问:
How do I figure out what is using up all my data?
I typically only use between 1GB and 2GB per month of data. However, this month I was notified that I had exceeded my 4GB limit. I increased the limit to 7GB and within 4 days that was exceeded. I've now shut off all cellular data. When I look in Settings > Data Usage > Cellular Data Usage it shows 7.25GB of data used by Android OS. If I tap on Android OS it lists a bunch of apps like com.qti.service.colorservice and com.quicinc.cne.CNEService.CNEServiceApp. I don't know if this list is sorted by which service/app used the most data and there's no more detail I can attain by tapping on the apps listed under Android OS.

Since I have dates and times for some of the largest downloads (868MB on March 27, 12:57AM for example), is there somewhere in the file system where I can see a list of IP addresses connected to and their timestamps to perhaps narrow down who/what is sucking up all my data?

Is there a more thorough way of wiping the phone than a factory reset?

Anybody seen this before and have any suggestions?


问:
How to edit /sys/ files properly without root?
I have android device with version 5.1.1 . The device is not rooted, but root can be accessed on /system or /data partition files from the custom TWRP recovery using adb.

The device has SELINUX enabled and is set to Enforcing (getenforce shows enforcing).

I have rooted this device by flashing SuperSU previously, but currently the device is not rooted and Im not willing to root it, TWRP still present.

My phone's minimum brightness is a way too much that it hurts during night. By editing the /sys/ file, i want to achieve the low brightness.

Specifically, I want to edit the file

/sys/class/leds/lcd-backlight/brightness

which takes legal values from 1 - 255. But my phone will set this file's minimum value to 10 and not less than that. When I previously rooted this device and echoed 1 to this file, the brightness is comfortably low.

So, I want to achieve this without root.

Normally, this file is owned by system:system with permissions rw-r-r . The directory containing this file is owned by root:root with permissions rwxr-xr-x .

Im ok with unpacking, editing, and repacking boot.img files.

Actually, I did unpack the boot.img and edited the init.rc file to make the file permissions to rw-rw-rw and directory permissions to rwxrwxrwx . But still, I wasn't able to echo any value to this file. I tried both from adb shell and terminal app. The error I'm getting is "Permission Denied".

What am I doing wrong? How to properly edit this file without root?

ContentLicense: CC BY-SA 3.0


问:
Galaxy s5 broken screen use
My screen is broken but I heard that you can use it by hooking up to a tv (mhl)? Is it true,and could I use an ihome keyboard?</p>

Title: Galaxy s5 broken screen use


问:
Why does my Android device unlocks to a non-responsive black screen?
Device : Nexus 5, running a freshly installed Paranoid Android 6.0.3 ROM. Device is empty except for some system and a few Google apps.

Here is the loop I'm stuck in:

Pressing power button brings me to the lock screen which is just a swipe. Click sound is heard.

Doing nothing keeps me at the lock screen. Swiping up to unlock
immediately turns the screen black. Screen is unresponsive.

Pressing the power button again does nothing, except the click sound is heard again.

Back to step 1. Unable to enter into the phone.

This behavior is generally observed after like half an hour of phone usage, when phone gets heated even just a little bit. Phone behavior returns to normal in like 1-3 hours if left untouched.

Note : I was running Paranoid Android 4.6 since 3 years and this behavior started about a week ago. I installed the version 6.0.3 about a day ago to see if the update would solve the problem but it didn't.
I even gave my phone for repair. I was told the power button on the chip has been replaced. But that didn't solve the problem so I gave it back. This time I was told sensor problem was there but here we are again.


问:
Nexus 5 boot loop after depleted battery shutdown
Yesterday my phone turned off after the battery had depleted and now, after charging it, both the OS and TWRP are stuck when trying to boot (on boot animation and TWRP boot image respectively).

I'm currently using an Android 6.0 stock image, and have been doing so since at least a year and a half.

I haven't flashed/changed anything since the last time I flashed the stock image.

The phone has turned off due to battery depletion before without any issues afterwards.

I did noticed that battery was depleting faster than usual, I was sharing my 4G internet via tethering for a while, but I turned it off (and checked that it was off when I noticed the battery level) so that's why I thought it was weird.

I can boot into the bootloader.

Flashing a new ROM would be less than ideal, so I would really appreciate any ideas/suggestions that can avoid it -- not that I'm wouldn't consider that solution, but I'd rather leave that as a last option.

Cheers!

EDIT:

Since I can access the bootloader I thought to try and flash a new Recovery. The recovery that is currently stuck trying to boot is twrp-3.0.2-0-hammerhead, through using fastboot flash recovery cmd I tried to flash a new image twrp-3.1.0-0-hammerhead (notice I'm upgrading v3.0.2 to v3.1.0) now although the recovery still shows the old boot image for v3.0.2 and takes a couple of minutes to boot, the system log shows this errors:

Failed to mount '/cache' (invalid argument)

Failed to mount '/persist' (invalid argument)

Unable to mount storage

I followed this steps to flash: phone off, boot into bootloader, flash, reboot bootloader, reboot into recovery.


问:
Why does my Motorola G4 loose its mobile data connectivity while showing 'Suspended' next to the carrier name?
Suddenly since yesterday, whenever I activate mobile data on my Moto G 4+, it says suspended below the carrier name:

Hence I don't have access. This happens only most of the time, sometimes it actually works.

Rebooting sometime fixes the issue, sometimes it doesn't.


问:
HOWTO: Convert android phone into headless linux machine
I am looking for a way to convert my old android smartphones into headless 'over the network' linux devices.
What I am looking for is, I should be able to

SSH onto the device

Use linux command-line (BASH preferably), once I have SSHed onto the device

Run programs on the device (let us say java microserices to begin with)

Why do I want to do this?

Because I have 2-3 old android smartphones lying around. I could leverage their hardware instead of buying a new laptop.

Because I am curious about it.

Any help is much appreciated.

Thanks.


问:
How to delete this trash can icon Android 6.0
I have an Elephone P9000 and it has this annoying icon at the bottom that makes the most recent app disappear almost. How can I go and delete it? I have root.</p>

OwnerDisplayName: Tony Corin


问:
How to use PC data on phone via USB cord?
One can use the mobile data from a PC using the USB tethering feature.

Is there any way to do the opposite, that is use the PC data from mobile, using USB cord or any other cord or app?

My phone is Samsung Galaxy On7 with Android 6.0 Marshmallow. Phone is not rooted.


问:
Recover photos safely
A friend had about 60 photos that were very important to her, because she is planning to use them in a lawsuit.

She wanted to upload the photos to Google Drive and then delete them from the phone, but apparently she deleted them before the upload was finished (only 3 photos were uploaded).

Is there a safe way to recover the deleted photos? From what I can read on the internet, there are apps such as DiskDigger that will help recover deleted files, but I am worried about something: if I start doing stuff on the phone which involves moving things in memory like installing new apps, am I not taking the risk that the photos will be "hard-erased"?

What should I do? Thank you for your advice.

Details:

Phone is a Samsung with Android 4.42

Application used to take/handle photos is Camera (Google Photos not installed)

Memory used is internal memory. There is 142Mb free space available right now.

Title: Recover photos safely


问:
TWRP system backup larger than system partition
I made a nandroid backup with TWRP 3.0.2 on Sony Xperia M4 Aqua. When I tried to restore it, TWRP reported error 255 while restoring system partition. Upon closer examination, I realized that the size of backup is actually larger than available space on system partition. Available space after formatting is 2432MB, while backup size is 2483MB - 51MB larger.

As I understand, nandroid backup is actually a TAR archive of all files in a single partition, so I can't imagine a scenario under which this is possible. Partitions certainly weren't resized in the mean time. And I am certain the partition wasn't even close to full, because I already uninstalled many system apps using Link2SD. TWRP bug comes to mind, but while parsing the backup archive, I can't spot anything that doesn't belong there. Any ideas how this could happen? Could this be something Sony-specific?

EDIT: If someone finds themselves in similar situation, I found a workaround. I located some non-essential files inside the archive and deleted them using IZArc utility in Windows.  I then copied the archive back to phone and this time restore went through. The mystery still remains, how could TAR create an archive larger than the original.


问:
What all these partitions are for?
On my Lenovo K3 Note, apart from Boot (16MB), System (2169MB), Data (5584MB) and Cache (0MB);
I can see many more partitions (in TWRP) like:

Logo (8MB)

Nvram (5MB)

Recovery (16MB)

Uboot (0MB)

Proinfo (3MB)

Protect (0MB)

Parametr (0MB)

Secro (6MB)

Tee (10MB)

Frp (8MB)

I'm referring to this article: http://www.cyanogenmods.org/forums/topic/take-nandroid-backup-twrp-recovery/

Which talks about PDS partition that's supposed to keep your IMEI, modem information and all which does not affected as part of a custom ROM flashing.

Looking at the list of partitions on my phone, I don't see PDS. So:

Where does it store IMEI and other such details?

If I flash a custom ROM (Lineage OS 14.1 @ https://androidfilehost.com/?w=files&flid=133902&sort_by=date&sort_dir=DESC) will it be able to access IMEI and other details?

What all these (above mentioned) partitions do?

Is there a way I can remove any of them (that are not needed - if any, which ones) and merge it into data partition?

Note: I've checked following questions, but couldn't really get any clarity regarding my questions.

Lenovo Tab 2 Partition Layout

How to list all major partitions with their labels?

What are the Android system default partitions

What Android parts do these terms describe?

Title: What all these partitions are for?


问:
How to force Android>Mail Client to use custom SMTP Server?
I setup the default android Mail client to fetch emails from my gmail account (pop.gmail.com) and in the outgoing SMTP , used my own custom mail server mail.mydomain.com

While I can download the gmail emails nicely, sending out emails still go through the gmail account (pop) :(  and thus is still using gmail smtp servers (and showing up as @GMAIL.com email account on my recipients inboxes)

even when sending emails, if i try to drop down and my email account, the smtp account i have setup is not showing.

I double checked my SMTP settings and it's accurate.

Is this a mail client bug?

OwnerDisplayName: BrownChiLD


问:
Exploring device Logs
If an android phone was off and/or the user couldn't login using the password provided, is it likely that this information is recorded in an log ?

Equally if a signal loss occurred would that be logged ?

And where or how can I access logs ?

Title: Exploring device Logs


问:
Changing file permissions in SD card with my phone
I have arch linux on a SD card and I need to change a configuration file. I can only do it with my phone (Android 6.0 cyanogenmod based). Problem is that the file manager (I'm using cyanogenmod default file manager but I tried ES file manager too) tells me I don't have permission to do it even having my phone rooted and having granted it superuser powers. I suspect it's an SD card thing, maybe it's Android that respects the fact that the file is a system file which was created in another environment. What can I try to do? I chose to post here instead on android network because I thought the permission thing was more relevant to this section</p>

OwnerDisplayName: Warrior


问:
Bootloader questions
I'm trying to learn about the android's bootloader.

However, I got into some questions :

There are the SECURE BOOT and LOCK STATE. The LOCK STATE (if enabled) makes all partitions to read-only mode (right?). So what is SECURE BOOT? Is it possible to disable it it?

Is it possible to boot (not flash) an unsigned image and pass kernel options using fastboot, while the bootloader is locked? By kernel options I mean override the boot state to green.

Is it possible to boot a temporary image on locked not-rooted stock device using fastboot?

Thanks for all the helpers!

Title: Bootloader questions


问:
Youtube video shut down automatically
Im using wifi internet on android mobile. Watching youtube video after few 3-5 minutes the video shutdown and it comes on the main screen of the mobile. Whats the problem how to solve it. Any suggestion. Thanks</p>

Title: Youtube video shut down automatically


问:
Battery misinformation
I have a Droid Turbo (called Moto Maxx here in Brazil) which started to show a strange behavior. With normal use, its battery decreases til 53% percent, and the phone power off suddenly.

When the phone is still with 54% of battery, the battery widgets indicates a 3.4V and looking at the battery statistics on the settings, the sum of the power consumption since the last full recharge is very close to the 3900mAh.

It looks the battery actually is doing ok, but the system isn´t calculating the battery charge correctly.

I´ve tried some tutorials where I have to leave the battery drain off completely, and so, do a full recharge, and a full discharge, but the problem persists. So, how could I effectively 'reset' this battery statistics?

Title: Battery misinformation


问:
Reboot encrypted phone without having to enter password and PIN after crash
Last week my phone crashed when using Amaze File Manager. This Xperia Z1 Compact phone with Android 5.1 is encrypted. It rebooted automatically. I see the encryption lock and expect a password request. Then I see the normal lock screen. After a while I see that the network is up without having to enter the PIN to unlock the SIM card. Only one device manager is active, F-Secure Antivirus. Normal restarts require me to enter both the encryption code and PIN.

Phone crashes

Reboots without having to enter encryption code

SIM is unlocked automatically

No device manager is active that should do this

How can this happen? Shouldn't a crash result in a compleet restart? Can you explain this?


问:
Custom ROM and 4g/ LTE error.
I installed Noble ROM in my SM J200G. After installing it, I was not unable to connect to LTE which I was before. My stock rom, when rooted, used to connect to LTE without any error. My carrier is Airtel (India). What should I do to connect to LTE? I have correct internet pack which allows 4g/3g.

In my phone settings, the data mode it LTE/WCDMA auto mode.

Title: Custom ROM and 4g/ LTE error.


问:
Need a good app for writing Android applications on phone itself
I am a beginner in Android programming,  and have started very recently. I mainly used to work on my computer (loaded with android SDK and versions 4.0 to 6.0 and having android studio and Eclipse IDE).

But, currently, for a long time, it is not possible for me to sit at my computer. Is there any good app where I can write, compile and run applications on phone itself?

I have a Samsung Galaxy On7 with Android 6.0 Marshmallow.

Update: please suggest anything but the AIDE IDE available in Google play store.


问:
"Sign in to WI-FI network" & "500 Internal Server Error"
Problem is that this occured to my phone, I could not access the internet with my phone but it is fine with other devices. So I am quite sure that it is not the router. It's so weird because awhile ago it was working then after a few minutes after reluctantly trying to forget the network and put the password again and again. There it was  " Sign in to WI-FI network". Then i pressed it and loads. 500 Internal Server appeared. I've tried changing the ip setting, but it still led me to the Internal Server problem. I've tried everthing on the internet but I'm still hopeless.</p>


问:
Fonts on tablet looks a bit blurry
This is hard to explain in a technical manner as I do not know the proper terms, but it has something to do with cleartype / font anti alising.

The font in my phone looks so much better than on my tablet. I tried to screenshot it (on my tablet) but it looks fine when the screenshot is sent to a different device (my phone). I guess the issue is only on the tablet rendering. Anyone have ideas on this?

Title: Fonts on tablet looks a bit blurry


问:
How can I remotely unlock my phone with a non-working display?
I have a Samsung S5, model SAMSUNG-SM-G900A. My screen was already fairly damaged and I could not get a replacement yet, and today my phone fell and the screen is now completely black (although the touch keys at the bottom still light up when I press the power button on the side).

I thought I could maybe perform screen mirroring using Vysor to at least temporarily have access to my data (authenticators etc.), but unfortunately this requires the phone to be unlocked first.

I took a look at Google's Android Device Manager (where my device was already registered), but did not find an "unlock" option - only lock, ring and erase.

Do I have any options?

To reiterate:

The device itself is working, the screen is not.

I wish to perform screen mirroring (e.g. on my laptop) using Vysor or something similar.

I cannot do the above due to the phone being locked.

I only need the mirroring to be able to input my pass on my laptop.

Is there any way to accomplish this?


问:
Disable Gmail tablet view on browser?
Here's how the layout of gmail.com in Chrome looks on a tablet:

(note this is an old pic I just Googled but layout is simlar)

How can I disable this so that it doesn't show subjects and messages side by side? I want it to be like mobile phone view where the whole screen only shows subjects or message at a time (not side by side).

Title: Disable Gmail tablet view on browser?


问:
adb shows different battery capacity
My device is Coolpad Note 3 and it's 15 months old.

Recently, I've observed that the battery suddenly drops randomly to 20-30% and shuts down. When I plug it in for charging while it's powered off it shows that it's charging from 20-30%. If there is some charge left inside it then why won't it turn on?

And while charging it suddenly bumps up from 40-50% to 70-80%. Why does this happen? I don't think that the battery is failing because it's relatively new compared to my 2½ year old Redmi 1S (which is working perfectly).

Interestingly, adb shell dumpsys batterystats | grep "Capacity:" shows that my battery capacity is 1000 while the manufacturer mentioned that it is 3000 mah. I was getting nearly 5 hours of screen on time before this happened. Did the manufacturer do something to the device by giving some update ? Recently many other users reported such battery drain issues. Malwarebytes scan shows that the themes and ota updater apps have coolreaper malware which can be used to directly install any apps.

Here's the complete output:

```<code>$ adb shell dumpsys batterystats | grep "Capacity:"
    Capacity: 1000, Computed drain: 0.1000, actual drain: 0.00000000
    Capacity: 1000, Computed drain: 0.1000, actual drain: 0.00000000
</code>```

Edit:

I got the battery replaced from the service centre and it's working properly but adb is still showing the battery capacity as 1000 only.

Title: adb shows different battery capacity


问:
Samsung A9 Pro - an error has occurred while updating the device software
I just purchased this phone from ebay and when I turned it on I get the following error:

an error has occurred while updating the device software

Anybody know what's wrong with this phone?

Thanks.


问:
Sound Recorder not playing back
After recording several hours of music on my ZTE android phone , using the phone's mic placed next to a radio and utilizing the 'Sound Recorder' App , I tried to play it back later that day and got the error message "Unable to access storage space".
  I was using an SD card as storage so I switched to Phone Storage and got the same message.  Tried again using phone storage and was able to play back my recording.
  Seems to be an intermittent problem but I can't be sure.  I've done this before and never had this problem.  I hope this enough info because that pretty much explains the issue.  If there's anything else that's needed , please let me know.

  Thanks in advance for your help.

```<code> Mike
</code>```

Title: Sound Recorder not playing back


问:
App breaks after resigning apk?
For fun and giggles, i got the latest musical.ly apk, i then used this ( https://stackoverflow.com/questions/3267216/can-i-resign-an-apk-with-a-different-certificate-than-what-it-came-with ) to delete the META-INF folder.

Then i ran zip aaligner on it and signed it with apksigner and used the debug.keystore.

used adb install to install it on my emulator.

the app runs, but trying to login gives a "Network" error, even if i did not change ANYTHING in the code.

Is there something i'm missing? i'm totally new to this

Title: App breaks after resigning apk?


问:
I Need help installing android 6.0 marshmellow on a lg gpad f v495 tablet?
I did try the automatic way by going under settings, about device, and clicking the update device button, but I received a message that the tablet is currently up to date, even though it's android 5, and has not updated since Oct 28 2015. I could not find a actual apk to just download to install myself and I can't find any help other than geek squad that said the would do it for $40.00, but that is out of the question since I have to update 3 of these tablets, any help would be great.</p>


问:
Problems connecting Huion H420 Drawing tablet to android tablet
I had bought a USB-OTG cable for the sole purpose of connecting my Huion H420 Drawing Tablet. When I connected it, it recognized it as a mouse, but no cursor showed up when I hovered my pen over, and if I clicked, it would only click the middle of the screen. I know Wacom Tablets work, because I saw a question on here that had it work for a Wacom tablet. Maybe its not compatible with the Huion H420, or is there any workaround? </p>


问:
Root on Android x86_64
I have an Intel development board with an Atom processor running Android 6.0.1 and kernel version 3.14.64-x86_64. I can adb into the board and gain superuser privileges by typing su (su binary in /system/xbin), but any application requiring root permission does not run. RootChecker says that the device is not rooted. How can I run apps requiring root permission? do I have to root it some other way?</p>

Title: Root on Android x86_64


问:
Rollback Samsung Galaxy S7 camera app to the one in Android 6?
When my Galaxy S7 updated to Android 7, the built-in camera app also got updated to a newer version. I preferred the previous one, mostly because I could easily change the picture ratio/resolution without having to dig into option menus.

Is there a way to install the previous version, either as a replacement, or side by side, of the new one?


问:
How to extract the saved passwords on your phone?
EDIT: Sorry for the uninformative title, it kept saying "This title looks like spam!" so I had to rearrange the title a few times before I could post this.

I forgot my gmail password and the only way I can get into it is with my android phone which seems to remain logged in. Well actually I read how it works, the android gmail app stores an authentication token in a .db file, then it sends that authentication token to gmail, and only then gmail sends the password back. So if an attacker was to hack your phone, all they'd get is the authentication token.

Now I know I probably answered my own question there, that its impossible to get the password from the phone, but I just wanted to ask it anyway in case theres something I haven't taken into consideration.


问:
Edit code in android phone with Bitbucket server?
I'm using bitbucket server and Source Tree application as my source control service in android studio,

Is there anyway , I can edit code or see files in the cloud or something with my android phone?

recently I've founded the CodeAnyWhere app but it got some major problems,

Thanks in advance.


问:
Is there a way to force a new update to show up on Google Play?
Since apkmirror.com is not an official source, I would like to download directly from the Google Play Store.

But say, Pokemon Go updates have always been announced, and not available on Google Play but available on apkmirror.com

Wouldn't there actually exist a way to force a new update to show up on Google Play?  Maybe Google Play doesn't want a large amount of traffic to happen all of a sudden, so it does the release worldwide, region by region. But right now is 4am Pacific time. If it is open 4am in Pacific time, it really should not be too much traffic downloading it. If an update can be forced to show up by some advanced user during the non-peak hours (such as 1am to 6am), the traffic really should not be that much.


问:
Benefit of using Android encryption if my files are in sdcard?
I tried using Settings > Security > Encryption but found out it did not encrypt the sdcard.

My question now is, what kind of data is being protected by Android's built in encryption ? Is there any benefit to it if I am storing personal files to sdcard anyway?


问:
Android Notification Center
I would like to send a notification to an android device pair with router in the same network , what is the best solution to make this true ?

The notification is just a text message , the requirement is if the device in the range covered by the Wifi range and paired . i want to send a notification as that in application notification

Title: Android Notification Center


问:
I recently found that my inbox emails are not showing up on my Android
I tried adjusting settings to select inbox default but it's not working.  I can ready messages on my laptop, but they simply are not showing up on my smart device.  I get a message saying "You're all done.  Have a good day".  But I'm not having a good day....</p>


问:
Issue with fastboot giving remote: Command not allowed
I have an Honor 5C that I try to modify bootloader variables. First I need to get the list of variables by doing fastboot getvar all but it returns me an annoying:

```<code>aaaaaaa@bbbbbb:~$ fastboot getvar all
getvar:all FAILED (remote: Command not allowed)
finished. total time: 0.005s
</code>```

My phone is rooted, I can do anything with adb, be a superuser on the phone, ask its reboot with fastboot, but this command won't work as I would like. Does anyone has an idea about it ?


问:
Gmail message = Noise proof, coming call - ringing sound
I'm looking for a app that you can make the coming gmail message to give non sound but only vibration but when it comes to incoming call, you can hear the ringing sound.

Is there a app for android to do it?

Thank you!


问:
How to continue setting up Moto E phone when setup is stuck in a loop?
I have a 2nd generation Moto E phone running Lollipop. As a family member set a lock screen and forgot the password, I did a factory reset by selecting "Power" + "Down Arrow". Now, it is giving the initial Motorola setup screen. When I go through these settings, it keeps looping. It asks me to set the Privacy Settings. Then it asks me to enter my Google Account phone number and password. After entering this, it returns to asking me to enter the privacy settings. And then asks for the Google Account details again. It is in an endless loop. How can I setup the Moto E phone and get it out of this loop?</p>


问:
I want to automate backups on an encrypted device; how can I soft reboot into TWRP so I don't have to enter my password?
I've recently been exploring my options for automating backups, and I noticed FlashFire soft reboots into its environment, thereby eliminating the need to enter an encryption password. FlashFire has been extremely unreliable on my device, however, so I wonder: Is there any sort of command-line wizardry I can use to soft reboot into TWRP instead?</p>


问:
Where are the PRL and profile stored on the filesystem?
I'm talking about what can be updated in Settings->More->Cellular networks->Carrier settings. Where are they stored? On what partition and where, if anywhere, on the filesystem?</p>


问:
Google settings account information showing error
I am using Jio LYF LS4503 Mobile. It is re unrooted via kingroot App. Now the problem is that in Google settings Account information showing error. It is loading after a few seconds it shows error like screenshot.

I am using Jio 4G network. It works fine and i also tried using wifi but every time error appears.
What should i do to fix that?


问:
Bluetooth LE device cannot connect to LG G5 SE when phone is sleeping
I have LG G5 H840 (SE) with unmodified stock firmware.

I use cogito watch with it to receive notifications. This a Bluetooth LE hybrid smartwatch. When I go out of range and go back then my watch fails to reconnect with phone if phone is sleeping and running on battery.

If I wake it then connection is made successfully.
If I leave it sleeping but connected to charger then connection is made successfully too.

I paired my watch with my wife Huawei P8 Lite and my watch works with her phone without problems described above.

It looks like my LG is doing some aggressive battery optimization. I tried to disable "battery optimization" for bluetooth services and my watch application but this did not helped. Maybe someone had a similar problem and can give me some advice what could it check or change?


问:
After rooting my Samsung Galaxy S7 with Odin Windows Tool, I am locked out of my phone
I have followed the instructions here and used Odin to root my Galaxy S7 edge. During the process the phone has rebooted and is now asking for my draw pattern. However, it won't accept my pattern. Any suggestions...?</p>


问:
how do i change font style of any website on Android browser without rooting?
I want to know how can I change the font style of the webpage on any browser, it may be chrome, Mozilla, opera, or any other without rooting in android phone. </p>


问:
Autovoice stoped working till I close chrome
When I launch autovoice with voice command, it works first time, sometimes twice, but then hangs (totally no reaction) until I do one of the two things (I switch screen to google now which was closed by autovoice, or if I launch auto voice app)

Additionally, I must say that, when I say my command correctly, sometimes google now search stays active on the screen, and sometimes it is closed by tasker or autovoice. When it stays, all works fine.

I have samsung s7, android 7.0 no root.

here is my profile, task and command if you need I can record this strange behaviour


问:
Where are built in sound file images (album art) showing in music player? (path)
Hi and thanks in advance

Samsung Galaxy S 3 Mini, gt-i8190n, android 4.1.2

My problem: there are preinstaled/default/built in images for sound files that appear in Music Player (they're ugly for me)

That's what I write about.

My question: where can I find them, what is the path to the folder with them, can they be accessed without rooting, can they be switched?
I don't need to nor I want to change album artwork with any app, I don't need to have  album artwork matched with every sound file, I'd just like to switch up those random built in images to some that don't hurt my eyes with their ugliness :P
And I'd really, really like to know where they are and what is path to them, even if I won't be able to change them, but at least to satisfy my curiosity, and I'd appreciate an answer with those informations the most.

Please and thank You :)


问:
Android Wear 2.0 can you still synch "dnd" with phone?
The standard behavior before android wear 2.0 was that when I put the watch on DND my phone would go on DND too. That was precisely what I wanted. But now with AW2.0 they appear to be separate. Anyone know if I can change that back?</p>


问:
Who is showing up on the direct share contact list
hello I have a quick question
Is it possible a contact that you haven't used in a few months to show up in the direct share quick contacts? Or the contacts that show up tehrr are always Recently used or most Frequently used contacts?
Thanks


问:
Freeze and reboot after a few seconds
I have an older Android Phone from Samsung (GT-S7390L), and I have been using it for some time now.

I took it on a trip, and used the 3G network for the first time (I always have some wi-fi nearby), it worked normally for some hours.

There, I tried using an open wi-fi, but it was asking me to register an e-mail, and I thought it was too bothersome and switched back to 3G while I was charging the phone... But then the phone got a white line horizontally across the screen and rebooted, when it finished rebooting, I thought it was just some weird glitch, unlocked the screen with my password, then tried to go back to the messaging app I was using (Telegram) and then it restarted again.

After that, my phone keeps restarting, but not as soon as it boots, but about half a minute later, just enough for me to unlock my screen with the password and try to do anything, like, turn off the wi-fi or something.

It looks like it uses a lot of battery when rebooting, because it always seem to lose 1% of battery at every restart, if I let it restarting for a while, it gets very hot.

It recharges normally if off.
I can only turn it off by removing the battery.

It restarts even if I use the time I have before it restarts tp try to restart or shut down before it restarts (White line appears over shutdown/restart splash screen)

If it's recharging and restarts, screen also gets brighter when the white line appears.

I can get it to the menu where I can factory reset it, but I have two problems with it:

1- I need the backup files for my whatsapp, as there are some important messages I have to keep

2- I don't have the number I used to make that whatsapp anymore, so I can't put it onto another phone

If someone knows what can I do, I'd appreciate a lot;

Thanks in advance!

Title: Freeze and reboot after a few seconds


问:
Pull data from disabled device
I have a Samsung Galaxy S6, with a completely disabled screen. I want to pull recent images and data from it. USB Debugging is enabled, but the phone needs a passcode for me to access its' data. Is there any way I can enter the passcode or access the data remotely?</p>

Title: Pull data from disabled device


问:
How to install Android through CWM after accidentally deleting it
I have the Android phone Lava Iris X1. Unfortunately I have deleted my operating system in my phone. I want to install a new version of Android (Lollipop) on my phone with the help of Clockworkmod recovery. Please help me to do this.</p>


问:
Android Strange Display Multipled [virtualbox]
I don't know what's the category of this problem. But i only encountered this in several apps that runs under my emulator of Android 4.1.1 under VirtualBox.

What should i do to resolve this problem?


问:
Is it possible to view and intercept android's activity launch from a PC
I know when a particular activity is launched (for a particular app) it may or may not require additional arguments. Also, if an activity is exported then I (or any other app in the device) can launch it manually using adb activity manager like

```<code>am start -n yourpackagename/.activityname
</code>```

If needed, I can add arguments with this command using -e flag as well.

So here is what I expect:

Is there a way which can detect the launch of an android activity and show details such as the package name, name of the activity that is being launched, the arguments which are passed to the activity during launch, etc. I can do this with tools such as Drozer also

We all know about intercepting proxies such as OWASP ZAP or Burp which intercepts http requests and show us the headers and body data. I am looking for such a solution. Can this be done?


问:
Android Lollipop 5.0.1 apps cache saved in apps data Example:
In Android Lollipop 5.0.1: cache are stored within apps data. Example:
Facebook app had saved 400mb, not as a deletable cache but as app data. When I want to free up space I have to clear data and log in again and again... How to solve this issue?</p>


问:
What Android 6 (marshmallow) change prompted for systemless rooting?
Since Android 6 , Chain fire used Systemless rooting for installing SU binaries or for rooting purpose in general.
I was curious to know what changes in operating system prompted for systemless rooting in the first place. Was it just safety net api detecting old rooting methods or was there an Android OS or other api's change ?
In particular Which enhancement listed here does it get affected with and how ?</p>


问:
Change Arabic digits to English while phone language is Arabic
Every time I set Arabic language it comes with Arabic digits, and could make them English Format by MoreLocale 2 App, that needs grant with adb permission.CHANGE_CONFIGURATION.
Now I would do this without 3rd party apps, I didn't find anything similar in build.prop file, and I don't know how ?

Arabic digits : (٠ - ١ - ٢ - ٣ -٤ - ٥ - ٦ - ٧ - ٨ - ٩)


问:
How can I manage my RAM on a Nexus 5X?
I recently switched from a Samsung GS4 to a Nexus 5X. With my Samsung phone it was easy to clear out my RAM. I did it throughout the day to keep my phone running smoothly.

With my Nexus 5X, I can't figure out how to do it. Under settings, it tells me the average RAM usage (1.7GB) and which apps are using it but not how to free up RAM. When I google it, all the results suggest I clear the cache which is not the same as RAM. I even installed an app, Greenify, to try and help free up RAM but I couldn't get my phone to allow the app the permissions needed in order to force stop and control apps running in the background. I'm using Android 7.1.1. I regularly clear open applications but that doesn't seem to help.

Title: How can I manage my RAM on a Nexus 5X?


问:
How to connect external codecs/filters to KMPlayer?
There is players that supports either DTS and AC3 or custom aspect ratio, I need both these features in one player. But it seem that there is no such player, but it is possible to use codecs/filters. Here is some info from quora, but can understand exactrly how to do it: https://www.quora.com/What-Android-video-player-supports-a-custom-aspect-ratio-and-MKV-with-DTS-and-AC3/answer/Lareina-Bronte?srid=qgmD</p>


问:
Note4 freezes and crashes except when running aLogrec
My Note4 started locking up and crashing after the last OS update a week or so ago (to 6.0.1). I ended up having to do a factory reset twice. The first time I tried to restore from Google's backup and had the same problems.

I also installed aLogrec and found that the problems seemed less frequent.
Unfortunately i never managed to get at the logs before the reset.
After the last reinstall I just kept aLogrec running and had no problem for about 2 days. Today I turned off  aLogrec and had 2 lock ups within several hours.

The lockup are so severe that I need to remove the battery. Holding down the power button for over a minute does not help.

What would explain this behaviour?


问:
how can you bypass the factory settings password of a display sample tablet
I was given a rca 9" tablet that I want to give to my 9 yr old daughter. it powered up but had a display video showing.  I followed video to get back to factory reset but it only gets to a point where it needs a password saying settings locked . I found out more about tablet it had a sticker that said not for retail sale this unit is a display sample and is not for consumer use . it has limited functionality and will not work for normal use.
am I waisting my time with this tablet ..how can I find out what the password is to unlock settings
it is a rca 9" display tablet model#RCT6293W23
ANY HELP WOULD BE MUCH APPRECIATED</p>


问:
Android Phone connected as ttyUSB device
I need to connect my Android phone or tablet to my Ubuntu 16.04 and use smstools or minicom for reciving/sending sms for further data processing. In all tutorials about minicon or smstools they discribe connected Android device as ttyUSB*, whereas in my case every time I connect my Samsung S6 (stock Android 6.0.1) or Samsung Tab S2 device (stock Android 6.0.1) it shows up in dev directory as libmtp-1-2. not as tty device.

When I point in minicon to /dev/libmtp nothing is happening.

Are my devices incompatible to run such software or do I need to root my devices to deal with stock system limitations?

Thanks in advanced


问:
secret test menu (ie *#*#4636#*#*) has no battery, network locks, or phone tests
just got a refurbished moto g4. I wanted to run some tests and check the battery health status, using the secret code, but there's only those 4 in there. How come?

In the mean time, I tried using apps to check battery health (not sure how accurate it was), and manually test other things (any tips?)


问:
Android boot/radio/vendor images: What needs to be matching?
Today i got a replacement phone for my nexus 5x and i wanted to use a TWRP (disk image) backup from the old one. It's running now after quite a bit of experimenting to find matching images, including the problem of images which were no longer available (i.e. radio for MOB30R), vendor.img from an older ROM (MTC19C) and the choice of several factory images. The ROM in the backup is a 6.0.1 CM13 build.

First i it did not boot, then i restored the boot.img from the TWRP backup. Then everything ran smoothly, but the phone did not recognize the radio. After flashing radio and vendor.img, it did not boot again, so i tried to flash boot,vendor,radio consistent from a factory image, then it stopped booting again, until i flashed a vendor.img from an old backup and the boot.img from the recent backup and got it working.

Now my question is, what depends on each other and what is unrelated?

ROM version

vendor.img

boot.img

bootloader.img

radio.img

I understood the files as mostly unrelated, so that the latest radio would just improve the baseband and the latest vendor.img would have better hardware drivers, and so on. But obviously they have some more complicated dependencies.


问:
Missing Quick Settings Panel in Ultra Power Saving after upgrade to android 6.0.1 (Samsung S5)
I have recently upgraded to Android 6.0.1 in Samsung Galaxy S5. After the upgrade the Quick Settings Panel in Ultra Power Saving Mode has disappeared. The panel was available before by swiping the top of the screen, just like in the normal Non-Power Saving Mode. Currently there is only

time and date,

a gear icon for accessing settings,

a button to turn off the Ultra Power Saving Mode.

How can I bring back the "Quick Settings with a swipe" feature in Ultra Power Saving mode?


问:
Nexus S: slow, jerky web browser scrolling in ICS (compared to Gingerbread)
My Nexus S was OTA-upgraded yesterday to Ice Cream Sandwich 4.0.3 from 2.3 (Gingerbread), and I'm still finding my way around.  One problem I've noticed has been web browser performance, particularly scrolling.

When I load Google News and scroll it up and down with my finger, or when I swipe fast enough that it has enough momentum to continue scrolling for a while, scrolling is very jerky instead of smooth like Gingerbread was.

Is this a known problem, and if so is there a fix planned or a workaround I can use?  This sounds like a trivial display problem but it actually makes the browser difficult to use for reading and scanning pages.


问:
Is there a way to reduce the contrast of the screen without dimming it?
So I was trying for the umpteenth time the other day to watch video content in bright sunlight, and it occurred to me that if I had some kind of app that reduces the contrast by raising the level of black to dark gray rather than lowering the level of white, the picture would be a lot more viewable. I searched for such an app, but all the ones I found that claim to control contrast have a dimming effect. I don't want to dim the screen. Does anyone know how I can keep the screen bright and still achieve the desired result? I'm using an LG VS810PP (Transpyre) running Android 5.1.1 Lollipop.</p>


问:
Disable particular orientations, system-wide
I'd like to install some software (willing to write it myself if necessary) on Android devices which will restrict them from rotating to particular orientations.

There are plenty of apps that will lock a particular orientation, but what I would like to do is say (for example) you are allowed any orientation but not reverse portrait.

How can I achieve this?


问:
Pixel MTP Drivers for Windows
Is there someplace I can download the Windows MTP drivers for the Pixel that is not Windows Update?

Plugging my Pixel into a Windows box results in the following:

Trying to update the driver fails:

I have tried several different 3rd party cables after reading the supplied cable caused some people problems. I have tried rebooting my computer after some had said that fixed the issue. I have tried switching from File Transfer mode to Photo Transfer mode and back again. No difference.

I have also read that some people were able to manually select MTP Device from the list of available drivers in Windows Update. There is no such listing in my list.

Is this driver available anywhere other than Windows Update so I can just use the Have Disk install method? Can someone pull the .inf or .sys file off their system and post it some place? I can host it in Dropbox or Drive or someplace but I currently have no way to get it in the first place.

Title: Pixel MTP Drivers for Windows


问:
IMEI null/null?
My phone is a Samsung Galaxy S3 GT-I9305T, and I am getting a "Insert SIM card to access network services" error. I dialled *#06# and it said null/null, meaning I have a null IMEI. How do I fix this? Is it fixable?</p>

Title: IMEI null/null?


问:
Galaxy A3 (2016) broken screen access files
I have a Samsung Galaxy A3 (2016) - SM-A310F - with a broken screen from a friend to try to backup the files on it. Touch doesn't work and you can't see anything, but I can unlock it with the home button, since no lock screen code is set.

When I connect it to the computer I can't access any files. Samsung Kies says that the device is locked and I should unlock it, even though it is unlocked. I think this is because the device is in charge only mode. USB debugging is disabled so I can't access the phone via adb.

I already checked the broken-screen tag-wiki, but didn't find any solution which helps in my case. I can't access via adb, fastboot doesn't work, too. And I can't install CWM/TWRP because an option is disabled in settings :/


问:
My internal memory(not free storage) just vanished?
I own a lenovo vibe c, currently running Android 5.1. The phone has an internal memory of 16 GB.

The phone ran well for about 8 months, and as my mother used it more it was not put to heavy tasks until I downloaded Asphalt 8 and NFS no limits. Gradually the phone began to lag and it was about two weeks ago that the phone lagged seriously and at last my mother took it to the service centre. The guys at the centre did a factory reset (perhaps) and as a result I lost my games(). After that when my mother brought the phone back home I was stunned to see that the internal memory has dropped down to 8 GB (according to the system, see below). But however clean master shows it to be around 4GB (while before it showed the total space to be 16GB):

Now I'm really confused. Please help me.
Also I want to say that to play the games again without lag I decided to root my phone to install the RAMEXPANDER and swap some sdcard memory to increase the ram virtually. So I also have a question that can the rooting process take away some memory(as a side effect, in case something went wrong) ( I am new to it and so I don't know much about it)

I had swapped about 600MB memory of my internal storage and also I had noticed the problem before I installed the RAM expander. I am totally confused with it, while the system shows 8GB storage, other apps like Clean Master, ES File Explorer, KingRoot etc. everyone shows it to be around 4GB.


问:
No password input after locking the device from Android Device Manager
I have forgotten my unlock pattern and tried to lock my device with a password on Android Device Manager (ADM). It did lock and a message, "Your device is locked by Android Device Manager" appears, but there's no way of entering a password on that screen.

There's no password field, and just a back click and it's all gone. Pressing that lock icon doesn't work, it's not a button, neither sliding up or down, left or right is any good.

How to unlock it?

ContentLicense: CC BY-SA 4.0


问:
Android suddenly freed up several GB of space itself? (Note 3)
My Note3 has been nearly full (~500MB or so left) for a month or so.

Tonight I was web-browsing in Chrome, and accidentally hit "download" on a gigantic multi-GB file on archive.org.  Chrome froze up for a while (maybe 10-30 seconds or so).  I scrambled to get to Settings to turn off mobile data, and luckily the download failed.

Here's the really weird thing.  When I started poking around the phone afterwards, I was really surprised to see over 3GB of memory free.  There had been probably less than 700MB free before this happened.

Where did all that space come from?

On the face of it this would seem to be great-- "yay, free space!".  But, I am a little antsy and confused, as well as just plain curious, because I have no idea how the phone did this.

1) Is this a known behavior that Android does sometimes?  I don't recall ever seeing this happen before.  I vaguely remember Windows having some laundry list of things it deletes when space needs are dire-- does Android do something similar?  Maybe some kind of backup installer / system snapshot / crash dump kinds of files?

2) Is there any way of finding out what it deleted?  Or otherwise what it did to get this space clear?

(I'm hoping to find out what it did delete, b/c I want to make sure it didn't just choose to delete something I wanted to keep, ie "hey, you haven't looked at these photos in three months, so you'll never miss them; they're going in the trash.")

3) If it deleted some backup install or system snapshot or crash dump kinds of files, that'd be great... but it'd also be great how to TELL it to delete these kinds of things next time to free up the space by choice.  In other words, "If I could have had 3GB this easily all along, how can I ask for it?"


问:
Samsung galaxy s5 doesn't turn on my powerbank Platinet 9000mAh
My powerbank platinet 9000mAh after 5 minutes of standby goes asleep and wakes up when I plug in charger or any device.

When I connect raspberry pi, usb camera, wifi adapter or pendrive my powerbank wakes up. Problem is with my samsung galaxy s5. Nothing happens when plug my smartphone  - powerbank remains in sleeping mode. Firstly I have to connect any other device - then it's wakes up for 5 minutes and I can plug in my samsung and charge.

Where is the problem? There are no  buttons on powerbank.


问:
Get logs for file transfer using any medium
Is there any app (using root permission also if possible) using which i can get logs for file transfer using MTP or Over Bluetooth.

I know about SysLog app but does it print MTP logs also.

Any help will be appreciated.


问:
Calibrate accelerometer?
I'm developing an app that is supposed to measure vertical accelerations, and in the process I've discovered that the accelerometer seems to be uncalibrated. When the phone is lying perfectly horizontal, the Z axis acceleration should be 9.81, but it is about 8.81 (X and Y being roughly 0.0).

I can of course offset the error from within the app by letting the user "calibrate" the app while the phone is lying still. But it seems odd that there is no method within Android to do this - sometimes Google Maps prompts me to calibrate the compass by moving the phone in figure eights - but I have not seen any way to calibrate other sensors... is it possible?

A further problem is that if I turn the phone so the top is facing straight up (up/down in line with the direction of gravity), the offset of the axis' are different from what is expected, and different from the offsets I get when the screen is facing up. This all seems to indicate that the accelerometer is not as accurate as one might think, and when adding rotation to the mix the results get even more skewed...

Title: Calibrate accelerometer?


问:
How can a web page get my phone number via the Google Now browser?
I tapped on one of the cards in Google Now, which took me to breitbart.com. A few seconds later, I got redirected to cinemobi.club and was told that I signed up for a paid subscription to that web site, which was immediately followed by an SMS saying:

FreeMsg:You've subscribed to Cinemobi for £1.99/week.Free for first 24hrs. Unsubscribe? send STOP CINEMOBI to 80206.Need help? Call 08009247988

How is this even possible? I didn't enter my phone number and I'd never entered any personal information in this browser (or Chrome) because I only use Firefox, except when opening a link in Google Now because they don't honour my browser preference by default.

Here's the link I opened originally: http://www.breitbart.com/national-security/2017/04/13/venezuela-socialist-mob-assaults-archbishop-caracas-holy-thursday/

In case it helps, there must be some JavaScript code in that page that made a POST request to cinemobi.club, based on the screen I got when trying to go back:

I'm using a Nexus 5X with the latest patches.


问:
How can I fix virus-infected USB flash drive using my Android (via USB otg)?
My USB flash drive was plugged into an infected PC, and now it contains viruses. Actually, that flash drive was filled with stuff I wanted to transfer to my Android. So I decided to use that flash drive on my phone anyway (via otg) considering those PC viruses would not affect an Android. It went well in the beginning, I transferred files successfully, but now the flash drive shows size 0 bytes when I connect it to phone.
Is there any app that could help me?
My phone is sadly non rooted and I can't root it without PC I guess.


问:
Power Down a Locked Device
So I brought a Samsung S7 while on a trip, quickly ran through the setup, adding a fingerprint and a pattern password. I didn't pay much attention to the pattern password, as I had the fingerprint.

What I didn't realise is that you need the pattern password every time you power on, and now I've forgotten it.

What I'm now trying to do is turn the phone off, so I can turn it back on using Power + Volume + Home combination and reset the phone. But it seems to be asking for my pattern before it can turn off.

So how can I turn the phone off?

Title: Power Down a Locked Device


问:
Downgrade Galaxy Grand Prime SM-G530H to Kitkat
I upgraded my SM-G530H to 5.0.2 via the phone Software Updater a long time ago. Now I want to downgrade it and flash the stock 4.4.4 ROM via Odin but it fails with this log

```<code><ID:0/010> Added!!
<ID:0/010> Odin v.3 engine (ID:10)..
<ID:0/010> File analysis..
<ID:0/010> SetupConnection..
<ID:0/010> Initialzation..
<ID:0/010> Get PIT for mapping..
<ID:0/010> Firmware update start..
<ID:0/010> aboot.mbn
<ID:0/010> NAND Write Start!!
<ID:0/010> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)
</code>```

After some search people say the ROM must have the same baseband version to flash. But I can't find any Kitkat ROM on SamMobile that match my baseband (it's looks like Kitkat baseband is different from Lollipop's one)

So anyone can share a method to downgrade to stock Kitkat on SM-G530H?

I had previously installed a custom recovery (TWRP 3.1.0) and my baseband version is G530HXCS1BQA1


问:
Backup encrypted data from Android with broken screen
short story is as follows: I have a Sony Xperia M2 with display suffering from water damage. It's completely black but it's still working, booting and responding to touch. However, I need to enter my PIN because the device is encrypted. I want to back up some data before I toss that phone. All I would really need to do is enter the 4 digits, then I'd have access to all the files from my PC, but somehow that doesn't work, I tried it a hundred times blind-typing, but I keep messing it up. Does anybody have a solution for that, or a similar phone and a screenshot that could show me what I am doing wrong? (Trying to type the digits, then hitting lower right "Enter" button. Does not work. I get haptic feedback on the "back" button on the lower left corner and I can do something like emergency call in the top middle of the display.)

Apart from that, I tried to access the phone from my Linux laptop. adb does not work at all, probably because USB debug is disabled. I tried to enter fastboot mode and flash a TWRP recovery image like it has been suggested multiple times here to bypass the USB-debug-issue, with no luck. I get into fastboot mode, fastboot sees the device, but when I try to load the boot image, this message pops up:

```<code>creating boot image...
creating boot image - 382976 bytes
downloading 'boot.img'...
OKAY [  0.014s]
booting...
FAILED (status read failed (No such device))
finished. total time: 5.286s
</code>```

Then the blue LED turns off and gets back to red -> orange, which I assume is nothing but a normal boot.

Does anybody know anything else I could try or why the recovery image does not work? Any suggestion is really much appreciated.


问:
Transfer adoptable SD card to another ROM
Is it possible to use an adoptable SD card on another ROM, by copying the encryption key located at /data/misc/vold/*.key?

According to the Android documentation :

.. Keys are associated with adopted devices based on the adopted partition GUID.
..
Because the contents of an adopted storage device are strongly tied to the
  Android device that adopted it, the encryption keys should not be extractable
  from the parent device, and therefore the storage device can't be mounted elsewhere.

Apart from some errors that may be caused by the different ROM, is it possible to access the SD card across ROMs? Or is adoptable storage only accessible on the ROM it was created with?


问:
Updater process ended with ERROR: 1
I just wanted to root my galaxy note 5 (sm-n920c (dual sim)). I used SpaceX-Kernel-v0.1_N920CD(official).tar.md5
 and SpaceX-Kernel-v0.1_N920T(official).tar.md5and Noble_Kernel_Auto-Root_N920T_v0.1_Rebuid3.tar.md5 but they didn't work an gave me an error about kernel is nor seandroid enforcing  with red line above the startup page.

So I searched again and found this tutorial http://galaxynote5root.com/galaxy-note-5-root/how-to-root-galaxy-note-5-on-android-7-0-nougat-w-magisk/2/

everything was ok but in last step I got this error:

```<code>Updater process ended with ERROR: 1
Error installing zip file'/sdcard/samsung-antiroot-removal-2.4.zip'
</code>```

Also I have 6.4G free space on my phone!
What's the problem and how can I fix it?

Title: Updater process ended with ERROR: 1


问:
Firefox DB doesn't include the latest bookmarks
I've located the browser.db (\data\data\apps\org.mozilla.firefox\files\mozilla\%$#!.default), but opening it and looking at the "Bookmarks" table doesn't show the latest bookmarks.
Seems like the bookmarks created today (a few hours ago) are not in the table.
Is there another place holding "recent" bookmarks?</p>


问:
How to set custom sound for SMS from certain sender in MIUI 8.x?
I used to own Huawei device with MIUI 5, and there was an option to set custom melody for SMS from a certain sender (so you could understand if you received an SMS from this certain sender just by hearing the sound).

Now I own Xiaomi Mi5 with MIUI 8.1 and totally can't find such an option by myself: there is only option to set the sound for SMS on 1st and 2nd SIM-card.

Is there a way to get custom sound for SMS from certain sender in MIUI 8?


问:
Google map's timeline is missing
I'm from Sri Lanka and recently I found out that "Google map's timeline" option is missing on my Google maps Android application and even on the website. I've heard that some countries don't allow for such services. But I've used it before. Is there any way of using this feature?</p>

Title: Google map's timeline is missing


问:
Unlocking bootloader LG G6 Verizon

I'm not able to get fastboot to respond to any commands

There is no OEM Unlock Option visible in the Developer Options Screen

LG's tool does not support the LG G6

Are there other options I should be exploring?

Title: Unlocking bootloader LG G6 Verizon


问:
Will this charger damage my phone?
I have a 3 port USB-C charger from Aukey that for the past weeks worked well with my Nexus 5X when used with an old ATX power supply as power source.

I found critical reviews on Amazon (link to US website, but same type of issues on DE and IT as well) where the product stops working or even fries the phones after some time.

I am using exclusively the USB-C port, the other ones cannot charge the Nexux 5X as fast. I am using the original Nexus 5X USB-C cable, not the one provided by AUKEY (it is said to be low quality).

I decided to take it apart and I measured the voltage on the power pins of USB-C while charging and while the charger is powered by 12.2 V from a DC-DC power supply. The source is therefore cleaner than a car electric circuit would be.

I measured with this conditions on the output port 5.10-5.38 V. The tester gives me 5.01 on a LM7805 used as calibration.

Nexus 5X is not Quick charge 3 compatible, therefore it does not negotiate voltages continuously variable above 5 V, in theory it should only jump to 9 V but I haven't seen it, even if the charger could provide it.

Will the 5.4 V damage my Nexus 5X, as it happened to (other) smartphones from the reviews? After all, USB tolerates up to 5.25 V only.

Title: Will this charger damage my phone?


问:
Send Airdrop from Android
Is there any way to send files from an Android phone via Apple's Airdrop to an iPhone? I'm not looking for an alternative system, just want to mess with some colleagues who have iPhones. Currently running CM14.1 with root/xposed.

Thanks in advance.

Title: Send Airdrop from Android


问:
Root an LG Spirit with no closed source programs
I own an LG Spirit (Android 6.0) and I'm sick of the limitations that are put on my phone. I decided to attempt rooting, and possibly bootloader unlocking and flashing. But, for now, I'm stuck on rooting.

My problem is that I want to totally avoid execution of closed source software that requires and/or manages root access. I'm not a developer, but I put far more trust in open source software that I can read (even if I lack the skills, but it's a nice moment to learn something new) than in shady¹ applications that promise me to root a phone with one click. I'd like to learn something about the process that I'm doing on my phone, and I never trusted the easy ways when dealing with electronic devices.

Fact is, I don't know where to begin. I've found phh's project, superuser (git: https://github.com/phhusson/Superuser), but the documentation is so technical I really can't understand a thing, even if my phone is supported (or if I can create the necessary files, or else). When I look for newbie guides to rooting, all I can find are guides to the one click root apps (that can be summarized as "Download->Click Root"). So, I think I have to learn something along the way to proceed.

By the way, my computer skills: I just know a little of C (from an university course, absymal quality), I can handle Linux shell decently, I'm willing to learn.

My main question is:

Is anyone willing to share his/her experience about open source rooting? Can someone point me some reference for learning about what's needed to understand the procedures that he/she has done to root his/her phone in an open source way?

Or, if it is too broad:

Does anyone with experience with superuser know where I can read something, more newbie friendly, to begin understanding how that procedure works?

I thank you all for your attention.

¹No offense meant to the honest guys and gals that developed a closed source way to root! Unfortunately, closed source brings this kind of questions by nature.


问:
LineageOS: run custom script (start service) at boot
Seems like a simple thing. How can I run custom script on my (rooted) android with LineageOS at boot?

Neither creating it as /data/local/userinit.d/99sshd nor /data/local/userinit.sh did not help.

The LineageOS actually states in /etc/init.d/20userinit that it will run /data/local/userinit.sh if exists, but according to logcat it does not.

The script (in my case) runs SSH daemon, which runs fine when I execute the script manually.


问:
Locating ARP cache on an android device
If you are familiar with the command prompt in windows, there is an command that can used to see the ARP (Address Resolution Protocol) Cache in the command prompt i.e. arp -a. It is supposedly a table where static/dynamic  MAC-to-IP address associations are stored.

In android 5.1 is there a similar ARP cache also? If there is, how can I view the current list of Mac-IP address associations lets say using a Samsung Galaxy phone for example?

Title: Locating ARP cache on an android device


问:
Generic way to access Android protected filesystem (Not to be confused with rooting)
I'm trying to get full access to the Android file system on a device without actually rooting the device. Something that could get me into the file system at boot time for example. Looking for a generic way, not just working on single device.

The goal is to remove some protected apps. And because I don't trust KingoRoot.

Phones have a way of updating themselves and this means that the update package should have rights to do anything.

Half-answers are also welcome, as in pointing me in the right direction.


问:
Can a factory reset really fix proximity sensor problem?
The screen on my Alcatel Idol 3 goes black when making or answering a call. This suggests that the proximity sensor may be bad. The Phone Tester app indicates that the proximity sensor reports "near" all the time. A customer support rep had be do a reset (edit: wipe system cache) on my phone (not factory reset). This did not resolve the problem. He then suggested doing a factory reset and get back with him to submit a warranty claim if that didn't work. What are the chances that a factory reset will resolve this problem?</p>


问:
Galaxy S2 launcher repeatedly crashes and reboots phone following software update 20/12/2011
I updated the phones software using its own software update menu option.  As part of the update process, the phone rebooted automatically.  After that, the phone just keeps rebooting itself.  As soon as the media scanner finishes scanning, the phone reboots.  the cycle is about 20-30 seconds.  During these repeated reboots I saw once an error message saying the launcher has crashed.  Since the phone keeps rebooting, I can't open a menu or do anything with it.  It does not connect to the PC as the reboot cycle is way too short.

How can I recover from this mess?  Anyone can help me?  Thank you so much.

Is there any way to backup the data from the phone?  Is there a 'safe-mode'?

My galaxy s2 uses official software, and was updated to latest software a month ago.  I checked and found there is a new update for me, so I started the process but it turned out to be a disaster.


问:
What is lk partition
I have a LG phone (K350nds) which bootloader can be unlocked but no recovery can be flashed or kernel because of some signature or whatever, on similar model (K10) that can be bypassed by modifying aboot partition to make some function always return true but that is qualcomm device on same place on my phone (MTK mt6735) there is partition called lk. So what is that partition and what is her purpose?</p>

Title: What is lk partition


问:
Editing hosts file to restrict website on wifi and mobile data
I have a rooted Samsung Note4 that is running cyanogenmod. I have gone in and edited my hosts file to restrict access to certain websites. However, I have noticed that the restrictions only works when I'm connected to wifi, not when I'm connected to mobile data (lte, 4g, etc). How can I remedy this situation as to block access to a website no matter how I'm connected?</p>


问:
Flashing Lineage OS 14.1 Nexus 5 hammerhead
I am flashing my Lineage OS 14.1 on my Nexus 5 (hammerhead). It went without error, and I am now booting. However, the curved line with a circle cycling from right to left has been looping for >10 minutes. Is it still "working"? Has it frozen? Should I do a hard reset (hold power and volume down)?

Thanks.


问:
How to see the list of uninstalled applications?
Is there a way to see the list of uninstalled applications (which are also removed from the list provided by Google Play) or the history of app installations? Does adb support any operations like this?


问:
Lifecycle and Compatibility of An Android Version (say 4.4.2)
I believe, currently Android 7.1.2 is the most updated version of android.

I searched more to understand the life cycle of an android version but I couldn’t find.

For example,

What would be the life cycle of Android 4.4.2 after which Android 4.4.2 will be incompatible to most android applications?

My android device is 4.4.2. I would like to know same for my device as well i.e. what would be the life cycle of Android 4.4.2 after which my device will be incompatible to most android applications.

These days, the compatibility information of most android applications is like 4.0+.

I believe I explained my doubt well.

With Regards

Tech Goal


问:
Is there any way to get Google Assistant to work on CM13 x86?
I have tried everything. Installed CM13, got Xposed to work. Installed Assistant enabler, Android N-ify. Tried more versions. x86_64, CM14 (Kept constantly rebooting), Pure Android N. Nothing. Spent more than 8 hours on this. I'm Using VirtualBox on Windows 10.

Does anybody know an actual way to work this out?


问:
Android RAM: how to ensure an app does not get closed
My understanding about android RAM management: when you press the home button, the app goes in the background, it does not actually get closed. The app only get closed when the Android OS decides that it is time to free up some RAM (e.g. because you are launching an app that needs a lot of memory).

I have a device with 4GB of RAM (Huawei P9 plus), but Android start closing apps when there is still 1.5GB of RAM free.

In particular, this is troublesome for Dosbox (where you cannot save your progress easily). So I would like to ensure that Android only closes dosbox when it really needs the RAM.

Is there anyway to do this? Either by prioritizing which app get closed first, or by stipulating at which RAM level apps get closed. Note: I cannot root my phone, but an option which involves root would be better than nothing.

Thanks, Serge


问:
Why can't I use the the data service all of a sudden on my android phone?
I know I'll receive a lot of vote-downs because of this post, but I dont really know what has happened and where I am no one can help me.

I am in China and my Huawei (European) phone has worked just fine on wifi, but after 2 months I topped it up and the message came that I have data now, but I cant use anything. It shows that there is inbound traffic, but nothing seems to go outward. The APN settings look just fine. Huawei recently has come up with an update of their ROM. I am wondering if that can be the source of the problem.

Any ideas why? As you can see the arrow is grayed out. It's just weird.


问:
How to make an app only work on wifi (never use data even if opened)
I have a new Android version 5.1, Moto E 2nd Gen.

I just figured out which apps used up all my cell data, so I want to make it so these data-guzzling apps (the ones I want to keep) work ONLY on wifi, even if accidentally opened - Like turning off data but for only specific apps. Is this possible?

I already disabled the background data, updates, and sync - this doesn't get rid of ALL data usage though.

I tried this post: Limit apps to only work if connected to WiFi But this is a different system or something from the one I'm using, the answer does not work on my phone exactly as shown. If something similar works for mine, please give me step by step of how to do it with mine.

Thank you!


问:
Can i turn off all Firefox logging on Android, how?
Just found 8 gc- and cc- logs of about 100MB each on my phone. Not the first time I've had problems with Firefox creating unwanted log files. Is there a setting I can make to turn off all logging?
Seems weird to have any logging enabled by default, certainly logging that makes several text files of over 100MB on a phone app.</p>


问:
Pdf videos on mobile phone
I put a video in my pdf with Acrobat and there I can watch my video. But if I open the pdf on my mobile, I can't watch the video, I only see an image. Is there a way to watch videos of a pdf in a mobile? I have a samsung J5.</p>

Title: Pdf videos on mobile phone


问:
Buggy android does not turn on
I got a Yu Yuphoria 5010.
I had custom installed Marshmallow CyanogenMod a few months back.

Recently, the settings would not open. Instead it started showing the message:

```<code>Unfortunately, Settings has stopped

                   Report    Cancel
</code>```

The bug report would also not get reported when I press Report. So I tried to reboot the system. Although the phone shut down. But it didn't turn on anymore. I tried charging the phone for a couple hours, but in vain. I cannot even enter the recovery mode by pressing vol up + power + vol down keys.

I tried browsing the net for possible solutions. The closest I came was this section Did it gradually get buggy and then die? on this link.

How can I restore my phone's functionality?

Title: Buggy android does not turn on


问:
Block all internet traffic on a rooted device
I want to block completely and forever(even after factory-restoring the device) all the internet connectivity(WiFi, 3G and 4G) on a rooted device.


问:
How to fix infinite bootloop problem in Sparkle V. Please help
I have a sparkle v which is unrooted and also I don't have any software like cwm.

My phone is stuck in an infinite bootloop. I tried removing the battery, going to recovery mode and factory resetting it and clearing cache.

I have marshmallow 6.0.1 in my phone before this problem.

None of those worked. Please help.


问:
Kernel module for create hostapd on android things
I am trying to create an access point on Android Things for raspberry pi 3, the hostapd configuration:

```<code>cat > data/misc/wifi/hostapd.conf << EOF
interface=wlan0
driver=nl80211
ctrl_interface=/data/misc/wifi/hostapd
ssid=myid
channel=6
ieee80211n=1
hw_mode=g
ignore_broadcast_ssid=0
wpa=2
rsn_pairwise=CCMP
wpa_passphrase=mypassword
EOF
</code>```

I have the following errors on logcat when call /system/bin/hostapd -e /data/misc/wifi/entropy.bin /data/misc/wifi/hostapd.conf

output:

```<code>E hostapd : Failed to create interface mon.wlan0: -95 (Operation not supported on transport endpoint)

I hostapd : rfkill: Cannot open RFKILL control device

W hostapd : wlan0: Could not connect to kernel driver
</code>```

If I write lsmod I Have the following error:

```<code>lsmod: No file /proc/modules: No such file or directory
</code>```

So what is the correct driver= value to create the ap?


问:
Can I move the keyboard selector button?
I have a Samsung Galaxy S8+. The way that I naturally grip the phone, combined with the practically bezel-less display, means that I'm often hitting the keyboard selection button by accident while I'm typing one-handed.

Is there any way to move this button to the left side of the screen, or elsewhere, so I'm less likely to hit it on accident?


问:
Disabling certain applications on Android 6.0.1
I am trying to disable certain applications from being run on our android company issued cellphones. We tried simply downloading Applock on the play store but apparently some employees have gone around this. Is this anything in android that gives you the option to disable installation or running applications? I have root access and all phones running superuser.  </p>

OwnerDisplayName: Noah


问:
How can I do USB tethering with my Samsung Galaxy S5 with the wifi still turned on?
How can I do USB tethering with my Samsung Galaxy S5 with the wifi still turned on?

Hello,

So I have checked with my old phone (Samsung Galaxy Ace) and it can do USB tethering just fine with wifi connection still turned on.

But when I try to do the same thing with my Samsung Galaxy S5 and when I click on USB tethering it prompts me "Turning on USB tethering will turn off wi-fi".

What is this nonsense and how can I fix it?


问:
Root attempt Galaxy S8+, touch screen unresponsive at TWRP
I'm going to try to keep this as simple as possible as I don't really know what I did wrong or how I ended up where I am now.

I have a Samsung Galaxy S8+ running Android 7.0 and I decided to root it. I decided to follow this guy's instructions on how to do it: https://www.youtube.com/watch?v=eh-I4uxAmUY

I follow his steps and am bought to the "Unmodified System Partition" menu after having gone through the process of factory resetting, wiping my data and using Odin to flash twrp-3.1.0-r1_dreamlteks.

The problem is that now the touch screen is unresponsive. It does literally nothing.

I am stuck at the screen that says "Keep System Read only?" where I have to "Swipe to Unlock Modifications", but find myself unable to do so because my touch screen doesn't let me swipe!

So now I'm panicking:
Firstly, I can't get the phone to shut down. Holding the power button does nothing, even if I hold it for a full minute.
Secondly, I can't boot the phone into anything except this unresponsive TWRP thing.
Thirdly, my computer no longer recognizes my phone when I try to connect it via USB (might be unrelated?).

Is my phone just bricked now?

Can I save this rooting attempt in any way, or at least revert to the stock?

Will bringing the phone to a retailer help me in any way, or have I already broken the warranty?

UPDATE 1: RMarkwald has bought it to my attention that I need to revert back to stock, but I am not sure I understand how to do so from my current situation, being locked at the TWRP-screen and all. Any information on the topic in future replies is deeply appreciated.


问:
Autoupdate not working automatically
I have set the Play store to autoupdate on wifi, and all the individual app settings allow autoupdate, but still I am being asked to approve individual updates for each app. When I approve them, there don't seem to be any changes to the permissions. What else could be the reason that autoupdate isn't working?

I am using a Samsung Galaxy S5 mini which recently updated to marshmallow (the autoupdate for apps was already not working before the OS update)

Title: Autoupdate not working automatically


问:
Google now travel time updates
I use a google pixel and yesterday, google now asked if I'm interested in travel time updates to a shopping mall I recently visited and I happened to tap on 'yes'. Now, it shows me the ETA to that place all the time. I wish to disable ETA for this place now.

I'm pretty sure this feature was available as a yes/no questionier in google now > customize > everything else. But at the moment I do not see it. Has it moved elsewhere? Anyone having insight on this, please help.

Title: Google now travel time updates


问:
When files are created in Android 4.2 and above, are files ever stored in one location?

/sdcard -> /storage/sdcard0

/storage/sdcard0 -> /storage/emulated/legacy

/storage/emulated/legacy -> /storage/emulated/0

It is known that symlinks in the above example are locations on the Android file system that reference other storage locations on a device. However, when a user creates a file, in any of the locations above, all of the locations will contain the same file, but where is the original file? Does the file remain in the location in which it was created and is referenced by all the other symlinks? I would like to know if any of the above locations store the original file or if there no original file, what is the technical process that Android handles that file?


问:
What is this doorbell sound on notifications (ONYX Lineage14.1-20170420)
When I receive a notification on my phone, it plays a long doorbell sound (regardless of which app causes the notification). Where does it come from and how do I disable it? I can't find it in Sound or Notification options.

I recorded the sound in a video from my other phone, here is a link to it:
https://youtu.be/O4brgMjAS3M

Furthermore, last time I wanted to authenticate with google 2 step verification, the sound kept playing until i rebooted my phone (latest gapps installed - mini 20170427)


问:
Is there a way on a DUAL SIM Android phone to configure on a per-app basis, which app uses which sim card to access internet?
Let's say, I have two SIM cards, the first one has an unlimited but slow 3G internet connection, the other SIM has a very fast LTE Internet connection with limited data volume.
So I would use the first SIM card for all apps, downloads, web surfing, app updates, music streaming, data synchronisation like Dropbox and Google Drive etc.
But for Skype/WhatsApp video calls and HD video streaming I would prefer to use the second sim card with LTE.
Is that possible on Android?

If it is inpossible, probably another scenario will work somehow: if I start Skype/Netflix, all background internet connections should be stopped and the second sim must be activated for internet connections.

If there is no app for that yet, but it is possible to do so programmatically without rooting, that would work, too.

Thanks


问:
How to make changes done through `adb settings put` persist through device reboots?
The specific changes I attempted were to a database entry following instructions in this question: Possible to turn on Airplane mode with WiFi on only?

The changes to either row would take effect immediately but are reset following a reboot. The updated rows retain their row-id but revert to the previous/default data following reboot.

the exact command I used was:

```<code>adb shell settings put global airplane_mode_radios  "cell,bluetooth,nfc,wimax"
</code>```

The following command would result in an exception where it is unable to find the key:

```<code>adb shell content update --uri content://settings/global --bind value:s:'cell,bluetooth,nfc,wimax' --where "name='airplane_mode_radios'"
</code>```

I'm using Android 4.2.2 and the latest ADB available as of end of March.


问:
Nexus 5X recovery via fastboot or adb?
Has just crashed and refused to turn on reliably, gets to white google logo and switches off. Occasionally gets to Fastboot menu, but never gets to recovery menu
I suspect battery issue, although I have power cable connected, and was on 70% when it crashed

Erase the current recovery by using fastboot:  fastboot erase recovery
Flash the recovery.img file using fastboot:  fastboot flash recovery recovery.img
Now you've flashed a fresh recovery image to your device. You can do this without losing any data, and if you use a custom recovery like TWRP, these instructions apply as well. I do this all the time when I reload the stock software on my Nexus 6.

Running latest Ubuntu GNU/Linux on laptop
android-tools-adb                                    5.1.1r36+git20160322-0ubun
android-tools-fastboot                               5.1.1r36+git20160322-0ubuntu3

Google LG Nexus 5X, running latest updates.

But isn't showing up as a device I can use by fastboot or adb

```<code>$ lsusb
show one extra device:
Bus 003 Device 005: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode)
</code>```

```
Apr 29 15:04:59 ubuntu1404 kernel: [157627.493587] usb 3-1: new high-speed USB device number 6 using xhci_hcd
Apr 29 15:05:04 ubuntu1404 kernel: [157632.606057] usb 3-1: device descriptor read/64, error -110
Apr 29 15:05:19 ubuntu1404 kernel: [157647.823323] usb 3-1: device descriptor read/64, error -110
Apr 29 15:05:19 ubuntu1404 kernel: [157648.039307] usb 3-1: new high-speed USB device number 7 using xhci_hcd
Apr 29 15:05:25 ubuntu1404 kernel: [157653.151722] usb 3-1: device descriptor read/64, error -110
Apr 29 15:05:35 ubuntu1404 kernel: [157663.392584] usb 3-1: new high-speed USB device number 8 using xhci_hcd
Apr 29 15:05:40 ubuntu1404 kernel: [157668.505031] usb 3-1: device descriptor read/64, error -110
Apr 29 15:05:55 ubuntu1404 kernel: [157683.722224] usb 3-1: device descriptor read/64, error -110
Apr 29 15:05:55 ubuntu1404 kernel: [157683.938212] usb 3-1: new high-speed USB device number 9 using xhci_hcd
Apr 29 15:06:00 ubuntu1404 kernel: [157689.050650] usb 3-1: device descriptor read/64, error -110
Apr 29 15:06:16 ubuntu1404 kernel: [157704.267841] usb 3-1: device descriptor read/64, error -110
Apr 29 15:06:16 ubuntu1404 kernel: [157704.483826] usb 3-1: new high-speed USB device number 10 using xhci_hcd
Apr 29 15:06:21 ubuntu1404 kernel: [157709.500278] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
Apr 29 15:06:26 ubuntu1404 kernel: [157714.716594] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
Apr 29 15:06:26 ubuntu1404 kernel: [157714.920605] usb 3-1: device not accepting address 10, error -62
Apr 29 15:06:26 ubuntu1404 kernel: [157715.032581] usb 3-1: new high-speed USB device number 11 using xhci_hcd
Apr 29 15:06:31 ubuntu1404 kernel: [157720.045014] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
Apr 29 15:06:37 ubuntu1404 kernel: [157725.261441] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
Apr 29 15:06:37 ubuntu1404 kernel: [157725.465430] usb 3-1: device not accepting address 11, error -62
Apr 29 15:06:37 ubuntu1404 kernel: [157725.465488] usb usb3-port1: unable to enumerate USB device

Apr 29 15:22:20 ubuntu1404 kernel: [158668.754673] usb 3-1: new high-speed USB device number 12 using xhci_hcd
Apr 29 15:22:20 ubuntu1404 kernel: [158668.885855] usb 3-1: New USB device found, idVendor=05c6, idProduct=9008
Apr 29 15:22:20 ubuntu1404 kernel: [158668.885862] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Apr 29 15:22:20 ubuntu1404 kernel: [158668.885865] usb 3-1: Product: QHSUSB__BULK
Apr 29 15:22:20 ubuntu1404 kernel: [158668.885868] usb 3-1: Manufacturer: Qualcomm CDMA Technologies MSM
Apr 29 15:22:20 ubuntu1404 kernel: [158668.887133] qcserial 3-1:1.0: Qualcomm USB modem converter detected
Apr 29 15:22:20 ubuntu1404 kernel: [158668.887354] usb 3-1: Qualcomm USB modem converter now attached to ttyUSB0
Apr 29 15:22:20 ubuntu1404 mtp-probe: checking bus 3, device 12: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-1"
Apr 29 15:22:20 ubuntu1404 mtp-probe: bus: 3, device: 12 was not an MTP device
Apr 29 15:22:22 ubuntu1404 kernel: [158670.847529] usb 3-1: USB disconnect, device number 12
Apr 29 15:22:22 ubuntu1404 kernel: [158670.847868] qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
Apr 29 15:22:22 ubuntu1404 kernel: [158670.847914] qcserial 3-1:1.0: device disconnected
```

Are the flashing red led codes any information? (5) (12) (35)

Any suggestions appreciated!

Title: Nexus 5X recovery via fastboot or adb?


问:
How do I take 2-second long exposures on the Google Pixel?
This post on the Google blog says that the Pixel camera supports shutter speeds up to 2 seconds. But I'm unable to use shutter speeds longer than 0.7 seconds, no matter which app I use — Lightroom, Camera FV-5 and Open Camera.

Do I need to flash the Pixel with a custom build of Android in order to do this?


问:
Unlocking bootloader on Sony Ericsson NEO V
Has anybody managed to use Fastboot on Ubuntu to unlock the Sony Ericsson Neo V? I tried and got the blue led light (bootloader) while connecting the USB. But Fastboot still doesn't recognize the device. I did follow the instructions to check if it was unlockable and yes it is. Is there some compatibility issue between Ubuntu 11.04 and Fastboot??

p.s., I have managed to root the phone using the ADB script I found on xdaforums.


问:
Why does multi-user exist in Android if it doesn't work?

/sdcard -> /storage/sdcard0

/storage/sdcard0 -> /storage/emulated/legacy

/storage/emulated/legacy -> /storage/emulated/0

Based on the above, if all the locations point to the same virtual storage, what's the point in having separate storage locations for each different user?

If /storage/emulated/0,1,2,3,etc. all point to /storage/sdcard0, and saving files in any storage location make it appear in all other locations, how is it possible to have user designated storage if all information is the same for all users?

Or is it not supposed to be designed this way...that every user's storage should be the exact same, but if that were the case, then why does having multiple folders with different numbers for multiple users exist? Am I missing something here? Am I missing some key piece of information? Why allocate folders for a specific user if they all point to the same location and contain the same exact information?


问:
Stuck notification on LG 's Phone app "new voice mail"
My phone's an LG G4 on Android 6. I've received a new vocal message which I've read already. The notification won't go away.

I can't force close the app as it's a system app ( "Phone" )
I can't disable notifications on this app for the same reason.

When I reboot the phone, the notification show up again...

Any idea would be appreciated. Thx


问:
Having trouble with voice command to navigate to contact address
When I select a contact, then select its address, Maps opens. Then I can navigate to it with the Google navigation app.

However, if I try doing this directly with the system-wide speech input, this is not working. The input is interpreted correctly (correct contact and Google navigation opens), but then the address of the contact is not found.


问:
ANZ goMoney AU not alllowing developer options to be enabled
I have recently purchased a Nexus 6, to install Kali NetHunter.

After installing ANZ goMoney AU, It opens, and prompts me with:

We noticed that you have some Developer Options turned on under your Settings.

This can cause issues with ANZ goMoney.

To continue, please turn them off and restart the app.

EXIT

I was wondering if there was any way to bypass this screen, as I use developer options for a lot of things.


问:
How to install an application manually in the /data
My problem is that I want to be able to install an application manually without the help of the android system, ie I want to be able to install an application by copying the apk, dex and data files in the data directories, and be able to present the application as installed. Because I copied the files previously and the application does not appear as installed, if not until I restart the device.

The purpose of my question is to learn more about the system I use the most famous Android

If you know of any way to help me, I'll be happy to hear from you. Thank you


问:
Is it impossible to pull a database file from non debuggable app in a non rooted device?
Here's what I tried:

adb shell "run-as my.package ..." doesn't work because the app was installed without the android:debuggable option.

adb backup doesn't work (it produces an empty file)

I can't use the app to copy the database to sdcard, since I'm using a new computer which has a different signature (then, AndroidStudio asks to reinstall the app)

Do I have any option to extract the database?


问:
What is the reason why partial amounts of files show up while connected via MTP?
This question is in reference to an ongoing issues brought up in the past about being able to see all files on a device through an file manager app, but only a partial amount showing in Windows Explorer while a device is connected to a PC via MTP.

Below are some recollections of this issues:

Not all files are visible over MTP

SD card not showing files when connected to pc

Nexus 4 not showing files via MTP

As for why folders and files do not show up in Windows Explorer while connected via MTP, it’s not exactly known what the cause or reason is. Kevin Panko in link #3 said that "The MTP cache gets out of date...", but I'm not sure if this is correct since there was no further explanation.

My hypothesis is that if you create content in any other storage location other than user designated storage, it gets transferred to the user designated location (e.g., /sdcard --> /storage/emulated/0), and does not directly communicate with Media Storage, avoiding the process of being added to Media Storage (a system app that contains the current state of the current user's storage). Thus, I believe Media Storage is programmed to only collect changes that occur when they are made directly in the user designated storage, or /storage/emulated/0 for example.

The Media Storage app dictates what is being shown in Windows Explorer. If you clear the Media Storage app, a user won't be able to see any content at all when plugging in their device into a PC. So therefore, if it never gets added to Media Storage it will never show up on a PC via MTP.

To add to this hypothesis, when you create a file in user designated storage, /storage/emulated/0 for example, that file will show up on a PC through MTP instantaneously, even while simultaneously connected via MTP. This does not occur when created in any other storage location.

What is causing this issue?


问:
What are trust agents and why should I trust "Profiles trust provider"?
I don't know if this is a new thing in Android 7, or if I've just never came across it before.  I suspsect this is a new thing.  I am using OctOS M, which is based on LegacyOS, the new name of CyanogenMOD.

In figuring out how to turn off Smart Lock, some new whiz bang thing that reduces your phone security in the name of conveinance, I came across another trust agent called "Profiles Trust Provider". Searching the web gives me a couple of Android dev pages, which are never helpful to explain anything (They restate the obvious ususally. It's pretty bad when you don't know anything and the man page only restates the obvious [to someone who doesn't know anything]).

Does anyone know what this is, why I should trust it, what the feature does and if it does what it claims?


问:
Disable WiFi-discovery notifications on the LG G6
How does one turn off "WiFi Network Available" notifications on the LG G6? It's a mite spammy in cities.

I could turn off notifications for the app entirely, but that would hide "sign in" and "incorrect password" notifications.

This question is LG G6 specific because its interface does not admit the more general solution.


问:
Algorithms used in Android's Accessibility Colour Correction
Since Android 5.0 there is an accessibility feature that allows the recolouring of everything that is displayed called Colour Correction. This is meant to help people with impaired colour vision.

But how exactly are those options remapping the colours?
Is there any information about which algorithms are used?


问:
Listen to YouTube on Firefox in the background
On some pages I found the advice, that I could let YouTube videos play in the background when using Firefox for Android. And it works with the video in the article, but not on YouTube.com. Unlike suggested in this reddit post, it also happens on Firefox beta and is not connected to the bug referenced there. </p>

<p>Is this a restriction by YouTube and if, is there a way to circumvent it? </p>


问:
Can't connect bluetooth -- invalid pin or passkey (Android 6.0)
When I go to connect an Android 6.0 phone to either of the instant pot or car, I receive an error message that the device can't connect, because it has an invalid pin or passkey.  How do I work around this fairly glaring bug?  Is there a file I can edit?

Back when my phone ran a slightly older version of Cyanogenmod, it worked on both of these devices.  So, it's not the phone itself.  Also, I have a second Android 6.0 phone that I've tried to connect to the instant pot, and it has the same issue.  Thus, I am fairly certain it is a bug with the operating system -- just need to find a work-around for the bug.


问:
USB OTG Hardware support on Galaxy Grand Duos
Does Galaxy Grand Duos have hardware support for OTG ? Is it just restricted by software or is hardware support also lacking.

I am little bit confused after reading this post.


问:
how can lock or block some SIM carrier on android 4.1.2
have here in my country to types of SIM cards on the carriers, the first is open to the all networks... internet, sms, calls... and a second is all close  data , only to call

how can i do to close in a android 4.1.2 on a samsung  gt s6310 to by only read a second SIM card and block the first?

thanks !!


问:
Media volume is disabled when 'Do not disturb' is active
Since I factory reset my Samsung S7 (SM-G930A, Android 7.0), the media volume has become coupled to the 'Do not disturb' state. When 'Do not disturb' is active, either from the toggle or by schedule, the media volume setting becomes greyed out, the slider is fixed where it was, and no media sound can be heard. Are there others experiencing this behavior? Any explanations?


问:
Issues with incoming MMS getting stuck
I have an issue with MMS messages getting stuck.
I'm not sure if this is an Android issue (standard, custom rom, rooted, ect) or a carrier one.

I'll have backed up MMS messages with no indication, but if I toggle data off for ~10 seconds and then back on, they ALL come in. Sometimes over a day's worth. I've done this and gotten bombarded with upwards of 30+ pictures, group chat, etc all of which had no indication that they were there at all.

I'm on a 6.0.1 CM based Rom.

I'm rooted (systemless with Magisk)

I have Xposed installed

My phone is a Oneplus 3T

Title: Issues with incoming MMS getting stuck