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Booting Android from SD card
The device model is Samsung Galaxy Note 8.0 (GT-N5100)
It's not booted yet, had developer mode activated.
The flash memory is completely broken (which probably means the bootloader is gone as well?), and since a simple repair at a shop would cost more than 150 USD, I've decided to give it a last try by copying an Android system onto the SD card to make the device at least function again.
I think I will kind of figure out the last step by myself since I'm on Linux all the time, but I'm not quite sure how to change the boot order or whether it is possible at all.
Is it possible to create a "bootable SD card" to boot Android from on this device – and if so, how is this done?

Btw, while waiting, Google a little gives me Run any Android ROM from SD card amongst the first hits, as well as SD booting (both are for Rockchip devices, so they probably don't match your Sammy).

Yeah I was looking at the first link as well while waiting for a micro sd card reader. I will still try to force such an installation, I'll see how it turns out in the end.

I haven't inserted the SD card yet, but now that I think of this, isn't the condition of this phone very similar to a bricked device?

You will see when you boot (e.g. whether the RAM is broken as well). And you will have to take care for things like /data and /cache, of course.

It is possible on Galaxy S3, but that is the only device. See this thread: Sdcard Bootloader - Galaxy S3 on XDA You may be able to find more information on some of the later pages in that thread to see if your device will be remotely supported in the future.

I have been successfully able to boot from SD card on QMobile Z8 by:

Replicating eMMC partition table by partitioning SD card on a Ubuntu machine using parted and fdisk
Flashing factory firmware images to these newly created partitions using dd
Modifying fstab.qcom & init.tegra.rc files in kernel (boot.img) and recovery.fstab and uneventd.rc files in TWRP recovery to initiate mounting and booting from SDCard instead of internal memory

It was successful after some experiments. I think this method should be applicable to any device with similar configuration. However, files to be edited may vary from device to device.
If you want to put only apps' external data to SD card and not the whole partition, you can edit fstab in boot.img and storage list in framework-res.apk on Android 5 and older.
For more details: [HOW TO] BOOT FROM SD CARD [SUCCESSFULLY] on QMobile Z8 with BRICKED/DEAD eMMC


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New Nexus 7 Android 4.1.1 no Google Play Store
I currently possess a Nexus 7 Tablet running Android v4.1.1 with Kernel v 3.1.10-00001-g2cd7831 which was given to me as a Christmas gift. The packaging it came in looked new. It uses the standard browser that comes with the phone not google chrome (can't download because I don't have Google Play). After having done the following steps I am still unable to launch Google Play Store:
1) Tried to locate it in Settings->Apps->All and nothing was there.
2) Did a factory reset and checked again, nothing.
3) Downloaded the .apk for the latest version of the app from http://www.apkmirror.com/apk/google-inc/google-play-services/ and attempted to open, only to get a white window pop up and immediately close.  Crash.
4) The app is not disabled.
5) Cleared cache and data for the app and restarted tablet.
6) Re logged into my gmail account.
7) Settings->Apps->Reset App Preferences and still doesn't work.
I'm afraid I am all out of options I am aware of. If you can suggest any fixes please post!
Thanks ahead of time.

You need to download GApps (Google Apps) appropriate for your Android version. Play Store requires Play services and latter require files which doesn't come with its APK.

I seem to be having a difficult time downloading it from http://www.teamandroid.com/gapps/ on my pc and trying to transfer the files.  Is there a certain way I should try to do this?  When I try to download directly onto tablet it just says the download failed.

The download is working fine here. That said, I didn't completely download the file so can't say more. Try some another source.

I was able to queue a download and finish it but the end result says download failed.  I downloaded: CyanogenMod 10.0
Android 4.1.1 – 4.1.2 – Jelly Bean
HDPI / MDPI / TINY: gapps-jb-20121011-signed.zip – (Mirror #1)

Did you download through desktop or tablet?

I didn't download the whole file but I was able to successfully begin downloading, from PC. As I said, try another source (includes another website as well).

At the moment it is downloading from http://trueandroid.com/download-latest-gapps-or-google-apps/ but while it is what should be the size of the file I'm downloading?  I also found http://forums.androidcentral.com/google-nexus-7-tablet-2012/400381-just-picked-up-nexus-7-i-have-wifi-but-can-t-set-up.html which sounds like someone had a similar issue.  I'm checking to see if the tablet has been rooted.  I'll keep you posted.

Let us continue this discussion in chat.

I found someone with the exact same issue I was having here: Forum Android-Central and the solution starts at comment #9.  After going through the steps I have resolved this issue.  Thank you for your help!
Thanks to  RumoredNow on Android-Central for the following solution:

It's good that your bootloader is unlocked. That saves a step and
  means that you can flash images..
Get the NRT. Nexus Root Toolkit v1.8.3 | WugFresh
Once you have that installed it will ask what model you have. Select
  Nexus 7 (Wi-Fi Tablet) from the drop down. (Not the Nexus 7 v2.)
When you select the Android build you are running it should be
  NAKASI-GROUPER: Android 4.1.1 - Build JRO03S. That S is the only one
  authorized for 32 GB models.
Let the toolkit download any other files it needs.
Power on your device as normal.
Go to - Settings and scroll down to the bottom. Second entry from the
  bottom should be Developer Options. If not, you have to enable
  developer mode. Settings > About tablet - then find Build Number. Tap
  on that entry quickly 7 times to enable Developer mode.
Settings > Developer Options > USB Debugging needs to be checked.
Download this file:
  Factory Image 4.4.3 It is the latest
  Factory Image 4.4.3 for Nexus 7 2012 WiFi. Or pick another image from
  the repository. Google Factory Images for Nexus Devices I
  always thought 4.3 was a very solid release. Maybe research a bit on
  versions? Make sure you get an image for your model: nakasi - NOT
  nakasig
Plug the tablet into your computer's USB port. Let the computer set up
  drivers if it needs to.
Open Nexus Root Toolkit. Find the Flash Stock + Unroot button. Check
  the space for "Device is on/Normal" and click the Flash Stock button.
  A new window opens up, "Which Factory Image.". Select "I downloaded a
  factory image myself that I would like to use instead" and press the
  OK button. When the "Choose a Google Factory Image" window opens,
  navigate to the image you downloaded and select that. Click open.
  Follow the prompts and the Toolkit will do the rest. Your tablet will
  be completely stock at the Android version you selected except for the
  unlocked bootloader. I suggest you leave it unlocked in case you need
  to flash an image again, although the Toolkit will relock the
  bootloader with the OEM Lock button if you so desire.

source: Stack Exchange

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/3.0/

sort: votes


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Weird Video Found In My Phone
I have an old Samsung Galaxy Ace Duos (GT-S6802) running Android Gingerbread, it is a very laggy phone but I still use it to listen to Music. I got to the Gallery app (system app) and there was a video in a folder Titled: ap_video but when I go   to the video's details it says "Title: ad_video" and it's not a typo, the video is "ad_video" but the folder is "ap_video". In the video there is a woman Saying:

They say behind every succesful man there is a woman; Hi I'm Sarah Markel
  and I believe... you just found that woman, because I'm about to stay behind YOU, yes, yes and guide YOU; Until every last one of you is making that kind of money.
  Do it, do it now and I promise it will be the most important move you've ever done. (Then there is a black screen saying, "Please complete to the next step") END OF VIDEO.

But I really am a man and I don't have anything to do with business and money and stuff she is talking about in the video. I know some videos can go as an ad in a app. But the last app I installed was 'Retro Arch' which is uninstalled  and I didn't saw any ads in the app. There was not a long time since I opened my Gallery but last time I saw that folder "ap_video" and that video titled "ad_video".

Just delete it already. End of the story. We can't really know what apps did you try in that old phone of yours, how many of them might have placed files in the SD card and which one tried to be funny to place that video, at some point of their lifetime. It's not worth digging. And this is just my opinion.

It was most likely an add video from an app. I find weird videos and pictures on my phone all the time and then later find out they go to an app. If you delete it, you will be fine. If it was important (probably not) the google store will re-download it. I don't think you have any reason to get worried about a virus.
As a side note, Sarah Markel appeared in a video add for quickcash(you most likely have that add), which is some sort of scam.

Anything new and useful you're keeping? Please mention it because the info you've mentioned is something we know already: that the video was most likely placed as an ad. We also know we can consider deleting it. What's worth knowing is what created that file at first place.

The useful info was that if the video was somehow important, google play will redownload it and he will be fine. I also confirmed that it was an add in my edit by showing that quickcash used Sarah Markel in their adds. I also added that it is very unlikely to be connected to some sort of virus or problem with his phone and he has no need to worry about it.

There are no viruses for Android but other kind of malwares. Regardless of who is featured in the video, the existence of the video itself is suspicious to begin with if OP doesn't remember owning or transferring it into phone. If it is not a malware, then what other issue can it really cause? Tell me? I (as a user) expect technical details in an answer. No speculation, no opinions.

all_licenses: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/3.0/


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SD card not showing files when connected to pc
When my phone MOTOROLA G3(2015) is updated to Marshmallow, its not showing files when connected to PC. While connecting, it shows options as charing only, PTP, MTP, MIDI. When I select MTP, it shows the external card, but not showing the contents, where as internal memory is detected and all files are shown.

This is a well discussed and easy to fix bug... Disconnect USB cable, go to Settings, Apps, and Show System Apps and find External Storage and Media Storage and clear data and cache on each one and reboot, then give it 5 min after full boot up to rebuild media databases and connect to USB and select MTP. Should be good to go.
EDIT: In some instances where the SD card contains a large number of (media) files, it can take more than 5 minutes for the databases to rebuild. There is no way to see if the status of this database buildup in the phone itself, so sometimes you just have to be patient.
Also note that some users have stated that this is not sufficient by itself, but sometimes the system cache partition needs to be wiped and rebuilt. Official instructions for performing this operation from Moto are here. Note that this operation can take significant time... 5-15 minutes, occasionally even longer, do not interrupt the operation.

I convert the sd card (16GB) as an internal storage but now when I connect to computer, it only show internal storage (8GB). How can I copy thing to my "sd card" from computer?

@truongnm This comment is not directly in regards to this question or answer. If you have a different question, please ask it in a separate question including all relevant details. This is not a discussion forum.

I have done all this, still its showing only external card. When connected to ubuntu,  it shows external card and contents. Problem is with windows, i have installed the usb drivers, updated and troubleshooted it. Still nothing happens..

@SajinShereef If it's working in Ubuntu, you know the phone is working properly... I'm not sure I can help you too much with Windows, but it doesn't require special drivers to use MPT, they are inherent in the OS.

Ya phone is working properly. The problem is just with the windows I think, anyway thanks for the support

I had to reboot my phone 2 times after clearing data and cache to fix this issue.

Some people have noted that after this procedure, access is still not possible until the system cache partition is wiped and rebuilt. I will edit my answer accordingly.

I deleted cache and data for both "External Storage" ("Archivio esterno" in Italian) and "Media Storage" ("Archivio contenuti" in Italian) apps.
Turned off the phone.
Turned it on again.
Changed from USB recharge mode to MTP, then back to USB recharge mode, then back to MTP.
Still same problem, SD card content is not showing up... :(
UPDATE: after several minutes, content is finally showing up!!!!

Confirmed to be working on LG G3 6.0 containing 32GB SanDisk SD card filled with 17.85 GB of data, and waiting of 20 minutes right after rebooting.

This worked for me on my OnePlus One - with the MTP protocol. Will it ever be fixed?

After about 4 hours of installing drivers, wiping data & cache of apps, wiping cache partition, etc...
I found the solution was just to change USB option from 'MTP' to Charging while USB was connected to the computer, then while still connected, change the USB option back to MTP once more, voila!
Edit: How to find the USB options may vary between devices. On Samsung Galaxy devices, touch and drag the notification bar down, then tap "Connected as a <whatever-device-type-the-phone-is-currently-connected-as>".

Where is this setting, pray tell? :-/

After an update from motorola, it works..

Could you give some more details to help other visitors with the same problem? If you could [edit] your answer to give the build number that works for you, that would let people tell if updating should fix it for them.


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Installing APK file causes the screen to just flash and returns to previous page
I use Micromax Bolt Q324. The problem is that no apps get installed, its not getting into recovery mode or safe mode. I tried Factory Reset but it's also not working. When I open Apps for app info or try to install any APK file the screen just flashes and returns to previous page.Even it does not boots into recovery or safe mode.I HV used device just for 6 months.its has android KitKat is and its non rooted.it has still its original ROM and ram is about 512 mb.

When asking a question, provide related information such as Phone, Operation system version, (and even phone age)... What you describe sounds like damaged memory, or even faulty control application. Is the stock Google Play Store app being used or a custom one? Is the device over 4 years old (with intense usage?), is the device original? How long since a system format/cleanse?

I HV added extra information. Pks help me now.plsssssss

Can you confirm if your Android system was updated with the "OtA (Over the Air") network, and if so, can you confirm what programs werer updated along? Finally, as a precaution, disable "Network Data (GSM)", then connect your device with a Local trusted netowrk (WiFi), then uninstall the applications that are not behaving as expected, and use the browser to reach the Play.Google and request those aplications for new install. When completed, shutdown the device, count to 15, then start it again

Your google play library become unstable.. Please uninstall your google account and or reset the account may be helpful.
Or you can also try to update the google play service from play store , but please uninstall the previous one if that is already installed.


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How to enable Face Unlock on Samsung Note 3
For some reason, the Note 3 doesn't have the Face Unlock feature listed under Smart Lock (see screenshots below).

Click on image to enlarge
Do I have to download the APKs seperately?

Do you have Smart Lock (Google) enabled under Security --> Trusted Agents ? If so, try installing Trusted face apk

If installing apk mentioned above doesn't work try flashing SmartUnlock.zip in Custom recovery. (You may have to install a recovery first)


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stock data usage widget is displaying the wrong info
I'm running 5.1 and have the stock data monitor/usage widget on my homescreen.
My problem is that the quantity displayed on the widget is completely unrelated to (the correct) quantity displayed in the actual data usage portion of the settings menu.
Basically I have gone into a new billing cycle, the settings menu has acknowledged this and so displays 188Mb used whereas the widget displays 1.4Gb used. (For reference, so that you can rule it out, the WLAN usage is on a different schedule and is on 17Gb)
The problem also persists after removing then re placing the widget.
Any ideas?

Which Android device is it?

elephone trunk (!)

There isn't a stock data usage widget in AOSP. This is an OEM feature for your device. Maybe it does not sync your billing cycle info from your data settings and simply resets the usage on some specific day (probably the 1st) of a month.


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My Redmi 2 Prime's battery usage is inconsistent after OS reinstalls
Recently after I updated my phone to MIUI7 the battery increased from 9 hours internet browsing backup to 10 hours and 4 minutes for Internet Browsing backup. But after I tried to roll back the OS to MIUI 6 and few older ROMs of MIUI 7 and them wiped and reset the phone OS to the latest MIUI 7.1.1.0, I have lost some amount of battery and now it gives a Internet Browsing backup of about 8 hours. How can I fix this, has anything wrong happened to the phone because I formatted my phone too many times (at least 6 times as I remember). Please Help.

You should understand that battery usage can differ due to various other reasons too. Were you browsing the same websites and for the same amount of time? Also, Chrome (or whatever your browser is) may have been updated and some features may have been enabled/disabled which can affect battery regardless of flashes. This is totally unimportant. BTW, an online battery backup of 8 hours is considered very good battery backup. You need not worry at all.

Battery runtimes are based on information in the batterystats file, this file is wiped on a reinstall and it takes some time to for it "rebuild" information and come up with consistent battery run-times, especially in larger capacity batteries. There is typically considered to be a 2-3 full charge cycle delay (2-3 days for most people) before the times are considered roughly accurate.


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Menu Button for Android 5.0 / Lollipop
I recently upgraded from an Android 4.4/KitKat Samsung S4 to an Android 5.0/Lollipop Asus Zenfone 2. On my Android 4.4 device, there was a menu button on the bottom left. On my new Zenfone there is no menu button on the bottom of the phone or anywhere else on the device. ON the Zenfone, the return button is now on the bottom left and the Previous selections are on the bottom right.  There is a menu function on the Operating system of my phone to the upper right with 3 dots, but that is on the OS of the phone..  My question is where do I find the menu function to use within an app.  Many apps use a menu to do certain tasks. Please advise - thank you.

According Material design - Lollipop on wards, you have a button (3 dots you mentioned) called Action Overflow Button which replaces the menu-button function.

Any legacy apps not targeting ICS or higher will get a compatibility mode menu button on the bottom right of the navigation bar. If you don't have a navigation bar but have physical keys, I suspect a custom launcher like Nova can allow you to remap one of your keys to showing a menu on a long press or double tap, or even as the default.

try long pressing your recent app button

I just moved to the ZenFone2 from a moto razr as well. Not having a menu button is NOT going to happen. A bit of digging, and found the option to set the recent apps button to menu, on long press. :settings/device/asus customized settings/

Thor can you please be more explicit in your instructions? Thank you!

Try back button, press and hold a few seconds. It works on my phone Samsung.


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Serious bug in Android 4.4.4_r2: Not sending BOOT_COMPLETED Intent
There seems to be a serious bug in Android 4.4.4_r2:
BOOT_COMPLETED not always sent bug
Causing BOOT_COMPLETED Intent not to be sent. Does anyone know if this issue can be fixed on an Android 4.4.4_r2 device?

It seems to be more of a programmer problem since very few end users actually can look at that pile of text and understand something.

Yes it is, but the bug must affect very many end-users with programs not being launched properly on boot. So it seems strange that there are not numerous complaints about this bug.

As far as I can tell, the BOOT_COMPLETED will be sent when the device is successfully restart and the Keyguard is unlocked the first time. In order to be able to help, post the manufacturer, as well as the ROM name/version. This "bug" does not happen on a Motorola E, Samsung J1 or Sony E3 (devices I have for developing and testing), all runnning 4.4.2

I agree with Bonatti here. Might be the reason it is not so well-known be the fact that it is a case specific to you? And yeah can be a problem affecting end users however the odds that you'll receive proper information are significantly lower here.

I have multiple devices running 4.4.4, and not a single of them seems affected. So it might not be that wide-spread as you think. Apart from that, if it's a bug in the OS, plus considering this site is for end-users, we are not the ones to fix it. // @Bonatti strike the "Keyguard unlock" part, that is not involved AFAIK (makes no sense; the event must also fire with the device booting up in your pocket, or the SD card wouldn't be mounted in time and the launcher etc. not started ;)

OK. I just think it is really strange, since when I browse the source code, the buggy code seems to be present.


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Using a barcode Scanner via USB OTG on Samsung Tab S
I have a 10 Galaxy Tab S (Android 5.0.2) on which I am connecting a barcode scanner via USB OTG.
The problem is it does not read the barcodes (Line,2-D, QR ) accurately.  It missed out on some characters.
I have tried the same scanner with the same codes on a computer, a MI Phone & a Samsung Note -II Phone & it works there correctly.
Any Ideas ?

Try Google Goggles...

Most USB Barcode scanner guns also have a set of special barcodes you can print and then scan with the gun to set the baud rate (and other settings) of the scanner.  I would try changing that and see if the gun starts working right on that device.
From your message that it's the QD2400, the user manual is full of QR codes you can scan to change the settings of your scanner.  I suspect you just need to change the baud (as stated above), which is on page 30 of your user manual.
The user manual can be downloaded from this URL:
http://www.datalogic.com/eng/products/automatic-data-capture/general-duty-handheld-scanners/quickscan-i-qd2400-pd-612.html
The name of the PDF where I saw the QR codes for all the setting changes is:
820055914.pdf

It is quickscan qd2430 . https://www.barcodesinc.com/datalogic/part-qd2430-bkk1.htm

Thank you for your Answer. I tried every possible combination of BaudRate, StopBits, & Parity Bits. I Think it is a device issue coz I have 4 similar tabs & It does not work on any of them.


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Recover data on internal memory of a dead HTC One M8
I happen to drop my HTC One M8 due to which the screen got cracked and also made the phone stop working, doesn't start, doesn't charge, absolutely nothing, as good as paperweight.
I took the phone for repairing and they told me that, the phone needs following:-

Chipset rework to main board
Charging connector replacement
New LCD
Software flash - all personal data will be lost/erased

What I am more concerned about is the loss of data from the internal memory.
I would like to know if there is anyway that I can recover the data, I have some important files, text and WhatsApp messages(which were not backed-up before the drop)
One thing I came across is tools for recovering deleted files.
Is it possible that I get the phone repaired including software flash and then run one of these tools viz. H Data Recovery to recover my data?
I mean even with a software flash the data will still be in the memory and just the pointers will be removed, right? like it happens in simple disk format. I am assuming this, please correct my understanding.
If the above is possible, what should I ask the repair center to not do, so that there is still the possibility of data recovery?

Double-trouble. If the device cannot even be powered up, you can't access its internal storage to rescue your data. As soon as the software is flashed and the device reset, that data is gone – and without root powers, rescuing data from internal storage is close to impossible (so at least your WhatsApp data would be gone for good). There are very few tools which might help you on a non-rooted device (e.g. DiskDigger), but I wouldn't count on that.

I was hoping to have a different answer. but seems like lesson learned a very hard way

Afraid that's the case, yes. To have better options in the future, think of backups to your (external) SD card or your computer. Our backup tag-wiki should get you started; for non-rooted devices, especially look at ADB Backups and Helium.


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Twitter app does use my address book?
I would like to start using twitter on my smartphone but I do not want to share info with my contacts.
Does Twitter app for android suggest to my contacts to link to my accounts?

In 2012 it was reported Twitter did upload the address book to their servers. Something changed after that.
In case you're wondering if it has in the past you can visit https://twitter.com/settings/contacts_dashboard
If you are using Android 6.0 or higher you can disable the contact permissions as a extra precaution.
The Twitter app doesn't use your contacts unless you explicitly enable this in the settings of the app. Only way to identifies you with others that have is through your email (and mobile number)

If you add your phone number and synchronise it, then only it use your contacts and keep you updating whom you may know. Who is already on Twitter. Whom you can invite using phone number. Otherwise it doesn't use address book.

As mentioned in the twitter website's help centre,
Why is the Twitter app requesting permission to access features on my Android device?

When you install the Twitter for Android app on your device, you may
  be prompted to grant permission for the app to access information or
  use features from your device. Almost all apps need certain
  permissions to run on Android, and we use these permissions to run
  features in the Twitter for Android app. Keep in mind that Android
  controls the way the permissions are named, and the way they are named
  doesn’t necessarily reflect the way the Twitter app uses them.

And yes it is mentioned in the article and in you question, it reads you contacts for the purpose of friend suggestions,

If you choose to import contacts from your device to Twitter, this
  permission allows us to suggest friends to you in addition to
  suggesting you to friends on Twitter.


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Can't use ok google anymore
my problem here started about 2 months ago. i searched a lot for an answer before asking for help here. but didn't find anything.
i'm from Iran. i used to be able to use google now and its cards before. but after my phone's crash, i gave it back to the company i bought it from. they reinstalled the ROM and fixed it. after that, i couldn't use google services anymore and not even able to save offline map in google maps !
every time i try to use it, it says "This account is not eligible to use google now"
do you guys have any idea for fixing it ?!
i repeat, I was able to use it before.
my device: HTC ONE E8
Tnx a lot

It looks like the company has signed in on Android using another Google account different from yours. Follow the instructions here to add an account (so you enter the account you have always used on your phone) and switch it.

i've already logged into my own google accounts ( i have 2 accounts ). but it says the message i mentioned before.

i also have another android phone which is rooted. right now, i tried to log into my google account on it to make it work on the other device which is rooted. i did every step like others do (using market unlocker and etc.). but it didn't work on that one too. so the problem is way deeper than i estimated.


text:
how to trace a mobile when switched off using imei
how to tracre a mobile when switched off using imei.my phone is moto E.I can trace my mobile when it is switched on +location on + mobile date on . I can trace ,ring and even wipe my data also when these are all on.but the only problem is to trace my mobile when it is switched off.

A switched-off phone is, well, switched off. That means all its radio modules are off. That means that it is not connected to any external equipment. That means that you cannot track it.
BTW you also cannot track your phone if it's in flight mode (I mean here full flight mode with wi-fi switched off).


text:
How can a tabelt forget the SSID of a wifi network
We have a product that combines one Galaxy Tab 3 7"or Galaxy Tab 4 7" tablet, both wifi-only, with a Mikrotik RB951G-2hnd router. The Mikrotik has a hidden wifi network so we add it manually to the tablet. Most of the time it works great but for some reason, sometimes the tablet forgets the SSID of the hidden network.
According to our costumers, this happens when there's a power cut and the tablet looses its charge. After the power comes back, the tablet won't connect to our mikrotik device. When checking the WiFi connections on the device configuration the network won't even appear on the list.
This happens only sometimes in some tablets.
How can the device forget a manually entered SSID?

What is it that you finally want? An explanation or a remedy? Somebody from somewhere can popup and would say that it is a bug and that it is a bug because many people have reported the same problem and they would continue to cite [bug]  like a mantra - there goes the explanation. Would that be enough for you? If not, what would be enough?

@Firelord Thanks for answering. Even a kid could say it's a bug. That's just a statement. I would like an explanation and if possible a solution.


text:
Why did the panorama option disappear?
When I got my phone, I could take panorama pictures.
Then the option disappeared. What gives?
If I remember correctly, there was simply an option on this tool tray:

(click screenshot for larger variant)

On my S4 with Verizon's version of Lollipop, this option isn't in the settings menus; it's one of the entries under the "Mode" button on the actual viewfinder screen.

indeed! can't believe i missed it right under my nose! thanks.


text:
Helium - Installing backup manually
When I try restoring from a helium backup, it says restoring forever and does not complete, therefore I want to restore the backup manually by moving apk to their folders. The zip however only contains a backup.json file and a bunch of com.identifier.name.ab files with PNG for their icons. What is this ab extension? Can I restore manually? I did not encrypt the backup. I have root, if it is required.
Also note that I am using an unofficial build of cyanogenmod. My phone is an SM-G800F kminilte

The file with the .ab extension is what you need for that (AB = Android Backup). You can restore it manually from your PC using adb restore com.identifier.name.ab. Requirement for that is the ADB installed on your computer; details on that can be found via the adb tag-wiki – and if you don't want to install the entire Android SDK, take a special look at Is there a minimal installation of ADB?

Some notes from the comments moved up here:

No, neither twrp nor clockworkmod are restoring adb backups (at least not as of this writing). Both use nandroid for backups, which is a completely different concept using a completely different format.
TitaniumBackup can read both, ADB and Nandroid backups, and extract those parts from them you wish. I don't know if it can do a "full restore" from .ab backup files – but if those were single-app backups (like those created by Helium), I wouldn't be surprised.
Yes, of course adb restore restores the app data from .ab files. That's what it's for :)
caution, advertisement: For a batch backup of all your apps and data, as well as a batch restore, a device documentation, and more, take a look at my Adebar (Android DEvice Backup And Report). Works on Linux and reportedly on Windows with Cygwin.

is that unconventional for an ab file to be named like that(like the questioner named it and like you do in your answer)?  for a moment there I thought adb restore can restore individual apps, though I see it can't it only restores the whole ab file, though his ab file was just the one app.

.ab indeed is the default extension used by adb backup. And yes, adb restore always restores the complete backup, no picking – but with adb backup you can choose what should be inside. Take e.g. a look at my tool Adebar which makes use of that fact, a.o. creating scripts to backup all your apps each in its own backup file.


text:
ADB command to wipe data the phone?
I have 200 Russian Phones to flash with UK Firmware. Now when i flash the UK firmware through Odin, it works fine but Russian firmware is still on it, however it does become UK if i factory reset the phone after that.
Now my question is that if there is any way where I don't have to factory reset the device and it automatically does it after Odin flash. That way I will save a lot of time.
I have tried these things:

"adb --wipe_data", this doesn't work because I don't how to really send a command to Recovery.
Cygwin terminal to break down firmware file into 4 file (AP, MODEM, BOOTLOADER and CSC). this doesn't work either.

Any help will be great. Many thanks

You can try  this while the phones is on.
(You MUST have USB debugging enabled and authorized)
adb shell recovery --wipe_data

that is the problem, its time consuming. going into the phone and turning on USB debugging on each phone can take very long. its even longer than me doing factory reset manually. I need to come up with a way where somehow it automatically factory resets the phone or i can use some cmd magic. i hope this explains little bit more about my situation.

@Tarinder You can't use ADB without USB Debugging, and you asked for an ADB command.

The arguments which may be supplied in the recovery.command file:
 *   --send_intent=anystring - write the text out to recovery.intent
 *   --update_package=path - verify install an OTA package file
 *   --wipe_data - erase user data (and cache), then reboot
 *   --wipe_cache - wipe cache (but not user data), then reboot
 *   --set_encrypted_filesystem=on|off - enables / diasables encrypted fs

You can take a look at here also:
Wipe data/Factory reset through ADB

yes, this is custom recovery i believe. i have seen this post, it somehow put me in right direction but in order for me to use adb, i have to enable USB debugging, which takes even longer than doing manual factory reset.

Source: Factory Resettin an Android Device from a Computer

Step 7
  Turn on your Android phone and connect it to a USB port on your computer. Type “adb shell” and press “Enter.” When ADB connects to your device, type “--wipe_data” and press “Enter.” Your phone restarts in recovery mode and restores Android to factory settings.

But judging from your question the way you where doing the wipe command via adb was wrong.The way you where doing it was: "adb --wipe_data" where's you should try "adb shell" and then "--wipe_data"
A the list of arguments include:

The arguments which may be supplied in the recovery.command file: * --send_intent=anystring - write the text out to recovery.intent * --update_package=path - verify install an OTA package file * --wipe_data - erase user data (and cache), then reboot * --wipe_cache - wipe cache (but not user data), then reboot * --set_encrypted_filesystem=on|off - enables / diasables encrypted fs

Source:Wipe data/factory reset through adb

does it need to have USB debugging "on" from the phone? or can i do this in downloading mode?

'--wipe_data' is not a shell command.


text:
Disable Media Volume automatic reduction
I'm using a Nexus 5, it's using the stock ROM, it's unbranded, bought from the European Google Play store. I've only noticed this issue since upgrading to Marshmallow, but I didn't use the headphones much prior to that, so it may have been an issue then as well, I'm not sure.
Every few days, while I'm listening to music on my headphones, the phone reduces the volume down to around 30%. I have to unlock the phone, turn the volume up, then select okay when it comes up with a warning about turning the volume up.
It's got to be one of the most annoying "features" of the phone. I don't know why it does it, or how to override it. I read a post on the XDA forums where people said it was due to some European law, but there was some descent there.
I have a volume controller on my in-line cable, so I am more than capable of getting the volume right for myself. Can anyone tell me if it's possible to override this, so the volume setting stays at the level I dictate, not the level the phone thinks is safe?
I'm aware I can lock the volume with "Persist" or similar but I would rather have control, as sometimes I want to adjust the volume depending on song, background noise and what I'm focused on.

Bit related: Prevent music volume from being lowered when using turn-by-turn navigation

Thanks, but that link/answer isn't really useful to the context


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Play Store Downloading of Updates Stuck part way through download
I have a Samsung Galaxy S3 & I have 3 updates in the Play Store.  When I click on them they start to download but part way through between 40%-60% they will just stop downloading.  The phone looks like it is still trying to download but nothing is happening.  Started happening yesterday.
I have tried force stop, clear data and clear cache from the Google Play Store and Google's account manager.  Also, tried uninstalling Google Play Store.
I have also cleared the Cache from the Recovery start up (Up arrow, Home, Power button).
Nothing seems to work.
Phone works fine outside of unable to download from Play Store.
Checked system updates and ran Lookout for viruses and everything is fine.
Please help.
Thanks

Do you have root access? As that would make it easier. If you don't, then I discourage rooting only for the sake of this download, as it voids warranty and opens up security problems. Do you have a strong enough network? Try using a Wi-Fi and moving closer. Are there any interruptions like sleeping?

Do any of them update successfully if you don't choose Update all but individually update one of them?

Talked to Google and they said to try restore phone.  Did that for over 1.5 hours and phone said Shutting Down but nothing happened.  Called back Google and they suggested to call Samsung.  Called Samsung and they help me reset the phone via Power button, Home button & Up volume button.  Wiped out everything and started new.  Thanks for your help.  Phone seems to work now and able to download apps.


text:
To find Pebble by phone?
Assume you lost your Pebble watch in somewhere your room. You can find it by asking someone calling you but assume you cannot do it. You just have your Android phone.
Find My Pebble Application
I think the application does not work. You install the application. I appears under your Applications in your phone. The front-end of the application contains only Settings and Delete. Settings does not work. You cannot Find your application by the app. You have to each time install and uninstall the application to find your Pebble. I think this kind of logic stupid. I am using Pebble Classing with Samsung Galaxy S4 GT-i9506 Android 5.0.1 Lollipop. Similar problem of the application also recorded here

Agreed that not having to unload and load would improve the concept.

The front-end of the application is also buggy, crashing to open the Pebble-settings page too to get the view "Settings/Delete" in your phone.

How can you find your Pebble smartwatch with your Android phone?

I find the application Find Watch more stable than Find My Pebble.
It is also more popular in the community by ranking.

Download "Find my Pebble" from the applications store inside the Pebble app. It will do what you have asked by blinking the backlight and vibrating.

I updated the body of the question and reviewed the application. I think it is rather immature.


text:
Extract data from nandroid backup
As I am not using an official version of cyanogenmod, I cannot restore my Data partition, that I was forced to wipe. I did the backup with TWRP thus, it is in the nandroid form. However, when I try to restore the Data partition, CM does not boot. As a workaround, I could mount (or extract) data from the nandroid, and place it in the storage/emulated/0/ directory.
The TWRP backup consists of files named data.ext4.win000 to win003, with a data.info and a recovery.log.
I already tried extracting the backup with Titanium, but it needs the donator's version to do that.
If it is necessary, I do have root access. I am on OS X, and my phone is SM-G800F kminilte. Since ext4 is compatible with Debian, I can use that as I do own one too.

A very tedious workaround would be to revert to stock ROM, flash the Data backup, get data and reflash CMmod, but that is something I want to avoid to do at all circumstances, unless there is no other way to do.

There are several other apps to deal with Nandroid backups you might wish to take a look at.

Did you try the answers here: How to extract stock apk from TWRP backup?


text:
Is there a way to fine tune locale settings?
I have had this question for quite a long time and I hope that it can actually be done.
I live in Greece, but I mainly use my Android (Lollipop 5.0.2) mobile phone in English (US). The reason is that this is my personal preference. I feel a lot more comfortable having a UI in English.
The problem I have is that when using applications that operate based on locale settings (distance, decimal points, etc) everything is according to the US locale and that's normal.
But I live in Greece and would like, for example, Foursquare to display km instead of miles by default. Even though that's something you can change in settings, the decimal point in the Calculator app cannot be changed (US locale uses . for the decimal point and , for the thousands, while in Greek locale it is the other way around).
So, is there a way (not necessarily a user-friendly one) to fine tune these settings to match the Greek locale, while still using EN_US as the display language?
This does not answer my question. I would also be interested in manually editing the US locale, if necessary and possible.

I think it might work for you if you use the English language from a different country. Have you tried English, Britain (en_GB) ? Other options are:  English, Australia (en_AU) English,  Canada (en_CA) or  English, Singapore(en_SG) etc..

Unfortunately they all use . for the decimal point and , for the thousands separator.

Now I am trying to map the list to English locales with [https://en.wikipedia.org/wiki/Decimal_mark] Countries using decimal comma .So,
en_BE: "English (Belgium)" should work -- Can you give it a try?

en_NA: "English (Namibia)" is another such example.

I have looked for that too. Not all locales are included in system settings, though.I only get US, UK, Ireland, South Africa, New Zealand, Canada and Australia.

Yeah.. I just realized that too.

I haven't tried them but you could look for some apps to generate a custom locale in play store. https://play.google.com/store/apps/details?id=sightidea.com.setlocale seems promising.

In principle, no need to download any extra application to your cell phone to solve this problem. Try going to the region or language configuration and change from English from the United States to English from Europe, at least it worked for me like this.

You might be right, though for the OP's specific case, no European variants are available by default: "Not all locales are included in system settings, though. I only get US, UK, Ireland, South Africa, New Zealand, Canada and Australia."

all_licenses: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/


text:
Does the Google Drive scanner cache local copies on Android?
I looked around and couldn't find the cached images or PDFs. But that doesn't prove they don't exist.
Our specific need is for our scan to go straight into Drive, with no stops along the way that can be tracked later.  We have a regulatory imperative to save to a secure site and not leave anything on our phones (or tablets).
Interestingly, fidelity isn't that important, just that the scan has been saved in Drive and not locally.

SHORT VERSION: The Google Drive Scanner will, by default, leave cached versions of the PDF file it creates.  I still hope to find some setting that will turn off this caching.
LONG VERSION:  Here's how I figured it out.
I have a rooted droid (Note2) I used to do some testing.  It has BusyBox and a couple of good terminals installed. After getting into the root shell ('su'), and from the root position in the filesystem ('/') I ran the following command
find -iname *jpg -mmin -2

immediately after taking a pic with my camera.  It found the new pic just fine.  I then ran the same command after using the Google Drive Scanner.  Nothing showed up.  That's good.
I ran nearly the same command but changing the name:
find -iname *pdf -mmin -2

immediately after using the Google Drive Scanner.  The find command located PDF files cached in this location:
/data/data/com.google.android.app.docs/files/fileinternal/

Now I have to determine a way to manage those caches (this is all about HIPAA data for my company).
Hope this is helpful to someone.

For those who're not aware of -mmin argument: it takes number of minutes (N) and - means, find the files changed under last N minutes.

FYI:  I contacted Google support about this.  As of today, there are no options for disallowing cache or clearing cache remotely in Google Drive.  The only option, for now, is to teach your users to clear the cache regularly.


text:
Can I use my Android phone as a second monitor?
About ten years ago I started using dual monitors. It was amazing. But I switched to using a laptop exclusively and do not have a second monitor. It occurred to me that I have a second screen right next to me (my phone) that I'm not using.
Is it possible to use it as a second monitor? I can imagine using it to show a training video while I follow along on my laptop screen.
I have a Mac OSX 10.11 and a Samsung Galaxy 6. I have an older iPhone 4S as well.

Do you imagine or prioritize usage other than to show videos on the phone?

I've read an article on that quite a while ago, but don't remember the source. A quick check on "second screen" brought up Air Duet, which seems to do exactly what you're asking for. Maybe take a look? Btw: The OS on your PC/Laptop plays a role here (the app mentioned e.g. needs a Windows counterpart), so you might wish to [edit] your question and include that.

A phone is rather small.  Perhaps somewhat useful as a second monitor, but not so useful.  A nice-sized tablet (diagonally 10 inches or more) would make a better second monitor.

NoMachine and a 2nd X(org) session (I am on linux btw and that is what I would do)

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/


text:
Stream from PS3 to Android?
I am able to stream content from my Android device to the PS3 and watch it on the TV that's connected to the PS3.
What I want to do is stream the game play video from PS3 to my android device.
I have an Android stick I connect to my other TV and the stick allows to receive streams.
Any ideas?


text:
How do I check which apps are using wifi?
I'm using the red mi 2 and data transfer is taking place via wifi, problem is I don't know which app is using it. Is there a way to see wifi usage statistics?

Related http://android.stackexchange.com/questions/15066/how-to-monitor-wi-fi-usage

For even more detail, I recommend Trepn Profiler from the Play store. It's developed by Qualcomm and analyses CPU usage, Wifi and cellular data usage, and more.

Go to: Settings > Data usage – WIRELESS & NETWORKS

Tap the right-top menu. It will open up a popup menu.
Check *Show Wi-Fi usage.
Go to Data Usage. You'll realize a new tab called WIFI is added nexto to MOBILE.
There, you can see all apps that use WIFI and how much data they use.

Visual how-to (source: TeckFront; click images for larger variants)


text:
I need to access the internal sotorage
I was changing the ROM on my phone (Samsung Galaxy S5 SM G900P) when I deleted the OS. Now I know I can flash a new one by adding a zip file to the SD card or Internal storage.
The problem is that I can access either one of those since all i can go into is recovery and download which doesn't enable the usage of File transfers via USB. I need to know some way for me to get access to the storage, any help is welcomed.

Nothing enables the usage of files transfer via USB charger (unless you're talking about badUSB)!

Does your S5 have a custom recovery, so you can flash any ROM from there? Then you could use adb push (see adb tag-wiki) while booted into recovery. Alternatively, as it's a Samsung device, take a look at our odin and heimdall tag-wikis. AFAIK those tools can be used to flash ROMs with the device in download mode.

@Firelord you're an evil guy :) Don't recommend such "uploads" :)

In this you have one option of sideload in recovery. In this case you need custom recovery. If you don't have a custom recovery them you need to flash it using odin in download.
Now boot in recovery mode. Go to install > Install from sideload (in cwm) or advance > sideload (in twrp).
Now when you open it, open terminal / command prompt. Type command
adb sideload your_rom.zip
It may seem that nothing is happening. You must have to wait and don't touch usb until work is done. Any interruption may hard brick your device. Even though it is safe.

For this you must have required adb tools ( for this you can search ).

Please use quote tag (>) only when you're citing something from somewhere.


text:
Caterpillar s50 stuck at fastbood mode - bootimage is not signed
I need a little help here since i just started messing with android phones and i guess i messed up this one a lot. I rotted it fine and then i tried flashing a rom through flashify. When the phone restarted i am stuck at the CAT logo and on the top there are two lines of text with red fonts. Top line says fastboot mode, second line says bootimage is not signed.
I have downloaded fastboot and i am able to get some info out of it, so fastboot sees the phone, but when i am trying to flash a boot image or a recovery image on the phone i get the message remote: device not support flash command. The answer is equivalent when i am also trying to erase, boot, recover etc. it says device not support.
Is there any way i can get out of this mess? Really appreciate your help and feedback.
Best wishes guys and happy new year.

Are you able to boot in recovery?

Unfortunately not :/

Had the same problem flashing and trying to boot custom made boot.img.
I believe you ARE able to enter recovery (if you have not corrupted both boot recovery images, what is unlikely).
To enter recovery on Cat s50 you need to:

Power off the phone (in your case just hold the power button for several seconds).
Press and hold "volume down" + "camera" (the one between volume up/down) buttons. This is tricky by itself and not so easy from first attempt :)
Holding buttons from previous item you should insert the usb cable into powered usb port (controller or host os seems to be irrelevant, just need to have 5V).
Screen will show logo, but will not blink with our "bootimage is not signed" error. You may release the buttons and wait several seconds - it will show recovery menu.

Now. To restore /dev/block/mmcblk0p24 ("boot") nothing helps but factory update image. I had backed up this partition image before re-flashing - it did not helped - same error with one from back-up.
So:

You should download factory image, e.g. from this untrusted source :) https://mega.nz/#F!scdiVLgJ!K7BNoVUTNqaAELWQjsOUnA
There are 2 ways - via adb or sd card - both work fine. Lets describe adb. Go to recovery mode with phone connected to pc (linux in my case). You should select "update via adb" in recovery menu - it will wait till you provide image via adb.
From your pc you enter adb sideload /yourdownloadfolder/update-LTE_S0201121.0_S50_0.023.00-user.zip
Just wait for phone to validate it and restore images (it will say).
Reboot and all should be OK.

Google how to install adb if you don't have it already.
To update from sd card just copy that zip file into sd card root and select it with according recovery menu item. Someone recommend placing CID file (also available on link from "1"), but I did not - all OK.
Hope it will help, and if so - need to investigate further how to sign that damn bootimage. I want it to provide network file system support for this phone - all modules are ready and work just want it to be smooth from boot via custom bootimage.


text:
how to use supersu in cm12.1
Cyanogenmod has a built-in root access control in developer options.
But I can't use supersu instead of it.
If i install supersu and update the su binary. Then after reboot phone becomes unstable and many apps crashes.
If I flash update-supersu.zip from recovery the app gets installed in
 /system and built-in root access doesn't work and I can't remove supersu app, then I don't have any option but to reinstall Rom.
How to get it working?
Tnx for any help.

You can remove SuperSU app easily. SuperSU (by Chainfire) has the option for cleanup. Besides, if you've root access, you can remove pretty much anything, so why do you say you've to reinstall ROM?

I have root access available but when I try to switch from inbuilt access control to SuperSU by flashing from recovery I don't have root access and SuperSU won't even open. And I can't do anything because phone hangs a lot.

Are you using a stable CM build?

It's unofficial but very stable,
Only crashes in this case


text:
Can't flash anything from SD card
Not able to update the cm13 through the  recovery. whenever I try to update it gives the error message saying that can't mount the file or the file isn't found in the destination folder . Actually I have formated the SD card as internal storage and also I can access the SD card but can't flash anything in the recovery.

Formatting the SD card as internal storage probably caused this. I believe that when you format it in this way it formats it in a weird format but just a guess... Don't know how you would get around this issue without reformatting the SD or storing ZIPs on the Internal Storage. If anyone has a solution for this I would be happy to hear it!

Are you using TWRP? Have you updated to the last version? What phone are you using?


text:
Count roaming data
I am traveling to foreign country and I have activated data roaming. How can I track data usage in roaming? I want to know if I have used 10% or 50% or more of my data. One way is to write a note about mobile data consumption and then compare it manually. Is there a better way?
Thank you
I use nexus 5x with Android 6.

Related how to control monitor and limit bandwidth usage

Related: Is it possible to selectively limit background data usage?. You can move the vertical bars (second screenshot, where data usage is reported) to adjust to a given time frame, so no "manual calculation" is required.


text:
Why Samsung Galaxy Ace GT-S5830i shows only a battery icon instead of booting?
I've got a used Samsung Galaxy Ace GT-S5830i smartphone - it had basically no issues, but when I attempted to turn on (it was charged almost all night), what appeared is only a battery icon with no boot.
It has already happened some times before, but in those cases, taking out battery and putting back always solved the case.
This time, it didn't. What's the possible reason and how can I fix it?
(if that matters, the mini-USB end of the cable I use for the charger also has some issues, with only making proper contact in some certain positions)

Either your battery has failed (internal connection failure or shorted cell), or the battery contacts in the phone are no longer making contact with the battery terminals.  Most smart phones (including Samsung models, in my experience) will refuse to boot until the battery has a certain level of charge (around 15%); and if the battery won't accept a charge for some reason, the phone will never start up.
If you can, see if the phone will work with a different battery; if so, replacing the battery will solve the problem.  Otherwise, it may be possible to rebend the contact springs, clean the contact surfaces, or otherwise restore good contact to resolve the issue.

"Otherwise, it may be possible to rebend the contact springs, clean the contact surfaces, or otherwise restore good contact to resolve the issue." And how can I do that?

I don't know that model specifically, but in my S4 (and every other phone I've had the battery out of in the past few years) the phone's battery contacts are little spring leaves.  Carefully bending them so they press a little harder on the battery terminals is the general method; specific for that phone I can't help with.

Another way that worked for me, is to fold aluminum foil into a thin strip and wedge it between the bottom of battery and casing. This pushes the Battery upwards and forces connection

@beeshyams That's a good way to check if battery contact is the issue, and may be useful longer term if the contacts aren't accessible to adjust, but it carries a hazard of the foil strip getting loose when you have the battery out and, if you don't notice it before reinserting the battery, potentially shorting the battery (possibly leading to a fire or explosion).  At the least, I'd use something non-conductive, like a layer or two of masking tape on the non-terminal end of the battery.

You are right. I should have clarified. Aluminum foil I used was the food wrapping type, which has a butter paper surface on the other side, so that can be used..but yes as you pointed out, long term risk is still there..thanks

@ZeissIkon thanks! Strangely however, when I took out the battery, left separated for an hour or so, and then I put it back, the phone worked perfectly. Any ideas, why?

@ZoltánSchmidt That may be a safety feature in the phone's firmware: if it decides the connected battery is bad, the phone may refuse to enter a high-draw mode (like starting up the full OS) to prevent a battery fire.  I'm not certain that's the case, but if it is, leaving the battery out for an extended time is likely to reset it, and a bad connection at the terminals could cause the "bad battery" detection in the first place.


text:
Searching for an app to Send & Recieve recording audio in emergency situtations
I tried to complete this task, using tasker and automate but didn't sucess.
I didn't found a way to send the audio message, to the second android in realtime (like whatsapp, or pushbullet).
I want to make a task that record 5 seconds, and send it to another android.
I want it, for my wife, so he can send me emergency alert, if something happen, and she needs me.
The another android (my android), will play the file.
I want it to always work. If the receiver is in a middle of a call, it will hangup and play the sound fil
.
The question:

How to record 5 seconds?
How to send it?
How to play it on the receiver?

You dont need to give me full answer, any help, and ways to solve it will be appreciate.
If you also need it, or it intetesting you, please upvote :)
Thank's.

Some ready-to-use apps for this can be found in my app list: Personal Protection (Emergency Alerts).

Shows us your attempts made in Tasker and Automate.

The action Media -> Record Audio can start recording. Use Task -> Wait to wait for 5 seconds, then use Media -> Record Audio Stop to stop recording. The next step has alternatives. Phone -> Compose MMS can send MMS to an Android so you can send the recording as an MMS to your partner (I've never sent an MMS so I don't know about charges it may incur on you and receiving party). In your partner's mobile, setup a profile as Event -> Phone -> Received Text -> MMS (and other specific details). Use the action under Phone to end call and play a sound to let your partner know about the issue.

...this requires your partner to explicitly download the MMS (not bothered  to automate that). An another option is to run an FTP server somewhere, upload the file there, get the URL, send the URL as SMS, receive SMS, download media from URL, hangup the call if call is active and play the downloaded file. Sounds easy, right? You're better off with Izzy's advice in my opinion.

I tried many many things.
In the end... I success using sending simple MMS message.
Then I create a task, that on receive MMS, it will emulate touch events, for play the file (I run the messageing app, and click on the last message to play it)
http://www.pocketables.com/2013/07/how-to-emulate-touch-input-using-tasker-and-root.html


text:
Lenovo IdeaTab A2109 reflash?
I have a Lenovo IdeaTab A2109 I'm trying to get working.  When you power it on, it stays on the lenovo bootup logo.  I'm on a Mac, and I need to know how to reflash (or reinstall, or whatever the term is) Android to it so that it will (hopefully) be usable.
If you have other suggestions on how to get it working, I'm open to those as well.  Oh, and rooting instructions would be nice too (keep in mind I'm on a Mac).
So how do I reinstall Android on this thing?

I finally found an android image that worked.  Here's what I did:

Plug in tablet via USB
Open Terminal
Boot tablet in recovery mode
Scroll to 'Update from ADB'
In Terminal, run adb sideload [Path to zip file of image]
Let it run
All is well!

I found the link the the image on www.androidtablets.net.
Excerpt:

Stock 4.1.1 (A2109_A411_03_13_121127): https://docs.google.com/open?id=0BxNORR1JMMjZNTRIUlFlb2JBVTQ
  ACC89EE042C53BE7CC980DC4DAE6A3ED


text:
F-droid: keep partial downloads
I am trying to install OSMAnd~ which is 43 MB, but I am sitting on a crappy connection that cuts out after 10-20 MB. Can I somehow ask F-droid to keep the partially downloaded file and continue download?

You could visit their website, and download the APK using a browser/download-manager supporting resume.

I know that f-droid at least has a long timeout before cancelling the download but as @Izzy commented above, just download the apk from:
OSMand page
OSMAnd APK Version 2.8.2 (282) - Added on 2017-11-17


text:
CyanogenMod error signing school Google account on the Oneplus One
Phone: OnePlus One
OS: Cyanogen OS 12.1.1-YOG7DAS2K1
Andorid Version: 5.1.1
I recently purchased the Oneplus One used. I love everything about the phone and OS,  however I cannot seem to sign into my school's Google account (a large portion of the reason I bought the phone at all).  I searched XDA and here for an answer to this question and could not find an answer. !
I tried to log in as explained here but there is no 'sign-in through browser' option. I'm truly at a loss as for what to do.
I've also now tried the unlock captcha link (suggestion found here) and the method of importing a specific certificate found here on StackExchange (I am looking for the link again).
Please note, I have already talked to my IT department and they say that the account has mobile access and that there shouldn't be any problems.
edit After the update to Cyanogen OS 13 everything is gravy.

What error do you receive when you try to sign in to the account?

It states "Cannot Connect to sso.chemekta.edu" which is the authentication server.

Failure to Authenticate Images

Are you using two-step verification on your account?

Nope :[ It is off.

I'm not sure what to do. You could try resetting the phone I suppose but this will wipe all data and I suspect that this is a Google issue. In that case, maybe contact Google Support? Sorry I couldn't help further.

If nothing works I will try to factory reset and post the results of course.


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Nexus 5 (kitkat) does not boot into Bootloader mode - also cannot factory reset from ADM
I have an old Nexus 5 which I'm trying to use again because I dropped my current phone.
This Nexus 5 was on 5.0 (the one with the swirling circles right?) and it boots up but I can't get into it.
I am logged into my google account on it because I can see a few months worth of notifications pop up and can read emails sent to me on the lockscreen, but I have a pattern lock on it and cannot remember at all what the shape was.
After googling around, people said that after 5 retries you get the 30 second cooldown and there should be a "Forgot password?" button next to "Emergency call" but that isn't the case. I've got my pattern wrong about 80 times and still the button doesn't show up.
I found other people having the same exact problem and said Android Device Manager was the way to go. ADM sees my phone, I can do the remote calling it feature but if I choose the "Lock and Erase" button it says "request sent[...]" but nothing happens on my PC screen or my phone screen. What is this button supposed to do?
Anyway, so after not being able to get in that way I thought I'd just factory reset it from the bootloader mode, only I cannot get into the bootloader mode. Some websites say to hold Vol-Down + Power others say Vol-Down + Vol-Up + Power but neither of these combinations work for me, it always just boots straight to the white "Google" logo and then the swirling circles.
The phone is unlocked (little unlocked lock symbol under the white "Google" logo on start-up but I don't know if that makes any difference at this point?
I've tried connecting it to my PC and doing "adb devices" and "fastboot devices" but because I am either powered off or just on the lock screen, neither of these find a device.
Is there anyway I can reset my pattern password? Or failing that, just factory reset the phone?
(I tried looking here and elsewhere for the same question but either the person fixes it with ADM or by going into bootloader mode, neither of which I can do.)
Thanks for your time

Take a look at the locked-out tag and see if anything is relevant. Android 5.1 also has swirling circles for the boot animation but both are fairly similar in terms of this issue. Google did in fact remove the Forgot password option for Lollipop I believe. To reach the bootloader, press the Volume Down and Power keys when the device is off until a screen with an Android on his back appears.

You can then access recovery and factory reset the device if you need to. If doing this doesn't work, this issue could be tricky to fix. I'm not quite sure why ADM doesn't work.

@LJD200 Thanks for the link. Yeah vol-down + power does not work for some weird reason as I said in the post, it has worked for every other android phone I've had since the Droid and even worked for my 'newer' nexus 5 (which is the one I dropped and smashed) so I have no idea why it doesn't work for this one.
Is there any other way to factory reset? Even if it's like a button on the motherboard, I don't mind taking it apart, I've done so many times.
It just seems crazy that my google account is logged in, can be accessed by ADM etc. but because I can't remember my pattern that's it...

It's very odd that you can't access the bootloader. Is ADB enabled on your device?

It's been a very long time but yes I think so. I have the "unlocked lock" symbol below the white "Google" logo when it boots up.

That doesn't necessarily mean that your device has ADB enabled but it's worth a try. If you boot into Android and run adb reboot-bootloader on your computer with your Android device plugged in then hopefully it will boot into the bootloader and you can access recovery from there. Sorry about the long response time!

Hey no problem about the response time. I'm just assuming you're from the UK like I am! Thanks for continually trying to help. I'll give it a go now but weirdly my PC doesn't seem to think anything is connected when I connect it on the lock screen. No sound, nothing changes in device manager. The phone does start charging but it seems like there is no data connection, that's what it was doing yesterday at least, I'll try again now though anyway.

Thanks. Please report back when you have. I'm goint to move this discussion to chat so we don't fill up the comments!

Let us continue this discussion in chat.


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Phone doesn't charge via USB while on
I'm trying to figure out a charging issue with my Nexus 6 (Marshmallow 6.0.1).
While I'm in Windows (10) and the phone is on, it won't charge over USB. If I turn off the phone it charges via USB. If I'm in post or the BIOS of my computer the phone charges via USB while on.
I tried the same with a Nexus 5 and it charges while in Windows as expected.
The mobo is an Asus Z170-A. I didn't see any USB power option in the BIOS.
I've updated to the latest version

@beeshyams The 6P is Type C, this is the 6 it's just a micros USB port. I'm on Marshmallow 6.0.1.


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Why don't the capitalization voice commands work in the Google app?
The capitalization, quotation marks, and some punctuation marks don't work for me In the Google app.
Is there some additional software I should know about?
Thanks.

Did you try these related questions: What is the list of commands to dictate punctuation, capitalization and line breaks?, & When using “voice typing”, how can I capitalize a proper noun?


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Failed upgrade, now stuck in recovery mode(Myphone model:my27)
My phone is now stuck and when I turn it on, it says NO COMMAND/Error
it happen when i update my system, because it always updates. I leave my phone at my room but when I came back, my phone says Error and when I try to turn it on it wont work again, its stuck!
I tried to reset my phone but it wont reset it says that its done resetting but its still stuck.
Please someone help.

First, turn off the phone by using the Power button.
Press and hold Volume Up + Volume Down + Power key for some time.
When you see a menu with two options, remove your hand from buttons.
Afterwards, press the Volume Up to enter Android System Recovery.

 5. Select the "Wipe data / Factory reset" by using the Volume buttons and press the Menu Capacitive key for confirmation.

Then choose "Yes--delete all user data". Use Volume Down to scroll and Menu button to select.
Success your reset.
Here I provided more mobile hard reset solution.
Thanks......!!!!

And how does this address "it wont reset it says that its done resetting but its still stuck" (sic)?

You appear to be here for wrong reasons. See How to not be a spammer?


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opening files in mounted directory from within apps
I have successfully mounted a local network location on to /sdcard/routersd ; I can successfully browse within this mounted directory and do copy/delete operations. My purpose of creating that is for me to be able to browse and open my PDFs, office docs, and media files from within my Android apps such as Adobe Reader, QuickPic, WPS Office and etc.
The problem is that those apps cannot see files and directories available in that mounted directory! Alternatively, when I try to open /sdcard/routersd/for-example.pdf from within a file manager, then selecting Adobe Reader, Google Doc, WPS Office, etc. as the openner, I receive errors like "This file could not be accessed. Check the location or the network and try again.", "File cannot be opened", and "File no longer exists : File may be renamed, moved, cleared, or deleted by other programs." What is this error for? How can this aim be achieved (opening network files from within apps that originally can browse only local files)?

What is available (e.g., Samba, FTP, SSH, etc.) at the remote machine that you're mounting on your device using network? Show us what you've used to mount the remote directory as a local drive.

@Firelord , Unknowingly, the problem doesn't exist with regard to pictures but still continues with PDFs. the local network storage location is 192.168.0.1/sdcard (which is refering to sdcard in my portable router). I'm using this code for mounting : su -c 'busybox mount -t cifs //192.168.0.1/sdcard /sdcard/routersd -v -o user=admin,pass=xxxxxxxx'

How are the permissions set?

@Roh_mish , The permission for the directory and its files is drwxrwxrwx

You can find the answer to this questin here


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no system partition - lost adb connection while updating
I was updating my Nexus 10 tablet - had gotten to the system partition - when I lost the ADB connection. I've since learned that's a problem with newer Macs (I was connected to Windows through Parallels). Because of the lost connection, the system partition did not flash and my tablet is bricked. There is no operating system so it can't boot into Android, but it can boot into the Bootloader and Recovery mode. All the other partitions are fine.
I have a custom recovery (TWRP) and an unlocked bootloader, but I'm at a loss to figure out how to flash the system.img file. I can't boot to Android so I can't connect through ADB in Fastboot mode to flash the ordinary way. I am connected through ADB when I'm in Recovery mode, but I can't use the flash command in Recovery mode. Nor can I figure out a way to make TWRP flash the partition by running it as a zip file - mainly because I can't figure out what the update.zip file should consist of.
I tried pushing the system.img file to the Nexus 10 using the Linux dd command, but that doesn't work with the system partition, which uses a special format. The details are explained here, but I don't fully understand it:
http://www.modaco.com/forums/topic/327661-how-to-backup-the-systemimg-bootimg-and-recoveryimg/
I've spent hours and hours trying to figure this out, and I can't. I need help. I hope someone knowledgeable can give me some guidance. I posted in xda, but they ignored me (as usual).
Thanks in advance.

You use adb when there is an adb daemon (think it as a service) running in the device. When you're in fastboot mode, there is no adb daemon running in the device so using adb commands is out of the question. The fastboot mode explicitly uses fastboot protocol and you can interface with device using that protocol. fastboot tool does that. The command fastboot flash system system.img should help. If not, search how to flash Nexus 10 using fastboot? // Could it be that you were already using fastboot for flashing? I may have misinterpreted the question.

What is your source of system.img file?

I got the update (with system.img) from the Google site. The problem is fixed now - so much time wasted. First I wrote an update.zip file that formatted the system partition (to fix the corruption) & write out the files in system.img. That seemed to work, but my tablet would only boot to Recovery. I suspect the formatting - perhaps a boot flag was needed. In the end, I discovered that I was wrong about not being able to flash. AUGH!! I could have fixed this so easily. Once in Recovery, if I rebooted into the Bootloader, I was connected. I reflashed the system partition & all is well now.
On the plus side, I learned a lot (trying to see a silver lining from so much wasted time). I know how to write flash updates that run in Recovery mode, and I know a lot more about the features of TWRP. I think I could wake up any soft-bricked device at this point. :)

I cannot see the date of the post but I am replying in case if helps other.
Just install the ROM.zip from your custom recovery. It contains system.img, boot.img and more. But don't erase the fastboot.


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Xiaomi Redmi 2 Pro Battery Issues
I have a Redmi 2 Pro, and it works fine, except for some issues with the battery. If I charge it to 100% before I disconnect the charger and go to sleep, by the morning it may go down only to 98%, but if I leave it on around 70% for the night it can even shut down by the time i wake up. In every case I use CleanMaster to shut unnecessary apps down before I go to bed. The possible shutdown makes it completely unreliable when it comes to morning alarms.
One solution may be to leave it on charger for the whole night, but i heard  about it being damaging to the battery. Is it? What can i do?

Can you take a back up of your data and do factory reset to see if the problem continues? What ate all the battery related apps instated on your phone? Android version? Device , is it rooted?

Don't use cleanmaster and similar apps. They do more harm than good. Also, don't kill tasks manually until you absolutely need to (app is not responding)

Based on the information provided, it appears that the problem could be due to any of the following factors:

Weak/Dying Battery: Can be verified by changing the battery
System not going to deep sleep: Could be due to wakelocks letting the system alive either from apps or system like media server. Clean Master may say that it had killed apps, but it cannot kill apps completely , including background processes unless it has root capability and is designed to do so. Neither does it ask for root permissions nor does the app description claim it can kill background processes, so one cannot trust that it is really killing your apps

I would first suggest that you do a factory reset after taking a back up of your data. I am presuming your device is not rooted, so you can see this for taking a back up Full Backup of non-rooted devices. This solution does not cater for SMS, contacts/ calendar which can be done using CM backup
Instructions for doing a factory reset for your device here. If the problem persists after factory reset, then I would suggest you to change your battery.
I am hopeful that this should resolve the problem. Please revert with Irvine and edit your question with additional information sought in the comments section, which would come in useful if the problem is not resolved
Coming to your other question, leaving it on charger overnight is not recommended, since the Battery gets internally hot and stress caused by this reduces battery life as you can read  Find out how to prolong battery life by using correct charge methods.
. Related inputs for additional reading Should I charge phone overnight or let battery down to a minimum?
Edit
Are you on MUI 3.6.6.0? Asking since rapid battery drain seems to be a problem , unresolved till mid last year, as per reports here
In any case, your device has the facility to identify battery consumption separately for hardware and software (app wise) as shown in screen shot below taken from the same source. Can you study that to identify the culprit, in case of rapid drain? You can quickly weed out the battery hogging apps using this

I can say one thing based on my experince.. i have a samsung galaxy tab 3. I had these issue.. below 70% the battery has some kind of wierd problems. I was using some apps that claims to free memory etc like clean master, 360 security, battery saver etc. I dont know specifically what i used. But that was the reason. Android has inbuilt ram and battery management. These apps doesnt do anything but harms. They take huge space in memory and drains battery faster. Better delete such apps and check your battery..

It might be useful to read this latest (2018/11/26) Android Central blog report about "Clean Master" and its ad-click actions.


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How to get option as install zip from SD card in recovery mode?
In a recovery mode, there are many options, such as:

Apply update from SD card
Wipe data/factory reset
Wipe cache partition
Backup and restore

But I can't find to install zip from SD card for installing zip file.
How to get option as install zip from SD card in recovery mode?

Are you using stock recovery?

Recovery is of two types:
a. Stock recovery
b. Custom recovery
Stock recovery is the one that comes inbuilt in the phone (which you are using now)..
The "Apply Update" option in stock recovery is same as "Install Zip", except that you can install only official updates using stock recovery.
To install some other ROMs (OS) or for some other things like rooting (by flashing SuperSu or whatever), you have to first flash (install) a custom recovery.
The custom recovery can have the option you said: "Install Zip"

If you can't find the option to install zip from an SD card, then you're probably on your stock recovery which comes with your phone. Stock recoveries don't allow you to flash a zip file because the manufacturers don't want end-users to try it and end up with a soft-bricked phone.
You will have to install a custom recovery first. I recommend you install the latest version of TWRP recovery. To do this, search the procedure to install TWRP on your specific phone.

This answer could be improved by ascerting whether a TWRP build for the asker's device in fact exists and adding a link if it does. You could also add the recovery's installation procedure.


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Is there a way to enable the ringer/notification sounds only when using headphones?
Let me explain the scenario:
I always keep my phone in vibration mode (no ringer, no notification sounds, just the vibration), since I'm a forgetful person and I'd end up forgetting to turn the ringer off when I'm in a meeting or other occasions when it wouldn't be appropriate.
This works fine for my needs, except in one instance: when listening to music. When I listen to music I typically keep my phone in the pocket of my jacket and I end up missing all my notifications, since between the music and the fact I don't have the phone in my hand or on my desk I can't hear nor feel the vibration.
My question is: is there a way to turn the ringer/notification sound on when the headphones are connected, while keeping it off when they aren't?
I'm running rooted stock Marshmallow (6.0.1)

Just for the sake of completeness, what is your phone model? Nexus phones (or probably, AOSP ROM and some other phones) have separate volume settings when on normal mode/headphone plugged.

@AndrewT. I'm on a Nexus 4 (AOSP). But the separate settings you mentioned only apply to media volume and (maybe) bluetooth. I tested it and the ringer/notification volume stays the same, with ot without headphones plugged.

Deleted my answer, as the SoundAbout app was actually doing something else (rerouting all audio to headphones) than what I thought it was doing (unmuting on headphone insert).

I don't have Android Marshmallow but following apps can easily achieve the goal on Android Lollipop 5.1. Should not fail on your OS, I believe. Let me know the result in any case.
MacroDroid
When headphones are plugged:

Trigger: Headphones Insert/Remove → Headphones Inserted
Action: Volume Change → select Notification and Ringer, and configure the slider for the level of volume you want

When headphones are removed:

Trigger: Headphones Insert/Remove → Headphones Removed
Action: Volume Change → select Notification and Ringer, and keep the slider to 0

Automate
It seems to work too. Your flow should look like this:
(Click image to enlarge)

Relevant blocks:

Interface → Wired headset plugged?
Settings → Ringer mode set

The said flow would cause the ringer and notification volume to come back to the level you set them to, before switching the phone to vibration.
Atooma
It worked as well. However, it appears to not been updated since May 2015.
When headphones are connected:

IF: Headphone → Plugged
DO: Audio Manager → Set ringer volume → configure the slider
DO: Audio Manager → Notification volume → configure the slider

When headphones are removed:

IF: Headphone → Unplugged
DO: Silent mode → On → Vibrate: Yes

Droid Automation
It also worked well for me.
Instructions:

Profile: Headset plugged

Trigger: Headset state → Becomes plugged
Task: Sounds & Media → Volume: Ringtones → configure
Task: Sounds & Media → Volume: Notifications → configure

Profile: Headset unplugged

Trigger: Headset state → Becomes unplugged
Task: Sounds & Media → Volume: Ringtones → configure to zero

Ah, yes, doze mode. Thanks to LJD200 for mentioning it in their answer. In case MacroDroid fails because of Doze mode, try this answer as a remedy: Is there a way to exclude an app from Doze?

Other settings may affect if not implemented, not just doze. Suggesting OP to have a look at this answer for all settings and a quick start guide to MacroDroid, if you don't mind http://android.stackexchange.com/a/133394/131553

The only settings/issues that are relevant here from your answer are about task killers and the running Android's special battery optimization techniques. Accessibility and notification access settings has nothing to do with the triggers I proposed. But thanks. I would recommend OP to specifically look for the heading System Settings in your linked answer, if not concerned with quick guide since app already offers that. :)

Used MacroDroid, seems to work well. As for doze: doesn't plugging/unplugging the headphones actually generate an event that wakes up the device anyway? (not sure about this, just asking)

@Master_T, sorry, I can't really comment on how doze handles these things. A simple logic follows that plugging headset results in a broadcast android.intent.action.HEADSET_PLUG being issued. MacroDroid would've registered a receiver for that broadcast so that it can be notified immediately and the actions get executed per user's  configuration. What I don't know is whether Android, when doze is active, allows apps to be activated for such inconsequential broadcast.

Ensure Tasker is installed and enabled. I tested this with Tasker 4.8 on Android 6.0.1 Marshmallow. If you are using Tasker on Marshmallow, it will work more effectively if you disable battery optimisation under the Android Settings (although this may also drain the battery quicker). To do this, navigate to Battery -> Triple dot menu (in the upper-right hand corner) -> Battery optimisation. Then click on the drop-down menu and select All apps and scroll down to Tasker. Click on Tasker and press Don't optimise followed by Done.
To do this, open Tasker and create a new task. Name it whatever you like. Then add an action and navigate to Audio -> Ringer Volume. Drag the slider to 7 (this is the maximum volume and you can adjust this if you want). Do the same for Audio -> Notifcation Volume under the same task.
Now add a profile and navigate to State -> Hardware -> Headset Plugged. Don't change the default options here and navigate back. You will now be prompted to add a task. Select the task that you created earlier.
Once ensuring that the profile is enabled, exit Tasker and set your notifcation/ringer volume to vibrate.
That's it. The ringer and notification volumes should now change automatically when you plug and unplug your headphones.


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Whatsapp and changing SIM
In a while I will be changing operator and SIM card, but not number. I backed up contacts, SMSs, even call logs. But I have no idea how to back up Whatsapp conversations. Do I need to worry? In other words, when I do such a change, do I risk losing my Whatsapp chats or are they linked to the number, implying they will get transmitted to the new SIM with the same number? Or perhaps they are linked to the device, which will also stay unchanged?

The messages are linked to the devices (ie. they are stored there). Changing your SIM/number does not delete them. If you do not change your number you don not need to worry about anything, the messages will still be on your phone and WhatsApp will continue to work as normal.

No. If you are keeping the number, then you need not worry about your Whatsapp account.
To backup conversations, go to whatsapp settings -> Chat and Calls -> Chat Backups.
You can use Google Drive to backup to your Google account on Android devices.
Although you use your phone number as your account Id, the account is tied to device. You changing carrier has no effect on the account.

What if I changed phone and wanted to resrore from a backup?

Either move the Whatsapp folder to the root sdcard directory of you new phone or sign in from the same google account you used to back up to (in case of Google Drive backup). Allow Whatsapp access to your drive when asked during initialization.


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Installing USB driver for XIAOMI Android Studio
I read the Using Hardware Devices page that describes how to connect your device to Android Studio that allows you to install and run your apps on your device. But I have a Xiaomi RedMi 2, and the link that they provide that allows you to download the OEM USB Driver for my device is all in Chinese. How do I install the required driver?

Below is the google translation: hope it works for you.

[Abstract] to install the driver, is the beginning of our wire brush,
  brush machine process is a very important step, but also a lot of
  local friends easily qualify problem areas. Just use a USB cable can
  not be achieved mobile phone and computer information exchange, but
  also need to drive.
Click here to download the millet phone drivers:
  http://bigota.d.miui.com/tools/xiaomi_usb_driver.rar
Install the driver, is the beginning of our wire brush, brush machine
  process is a very important step, but also a lot of local friends
  easily qualify problem areas. Just use a USB cable can not be achieved
  mobile phone and computer information exchange, but also need to
  drive.
First of all, I do not recommend to install the phone drivers to use
  wizard-driven software or pea pods, millet has provided official
  drivers, in my opinion, this driver should be the most secure, but
  with other software to install, simply by hardware identification to
  select the drive, and the identification is correct or not can not be
  100% sure, this process is not artificially controlled, equivalent to
  drive right to choose to install a mindless software, I think it is
  not so reliable .
Driver installation is a wire brush and turn on USB debugging to
  operate the first step of the phone, very important, the situation is
  a lot of brush machine failures are caused by improper installation of
  the drive, I hope you pay attention to drive installation. I trust
  that, in the Device Manager under the windows of the hardware manager
  millet choose to install the official driver.
[Recognizes three modes] In the boot state, after off USB debugging
  connect the phone to a computer, mobile phone should be recognized as
  a portable device, and the USB debugging turned on, is recognized as
  androidphone and portable devices in fastboot mode is identified as
  fastbootinterface.
Under fastboot mode USB Debugging on mode USB Debugging OFF mode
[Specific installation steps] To turn on USB debugging mode, win7
  system installation drive, for example, the installation steps as
  follows:

USB debugging turned on the phone, connected to a computer, but right-click "Computer" (XP is "My Computer") → "Management" → Device
  Manager
Right "android" → "Update Driver Software" → "Browse my computer for driver"
millet phone to find driving compressed file, right -
  "pressure to the current folder", select millet phone drivers extract
  the folder "xiaomi_usb_driver", the next step
jumped a security warning, click "Install this driver software"
and then is done [Driver information] Driver installation, in fact, is
  to copy the driver files to the system folder, determine whether the
  driver is installed properly, you can view the information. Driver
  information fastboot mode Driver information open USB debugging mode.
  Close driver information USB debugging mode So far, my experience
  sharing driver installation is over, we want to help the old and new
  rice.
Click here to download the millet phone drivers:
  http://bigota.d.miui.com/tools/xiaomi_usb_driver.rar

Install Mi PC Suite instead, it will work.  It automatically installs the drivers.


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Default user after reboot in multi-user CM 12.1
I setup a new user on my tablet in order to use it as a wall tablet with some smart home informations und buttons.
Unfortunately after reboot the Owner is always the user who is started first. So I have to change to another user in order to run the information app after every reboot.
Is there a way to change the default user which the CM is starting by after reboot?

I found a solution which is ok for me. I execute the following line using Script Manager App on Boot. This switches the user to the one with ID=10.
am switch-user 10

User ID's can be found with this command:
pm list users

Both commands have to be run as root.


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Unknown Android devices in Google Play
In Google Play when I go to an app (e.g. Facebook) It says this app is compatible with all your devices (I have no Android devices currently) and shows 'No carrier GT-I9100' (Samsung Galaxy S II) and 'No carrier Samsung GT-N7000' (Samsung Galaxy Note) I have never touched one of these devices and they don't show up on my device history. How Can I remove them?
Please help!
Cheers,
Caleb

Welcome to the Android Enthusiasts! If you have no Android devices, I wonder a) what you're doing with Android apps and b) what makes this an Android question. IMHO it's rather something concerning the Google web site, and should rather be reported there.

There is no Google Contact form I'm aware of

Have you ever used an emulator or something similar?
If so, then these are those devices.
You can hide them (https://support.google.com/googleplay/answer/2407656), but it's very buggy
Otherwise you can log out of all devices at once by going to gmail on a computer, scrolling down and on the left side there is a link to your account activity, from that link you can log out of all devices
Make sure to change your password too, if you have no idea about these devices


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How can I view detailed information on a WiFi connection on an Android device?
Background / Purpose
I'm setting up a wireless network in which a Raspberry Pi works as the router & access point (following Adafruit's Guide). After getting it all set up, I tested the network by connecting my Samsung S6 to the new wireless network (having disabled mobile data, of course), and successfully accessed the internet (and double-checked by watching the RasPi's syslog).
I'm having trouble connecting other devices to the network, and I think it may be due to settings or parameters I'm using but known nothing about (pairwise (TKIP?), proto (WPA2?), etc.).
I'm not asking about those settings & such, I know that's a question for a different forum -- rather, I want to know if it's possible to get detailed information from Android about the WiFi network it's connected to. Perhaps through the developer/debug mode, or using an external tool or application connected to or installed on the Android device?

Maybe this can give you what you need: adb shell dumpsys wifi. You need [tag:adb] setup.

Try Network sygnal Info Pro (SSID, BSSID, MSC, speed, strength, cypher, freq, channel, etc)

Network Sygnal Info certainly provides a good amount of detailed information, and without having to root the phone. Since I ended up solving my original problem a different way, I can't say whether this would have given me exactly what I needed, but it is what I was looking for, so I'll consider it solved. Thanks for the help!

From most (all?) Android handsets you can dial *#*#4636#*#* which will display a wifi menu with lots of detailed information regarding the wireless status.

does not work on my Android 9 Samsung Galaxy S10

Just tested it on my razer phone running 9.0 and it worked fine

Just tested it on my Samsung A40 and it doesn't work, so it's somewhat manufacturer dependent. This is definitely samsung removing a feature though so you should be able to assume that any android handset should be able to access this menu.


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Google Now doesn't listen for answers
I sometimes have an issue where I launch a command using a Google Now, and it asks for follow-up info (for instance, "What's the message?" when my command was "Send a message to xxx"), but it doesn't start listening for an answer. I can still click on the blank field on the screen and type in my answer, but it kind of defeats the point of voice commands.
Note that it's not systematic: sometimes, the voice recognition will indeed turn on and I will be able to speak my answer.
Is this a known problem, and if so, is there a way to fix it?

Probably clarity of voice, consistent vocal speed, careful modulation, reduction of inflection or accented speech. All techniques to reduce vocal input confusion.

Read again. The problem isn't that it doesn't recognize my voice. The problem is that the listening mechanism doesn't turn on at all.

Possibly I'm wrong, and I'm willing to admit it. I'm suggesting that the failure for the voice recognition to process your vocal commands is because of uncertainty that the command is properly issued, or ended, because of my suggestions earlier. I think you need to evaluate the group where the failure occurs is: 1. If name(s) matching is uncertain or  inconclusive, 2. Pronunciation is unclear, 3. Inflection makes the voice recognition believe the request is incomplete. Programmed systems don't behave differently, but people employing them do. Evaluate effectively.