问:
No service in the UK, what baseband modem firmware should I try and flash?
I have a Galaxy S3 running CyanogenMod 13 and I had always assumed it was locked or something because I could never get any service in the UK. When I went abroad I noticed I could get roaming service.

I came across this video which seems to describe my problem and a solution to it. I notice though that the baseband firmware download they suggest (I9300XXUGMK6) is an Irish one according to Sammobile.com. I9300XXUGMK6 is actually the baseband version my phone reports now. Is the problem maybe that I am running and Irish baseband version in the UK or does it not work like that?

EDIT: So I found out that I9300XXUGMK6 is called PDA and describes the device I have and there are a few different versions available for that device. The most logical baseband firmware for me then would be the I9300XXUGMK6_I9300O2UGNA1_O2U.zip since I am on GiffGaff which uses the O2 network. But I can't actually find this for download anywhere though.


问:
Stuck with stock rom
I have a galaxy s5 g900f and here is my problem i can't flash any custom rom i tried twrp cwm philz edition and the problem is the same i get stuck at* patching system image unconditionally at the very beginning of the blue line i tried with resurrection remix, slimrom, and other ROMs and when trying MIUI 8 i get an error couldn't mount system rw
Itried with adb sideload get stucked at 45%.
I e2fsck -y /dev/block/mmcblk0p23 wich is my system partition and fixed so many error but the problem stay the same ... i can flash a recovery or a kernel with no problem with TWRP the problem as i think when dealing with the system partition .. so im stuck with a stock rom that i flashed with odin btw who works great .. so is it my system partition messed up or the gpt table isnt right or is there a way to flash custom rom using odin</p>

ContentLicense: CC BY-SA 3.0

Title: Stuck with stock rom


问:
All I need to know about image and video resolution, size and quality in my smartphone
About Images

My android smartphone captures images of resolution 4160 x 3120 px (horizontally) with its 13 megapixel rear camera. The image size is usually around 5 MB which is obviously hard to upload on Internet and share it via Whatsapp especially if we talk about slow Internet connection. Moreover it consumes a lot of precious storage space in computer, mobile, SD card etc.

Therefore, I resize images of above resolution to 1366 x 1025 px in my computer using some image editing software. The resized image becomes of size around 400 KB which is very much smaller than that of original image. But will it reduce image quality as well?

Additionally I am wondering about one more thing - What If I shoot a picture initially with resolution 1366 x 1025 px? Will it's quality be the same to the computer resized version of bigger resolution image? To make you guys more clear, here it is:

```<code>Original (JPEG)         Resized (JPEG)     Quality                                      Size

4160 x 3120 px  =>      1366 x 1025 px      Low/High/Same?                              400 KB

1366 x 1025 px  =>      No Resize           Low/High/Same to above resized version?     ?
</code>```

About Video

The 10 seconds duration video recorded in SD (720 x 480 px) format is around 3 MB.

The 10 seconds duration video recorded in HD (1280 x 720 px) format is around 18 MB.

The 10 seconds duration video recorded in Full HD (1920 x 1080 px) format is around 25 MB.

The 10 seconds duration video recorded in 4K (3840 x 2160 px) format is around 55 MB.

Same situation arises for uploading and sharing video over internet. Also the storage problem too. So if I compress 4K or Full HD video into HD format then will it reduce video quality? Also how much HD compressed version of 4K and Full HD formats will differ in terms of quality as compared to original HD version without any compression?


问:
Unresponsive when network is on, ok if off
Since a few weeks, my phone is behaving strangely, it works OK in airplane mode but when the network is on i get several of the following symptoms:

the phone becomes partially unresponsive, i experience freezes, lags

apps like twitter often crash and are very slow

the phone reboots by itself

the battery usage becomes very high (emptying a fully charged phone within the hour)

the phone overheats

I have also noticed that when networking is on the battery charging indicator is stopping and starting alternatively (like 1-2 secs work, 1-2 secs frozen). This does not happen when airplane mode is on (indicator progress is fluid).

How do i troubleshoot this problem? Are there some diag tools i could use or logs i could check?

What i have tried so far:

install all app updates (but i have trouble doing that as google play works erraticaly)

reset cache & davik partitions from the cm menu

clear the cache of twitter & google play

delete google play history

My combo:

Galaxy Note 1 - N7000

CyanogenMod 11-20160815-NIGHTLY-n7000

Android 4.4.4

Band version: N7000XXLT3

EDIT: This is not linked to a ROM update (last ROM update was 9 months ago and the trouble started about 1 month ago).


问:
How can I completely remove deleted photos/videos?
I have an LG G5.  Last week I recorded a 20 minute video using my camera phone.  The file size was ~3 Gb. I don't use the SD card, so the video saved in the gallery.   I saved the video to Google drive and deleted it from my gallery.  Even after restarting my phone, and doing a soft reset by removing the battery, the 3Gb of storage has not been recovered.  My phone still thinks the video is there in internal storage, although its no longer visible in the gallery.
 I had a similar  problem once before, and was able to 'explore' the internal storage through settings --> storage, and I found a hidden trash folder that I could empty to finally free up the space.  That was only 3 months ago.  Now, when I try the same trick and explore the internal storage, I can neither find nor remember where that hidden trash bin was before.  Any thoughts???  Thank you!!!</p>


问:
is it possible to use a drawing tablet with my phone?
i have a Huion 420 tablet and a Samsung J7 Prime.
i bought an adapter and connected everything properly but nothing shows up on my screen when i use my pen on the tablet
thanks!</p>


问:
Constantly showing a popup - "unfortunately, YouTube has stopped"
I have an HTC desire 826 dual sim smartphone(Android 5.1) and a few days ago it showed a pop-up with a message saying something like "Youtube app might harm your device". So I have uninstalled youtube app (don't remember whether I did this by clicking a button in the popup or not). after that, it worked fine. but today for some reason, I have restarted my phone, and after the boot process, it shows a popup with "unfortunately, YouTube has stopped". It appeared instantly again when I click the OK button and cannot get focus to anything on the screen.(apart from 1-2 seconds)

I tried to resolve this by clearing the cache partition, reboot to the bootloader options in recovery mode, but they were gone nowhere.
Could anyone have an idea how to get rid of this ?


问:
Hotspot not working after root attempt
I have a Motorola Moto G 3-TE with Android 6.0.1, Few weeks back I thought of rooting it and tried several methods. I tried using Kingroot app from my phone and also tried KingoRoot from PC. My fault was that my pc was connected to the same device's Hotspot. Although my phone restarted few times, the root attempt failed and unfortunately my phone's Hotspot stopped working. Everything else is working fine. I just want a way to repair my phone's Mobile Hotspot. Please Help

Title: Hotspot not working after root attempt


问:
Why does a ifconfig command results in "Network is unreachable" on Android?
First, the sole purpose of the following steps is reproducing a problem in a way as simple as possible.
An Android device has an Ethernet port, and is connected to a router (IP: 192.168.1.1) via an Ethernet cable. A device on the network has IP: 192.168.1.163

Initially, shell command "ifconfig eth0" produces the following:

```<code>eth0: ip 169.254.0.125 mask 0.0.0.0 flags [up broadcast running multicast]
</code>```

Shell command "ping 192.168.1.163" generates the following:

```<code>64 bytes from 192.168.1.163: icmp_seq=1 ttl=64 time=3.00 ms
</code>```

After running shell command "ifconfig eth0 ip 192.168.1.166 netmask 255.255.255.0", shell command "ifconfig eth0" generates the following:

```<code>eth0: ip 192.168.1.166 mask 255.255.255.0 flags [up broadcast running multicast]
</code>```

Shell command "ping 192.168.1.163" generates the following:

```<code>64 bytes from 192.168.1.163: icmp_seq=2 ttl=64 time=2.18 ms
</code>```

Everything is as expected so far.  The following step will start the problem. After using shell command "ifconfig eth0 ip 169.254.0.125 netmask 0.0.0.0" to restore the initial settings, "ifconfig eth0" generates the following:

```<code>eth0: ip 169.254.0.125 mask 0.0.0.0 flags [up broadcast running multicast]
</code>```

Please note it looks exactly the same as the initial settings. However "poing 192.168.1.163" generates the following:

```<code>connect: Network is unreachable
</code>```

if Android Settings is used to do the configuration as shown by the following screenshot, everything is back to normal and the ping command will generate normal responses.

In summary, if ifconfig is used to the change the Ethernet interface's IP and mask,using it again to restore the initial link-local IP will result in network connection problems. Could anyone shed some light on this and offer a tip on how to restore the initial settings by using shell commands?


问:
Unable to connect to camera AVD
I am trying to use my laptop's webcam in my android virtual device. however everytime I start the device I get error message as -

```<code>emulator: ERROR: cmd_camera_device_start_capturing: Unable to set video format: 0
</code>```

My config.ini file for the device looks like -

```<code>hw.camera=yes
hw.camera.back=webcam0
hw.camera.front=webcam0
</code>```

First line I added after reading upon some blog, however it doesn't work without first line also.

PS: Webcam flashes couple of times and them it gives this error. Although the android device loads up but camera app doesn't function mentioning "Can't connect to camera service".

Also... simulated camera works.

Any suggestions.

EDIT
Already done suggested changes as per https://stackoverflow.com/questions/30850162/android-emulator-not-using-webcam-in-android-studio still no success.

Title: Unable to connect to camera AVD


问:
SD card unexpectedly removed
Here is my issue. I was moving data (photos and videos) from my smartphone's inner memory over to my Micro SD card with 16 GB of memory, a close-to-daily process in which I've never encountered any difficulties, when, without any warning, a notification signalling "SD card unexpectedly removed" appeared. After that, all the data previously stored on my SD card was inaccessibile from my phone, everything just disappeared, from Gallery content, to music, to apps. I tried to restart my phone, which is a Samsung Galaxy A3 from 2015, multiple consecutive times, but nothing changed, except that after a few attempts the notification had changed to "Preparation of SD card. Checking for errors". I also tried to access the SD card by connecting the phone to my laptop via USB, but it led to nothing. It's as though the SD card isn't in fact inside its socket, although I took it out several times to clean it up and check for cracks or any type of damage, which is not the case.
What should I do? Is there any way I can retrieve my data, even with the aid of a programme?
I apologise in advance if the notifications texts I've provided do not correspond precisely to the real ones, as my phone's system's language is not English.
Thank you for your availability.</p>

OwnerDisplayName: Alex

Title: SD card unexpectedly removed


问:
Phone restarts when plugged ito PC
When i plug in my phone to my pc, my pc installs the drivers then my phone just restarts. And after that, my phone screen won't turn off</p>

Title: Phone restarts when plugged ito PC


问:
Trigger task by pressing home button when on home screen
I am trying to create a profile where I can add an extra function to my home button when on the home screen. But I can't get Tasker to react to home button press. I have tried both AutoInput and TouchTask, but none of them give any reaction. As I am using a Huawei Mate 9 Pro, which has a fingerprint scanner as a home button (no physical press, just touch/finger print), I have also tried both Fingerprint Scanner Tools and Fingerprint Quick Actions. They both work, momentarily, but after a short while the stock functionality takes over.

Does anybody know of a way to get tasker to react to home button/fingerpress press, only when on home screen, given the above limitations?


问:
Galaxy s6 edge does not connect to mobile network when leaving WLAN after upgrade to Android 7
My Samsung Galaxy s6 edge does not get internet access via mobile networks when leaving the WLAN area.

After going into offline mode and then online mode again, everything is fine, but until then, there is no way I could use the mobile networks.

How can I fix this?


问:
Using a desktop machine to bridge over USB from an Android phone to the LAN (OSI 2/3 *not* port mapping)
This is related to other questions about making an IP connection over USB from Android to Windows (SSH, ADB forward, etc), but it goes further, and I can't find any "howtos" or other information about it.

What I want is to fully bridge my phone to the LAN, meaning OSI level 2/broadcast traffic not just level 3+4/IP traffic, across USB not using Wifi. It's probably not that hard (if you know how).

The LAN is an ordinary straightforward home lab LAN (Windows 8.1 clients, test box used for lab work running pfSense (FreeBSD) with a couple of spare NICs that can be bridged as a virtual managed switch, and a 16 port switch linking them all). The phone is rooted (Samsung Galaxy S7, Sony ZX, or similar) running LineageOS 14.1 (Android 7.1).

I've figured there are two possible approaches, but I don't know how to do either:

Tunnel Ethernet over USB to a Windows/FreeBSD box (using ADB?), then use some magic at the Windows/Linux end, so the USB link is 'seen' as Ethernet and virtual-bridged to the LAN connection. (Windows and *nix should both be able to do that "out of the box").

Buy a reputable USB-to-RJ45 dongle/adapter which has an Android driver available, so Android just sees a USB network device;

I'd prefer only to use "standard" OS functions and "well known" software (SSHD? ADB?) and a bare USB cable, because most phones couldn't power a USB adapter at all or for long time periods and because it's one less adapter to buy and one less compatibility issue. What I don't want is "buy specialised App X off Google Play" :)

On the USB-to-LAN side, both pfSense and Windows can probably bridge the incoming USB to the LAN "out of the box". pfSense handles bridging in its GUI once the USB port is made to appear as an Ethernet connection, and I'd hope that Windows 8.1/10's built-in network sharing can do similar. But I don't really know, it's my guess. I'd prefer to use a Windows machine to bridge to the LAN, because it gives me easier access.

So I have a sense what a solution should look like, but I don't know how to do any of these, or what config will be needed at the Android or Windows/FreeBSD ends.  Most hits about Android to LAN over USB only discusses a two device connection usually via TCP (not ICMP/ARP/STP/other broadcast protocols), only Android to a desktop PC (not LAN), often only forwarding of a single specific port, and often with well-defined client/server roles for the two endpoints.

It does looks like I should use ADB in some way for the actual IP-over-USB tunnelling bit, but I can't find anything that takes it from there to a complete solution and network bridge for all types of traffic.

Summing up, I want my phone to appear and act like it's directly connected to the wired LAN via its USB connection, without using Wifi and ideally only using standard OS capabilities and "well known apps" and a Windows PC (or at worst, only apps which provide an easy GUI to make CLI functionality easier). I'd like not to have to buy a hardware USB-to-RJ45 adapter for the phone, but if I have to get one then it's got to have a mainstream NIC/driver likely to work with future Android and "known reliable".

Is there a simple way to do it that just uses a USB cable and not a USB-Ethernet dongle?


问:
Share phone's internet over existinf wifi network
i want to share my phone's 3g over my existing wifi network. NOT hotspot ( because phone's wifi signal is too weak). is this possible?</p>


问:
Blacklisted number still able to call me under Marshmallow
Can someone explain me following situation:

How can a blacklisted phone number appear in my incoming calls log which clearly proves that it was calling me?

I have added this particular number to my blacklist (which is confirmed by having Remove... instead of Add... option in long-press context menu) and yet I'm still receiving calls from this number.

Is this a bug in Marshmallow of am I missing something obvious about blacklisting numbers feature in Android?


问:
Return to previous android version
Some days ago I updated my phone to marshmallow, but after the discovery of some bugs I would return back to the previous version.
The problem is that when the phone start flashing the old android version something goes wrong and the installation aborts.
So, is it possible that this android version doesn't permit me to return back to previous ones?</p>

Title: Return to previous android version


问:
Is there a way to force authenticated apps to prompt for the password after every screen lock?
I have a password manager set-up and it's really easy to login using it.  I would prefer if certain (or all) authenticated apps required re-entering of credentials after the device has been locked.  Is there a way to accomplish this (or some similar feature/behavior that can be enabled)?</p>


问:
WhatsApp notifications - Notification Bar - J3
Samsung J3 - Android 5.1.1 (Lollipop)
Regarding WhatsApp notifications....On my previous phone (Samsung Galaxy Trend) When a new WhatsApp message comes through....

The phone vibrates

A number "1" shows up on the WhatsApp icon

The little WhatsApp icon shows up in the top left hand corner of the phone.

This configuration is exactly how I wanted it...

I seem to be having some trouble replicating this exact configuration on my new phone (J3).

Can anyone assist?

Thanks


问:
Weird Facebook Bug on Galaxy S6 Edge
Does anyone experience this problem?

The videos on posts are floating bellow from where they should be, covering the comments count:

There is an weird space left there, it happens for all posts with embedded videos.

If I scroll down further the video disappears and the comments show up:

I've tried to uninstall ( can't really because facebook comes preinstaled, can only deactivate), cleaning the app data and wipe the cache partition, but no success.

Title: Weird Facebook Bug on Galaxy S6 Edge


问:
Wifi not working after rooting
I have the Samsung galaxy A5 2016 (SM-A510F) and recently upgraded it with the russian nougat firmware (i'm from Europe). Everything worked (even the wifi and mobile data). Later I rooted my phone and put TWRP on my phone (the same zips I've used earlier on android 6.0 wich worked perfectly). I've succesfully gained root acces on 7.0 and the recovery also works. The only thing that stopped working is my wifi after the TWRP and root (I did them at the same time so I don't know what caused it)

Thanks,
Niels

Title: Wifi not working after rooting


问:
Android Debug Bridge (adb) backup/restore
I'm a bit confused with output bellow and was hoping someone can help me to decipher it for me)

```<code>backup/restore:
 backup [-f FILE] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all] [-system|-nosystem] [PACKAGE...]
     write an archive of the device's data to FILE [default=backup.adb]
     package list optional if -all/-shared are supplied
     -apk/-noapk: do/don't back up .apk files (default -noapk)
     -obb/-noobb: do/don't back up .obb files (default -noobb)
     -shared|-noshared: do/don't back up shared storage (default -noshared)
     -all: back up all installed applications
     -system|-nosystem: include system apps in -all (default -system)
 restore FILE             restore device contents from FILE
</code>```

My goal is very simple here; I'm about to perform factory reset and would like to take a backup of my phone, so I can restore my phone as it is now (before factory reset) (what is .obb files??)

Would following help me accomplish my goal or do I need something else like -all?

adb backup -f 05102017 -shared -nosystem

Please advise.


问:
Is there a way to get an android image without root?
I wanna get a raw image from my Android Phone (5.0) to a PC using dd command, but i don't want to root it. So, i'm looking for a way for do it. Sorry about my english and  thanks in advance for your time.</p>


问:
How to add/delete languages from android phone?

Possible Duplicate:

  How do I add a new language?

I want to deleted some installed languages from android phone and also add some languages to android phone. How this can be done?

(android 2.3.6)


问:
Nougat: force to enter PIN and disable fingerprint every hour or every 10th time
Is it possible to set Android 7 Nougat to ask for the PIN every hour or every 10th time, when using fingerprint to unlock a phone? The fingerprint unlocking is very convenient, but it seems not that safe, reading the following article:

That Fingerprint Sensor on Your Phone Is Not as Safe as You Think


问:
android shell /system/bin/sh subshell not working
The script

```<code>#!/system/bin/sh
/system/bin/busybox find .
f=$(/system/bin/busybox find .)
echo $f
for f in $(/system/bin/busybox find .)
do
 echo $f
done
</code>```

does not work as expected in my environment.
I get:

```<code>.
./loop.sh
</code>```

while

```<code>bash loop.sh
.
./loop.sh
. ./loop.sh
.
./loop.sh
</code>```

is the result for the equivalent on a linux box:

```<code>#!/bin/sh
find .
f=$(find .)
echo $f
for f in $(find .)
do
 echo $f
done
</code>```

What can I do about this?

The environment is:

```<code>getprop ro.build.version.sdk
22
getprop ro.build.version.release
5.1.1
busybox
BusyBox v1.22.1 (2014-09-16 09:27:06 CST) multi-call binary.
busybox uname -a
Linux localhost 3.14.0 #68 SMP PREEMPT Wed Jan 18 10:27:06 CST 2017 i686 GNU/Linux
</code>```


问:
What specifies the maximum supported sdcard capacity of a mobile phone?
I often see this in mobile phone specifications: "microsd card supported, up to 32gb"

Is this limit really real?

Does it depend on hardware or software?

How to know for sure (e.g. using a software) the limit?

What happens if inserted a card that exeeds the limit?


问:
Recover files from Galaxy S5 Internal with ADB, Ubuntu and DD
My parents went on a once-in-a-lifetime trip to Ireland last spring. They took most of the photos with my dad's Galaxy S5. They were stored on internal storage, and not an SD card. The photos were being backed up into Google, synced with his Gmail / Google Photos account.

Late last summer, unfortunately (and you know the rest of the story), as he was clearing photos off of his phone, he accidentally deleted the photos, and wound up wiping them from Google Drive as well.

He passed away this past winter.

A couple weeks ago, I did my first successful data recovery job on a microSD card (with photorec) for a client who had lost photos when his S6 was reset (I've done several data recovery jobs for various clients using photorec and other Linux utilities, but this was the first time I attempted a job on a microSD card that came from a phone).

That got me thinking: Could I, conceivably, attempt to recover my dad's photos from his internal storage?

I have the same phone (also a Galaxy S5), and live 5 hours away from my mom, so I'm doing some testing on my phone now.

Unlike my dad's phone, my phone is encrypted. Other than that, there shouldn't be any difference.

After some research, I've enabled Developer Options on my phone, turned on USB Logging, installed ADB onto my Ubuntu machine, and have given permission to the phone that my computer can connect to it over adb.

I then cd'd into where I want the backup to be saved on my computer, ran adb backup full-backup.adb -apk -all, and hoped for the best. Because my phone is encrypted, I was forced to enter in a password for the backup itself to be encrypted.

The backup "completed" almost immediately (the phone said "backup finished"), indicating to me that no backup was taken at all. The file name I see on the computer is "backup.ad" and NOT "backup.adb".

Questions

Why did my phone indicate that the backup finished when it clearly did not? How can I continue to troubleshoot this?

If I am able to eventually get the backup, how can I then go about extracting the data from the adb backup in such a way that photorec can read the data? I am hoping that there's a way to mount the image (since photorec requires an actual "device" (or image) and won't run on individual folders).

Any better ideas as to how I might be able to recover these photos? I do understand that, since so much time has passed, these photos may not be recoverable. But it's worth a shot! I exhausted, a long time ago, all other possibilities (I scrutinized my dad's phone and his account in Google many times over).


问:
SMS/Call log backup utilities not saving everything
I have had a very frustrating experience in swapping over from one Android to another. As I had done with my previous transfer many years back, got the phone connected to the PC with developer mode and used ADB to take an -all backup, but upon restoring it on my new phone my ordeal started.

First Firefox on the new phone didn't have any of my open tabs, nor history, and after a bit of research, found that it has been built with the flag android:allowBackup="false" set solving the corruption that I understand can occur when Android restores Firefox data from the cloud, but also disables local ADB backups. I could find no other way to backup not only currently open pages in tabs, but also the history of those tabs - Firefox sync only recovers current page, not that tab's history.

Several other problems, some also having that same android:allowBackup="false" flag set, have had their data been copied at great time expense for either finding a solution, or manually copying the data.

Now I have struck a wall when trying to backup ALL call logs and SMS messages. Find below details of the discrepancies:

On Source Device (Samsung SM N915A):

20 Conversations in "Messages" app (could find no way to see how many individual messages this includes)

204 SMS's reported as being backed up via SMS Backup & Restore

529 call details in "Contacts" app (which launches when I click the phone icon on the home screen), found by clicking the "Select" option in the ... dropdown and clicking the all button

487 call details reported as being backed up via SMS Backup & Restore

On Destination Device (Samsung SM G955U):

204 SMS's showing in SMS Backup & Restore's backup of old phone

17 Conversations in "Messages" App (after restore using above app and backup)

487 call details showing in SMS Backup & Restore's backup of old phone

363 call details in "Phone" App (after restore using above app and backup)

I have also tried SMS Backup, Super Backup, and Helium all with varying (by not complete) numbers of SMS's/Call details claiming as being on the source device and then restored on the destination device. Still further other apps have at least one commentor saying that MMS/Advanced messages are not saved using that app. I have not tried to figure out whether all the messages missing from the backup and what then gets restored are either of these, but at least the first few I looked at didn't seem to be. Regardless...

...Does anybody know of a way to get ALL of the SMS's and Call Details off the old phone?

Footnote - Yes, I am seriously considering rooting the new phone before I accumulate any more data that I will need to deal with upon the next switch - Why phone manufacturers didn't allow, but not make obvious, users to be able to elevate themselves to root is well beyond me!


问:
25% battery warning popup
I know this is a duplicate of past questions... But I've tried the suggestion in the first question and it didn't work. And I can't reply to the initial post, so I have to make a duplicate.
My power saver settings are off. And the popup still pops up.

Title: 25% battery warning popup


问:
Terminal emulator of android
I know that android terminal is basically a Linux shell...but how to install Linux based softwares like gcc,vim, and also other CLI Linux softwares??

I don't want to install termux or other softwares. I want to make my terminal emulator as those softwares like termux

Title: Terminal emulator of android


问:
How is the new "project Treble" going to android make update easier?
https://arstechnica.com/gadgets/2017/05/google-hopes-to-fix-android-updates-no-really-with-project-treble/

It might seem very idiotic on my part not to try to google this but this seems interesting and I am in a new territory here. How are Silicon manufacture and device maker customizing android dessert release and board support package respectively? .What is Phone SKU?


问:
Error 7 while installing Lineageos on Zenfone 2 Z00A
I have tried a first install of Lineageos on an Asus Zenfone 2 Z00A.

I have now reformatted all data, done a factory reset and wiped everything  but always getting error 7 in zip install.

I have twrp-3.0.2-0-Z00A.img, lineage 14.1-20170512-nightly-Z00A-signed.zip and open_gapps-z86-7.1-mini-20170513.zip.

How can I overcome this problem?


问:
Make call remotely from one phone through bluetooth using other phone?
I have two mobile phones:

Samsung Galaxy S3 i9305 with SIM card

Samsung Galaxy Note 3 N9005

I would like to

connect them with Bluetooth,

start my phone calls from Samsung Galaxy Note 3 remotely through Bluetooth,

the voice should go through Bluetooth to Samsung Galaxy S3, using its SIM card to make the phone call.

There is a remote Bluetooth sim solution named rSAP (Bluetooth Remote SIM Access Profile), which is used to remotely connect to car mobile.

http://www.android-rsap.com/bluetooth-sim-access-profile.html

But the developer of the app said, it will not work for the task I need:

I don't think you will find a solution for your use case. It may be
  possible to do it by using the "Handsfree" Bluetooth profile but I
  doubt that the Android programming interfaces make a Handsfree client
  possible. You will most probably have to create your own Android
  firmware, e.g. based on LineageOS.

Is this possible to solve in some other way?

ContentLicense: CC BY-SA 4.0


问:
Install OS on Galaxy S4 w/ broken screen
I have an Samsung Galaxy S4 with a broken screen (no touch input and no visual output); it's been sitting in my closet for months, but it still charges & boots. Now, I want to put it to good use by installing a new OS (e.g. Ubuntu and/or Android) and turning it into a server on my home network (the battery would act as a convenient UPS). However, since the screen is broken I can't access any menus and can't give it any input.

Is there a way to access this phone to perform a fresh OS install (e.g. via USB)?

Note: This question was originally posted on SuperUser, but migrated here because it was off-topic for that community.


问:
Galaxy Note 4 screen problem?
Recently I got a note 4 and when i turn on the screen, it has these orange faded pictures, and i'm guessing the last owner played candy crush while burning the phone?

Does it have a reset option? Or do I have to replace the LCD or the screen?

EDIT: Added screenshot requested by Rahul Gopi:

Look very closely to the screen, not my bedsheets XD

Title: Galaxy Note 4 screen problem?


问:
How to give private numbers a recorded message
Android lets me block private numbers, but some might be genuine callers trying to get through without realising they are calling from a private number.

How can I set Android (or an app) to give a recorded voice message to private numbers?

The recorded message file can be made using Google text to speech. It would be:

(Male voice) Sorry, the number you have called does not accept calls from private numbers. (Female Voice) Please redial without withholding your number.


问:
How to run Windows 10 in a virtual box on an Android phone?
I use my phone for communications and work on the go. I use a windows 10 tablet connected to external mouse/keyboard and monitor. Many programs such as email and contacts etc., are duplicated on each hardware.

Is it likely to be possible to run Windows 10 in a virtual box on an Android device, - so I can still use the Android phone for communication and emulated Windows 10 with the external monitor/keyboard for desktop use at the same time?

Virtual box, I mean something like Oracle’s Virtual Machine which lets you run other operating systems in a window on top of the main operating system.


问:
Connect one Android device with two bluetooth speakers simultaneously
I was wondering if it's possible to connect a single Android device with one bluetooth chips inside to two (or more) bluetooth speakers simultaneously, and if the answer is affirmative, every type of speakers or some models  in particular?
Thanks for the answers</p>


问:
AVD with custom userdata.img doesn't boot
I have been trying to emulate a real android device using AVD by replacing the sdcard (sdcard.img) and userdata (userdata.img) pulled from my device.

Xiaomi Redmi 1S

  Android 4.4.2

Only replacing the sdcard causes no problems. However, after replacing the userdata (even with a stock sdcard), the AVD fails to mount the /data partition (according to the kernel logs (-show-kernel), as a result of which the AVD never boots.

The userdata image is quite big (5.9G), and I have used a sufficient partition size (with -partition-size 7168).

Pulling (with adb pull) /dev/block/mtdblock1 (which is supposed to be mounted as /data) from the live AVD shows that it is actually an empty file (therefore running e2fsck with alternate superblocks has no effect).

However, e2fsck identifies userdata.img as clean, and file userdata.img says that it is a valid ext4 filesystem. In addition, I have mounted and found userdata.img to be a valid partition.

```<code>EXT4-fs (mtdblock0): mounted filesystem with ordered data mode. Opts: barrier=1
end_request: I/O error, dev mtdblock1, sector 2
EXT4-fs (mtdblock1): unable to read superblock
fs_mgr: Running /system/bin/e2fsck on /dev/block/mtdblock1
e2fsck: e2fsck 1.41.14 (22-Dec-2010)
e2fsck: /system/bin/e2fsck: Invalid argument while trying to open /dev/block/mtdblock1
e2fsck:
e2fsck: The superblock could not be read or does not describe a correct ext2
e2fsck: filesystem.  If the device is valid and it really contains an ext2
e2fsck: filesystem (and not swap or ufs or something else), then the superblock
e2fsck: is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck:     e2fsck -b 8193 <device>
e2fsck:
e2fsck: e2fsck terminated by exit(8)
end_request: I/O error, dev mtdblock1, sector 2
EXT4-fs (mtdblock1): unable to read superblock
fs_mgr: Cannot mount filesystem on /dev/block/mtdblock1 at /data
init: fs_mgr_mount_all returned an error
</code>```


问:
Connecting Maru OS to Google account
I have just installed Maru OS on my Nexus 5. When, in phone mode, I attempt to add my google account (for email and calendar access) it prompts me for my email and password. On entering this, it says username or password incorrect.

Back on my laptop, I get an email from Google:

Someone just used your password to try to sign in to your Google account xxxxxxxx@gmail.com, using an application such as an email client or mobile device. Google stopped this sign-in attempt, but you should review your recently used devices:

The IP address shown for this access attempt is geolocated near me, but it not an IP address I recognise. It is not my external IP address. I have since changed my password.

Is it safe to connect Maru to Google accounts? If so, how is it done?

Title: Connecting Maru OS to Google account


问:
Open File - All apps associated with this action have been turned off, blocked, or are not installed
I can open my text editor (QuickEdit Pro) and then, within my text editor, navigate to any file I like and anything (.md or .sh or .pl) will open without trouble. But when I open the default 'My Files' app and navigate to some folder where I tap a .md file, I am faced with a plain white screen that contains nothing but the text in the title of this question. So far, .txt files stand out as being the only ones that can be directly opened in a text editor app.

I have installed 5 other random text editors and this white screen still pops up when I try to open a .md file directly.

What do I have to do to be able to tap a .md file and have it open in a text editor?

If my text editor is not configured to open anything besides .txt files, what would the developer have to do to fix this?

PS I'm running Android 6.0.1 on a Samsung Galaxy S5 Active.


问:
creating a ramfs or using /dev/shm without root privileges in >=android 4.0
My goal is to create a ramfs for the python application I am developing. On *nix this is fairly easy and currently working.

I really want to have a ramfs, as those get not swapped out to
disk, when memory fills up.

I need to have this ramfs created without root access, as I can not
expect all users of my app to root their device.

So far, I can only create a ramfs/tmpfs as root. To circumvent this restriction, I though I could use /dev/shm, create a directory there and chmod/chown it, but my test-android has no /dev/shm but /dev/ashmem, which does not work as I expected:

```<code>#cd /dev/ashmem
sh: cd: /dev/ashmem - not a directory
</code>```

So I can't mkdir, chown, chmod at all. I can under *nix.

Also using tmpfs (which /dev/ashmem supposedly is), files will get swapped out. This is not what I want.

How can I get my application to work with android under the constraint that the used location in memory will never get swapped and is mountable without root privileges?

I need:

a user mounted ramfs (or ramfs-analog)

must not be swapped under any circumstances

needs to support standard filesystem tools like chmod,chown,mkdir,tar

alternativly, (as i am fairly newbish regarding android) is there a way to get root access for editing a fstab-like file in android so I can be onetime-root during install, make the edit and mount as user after the installation process?

I am using python with rapt to package my application to .apk, if this info is helping here.


问:
Script to move files automatically - without root
I would like that when lauching an app / clicking on a desktop button of the phone, this happens automatically on my Android 5 non-rooted phone:

```<code>mv /extSD/DCIM/*.* /extSD/phone/
mv /internal/DCIM/Retrica/*.* /extSD/phone/
mv /extSD/Sounds/*.* /extSD/phone/
</code>```

As these are simple operations (non security-sensitive), is there a solution for a non-rooted phone?


问:
Xiaomi Music Player don't shows songs information
I have a Xiaomi Mi3 running Android 6.0 and there is a problem with the stock music player: some songs don't show the album cover or the artist. Other ones dont' show the name of the album.

What can be the problem? Is there a solution or I have to download another music player?


问:
Disable system update notification?
Simply put, I get this notification at times

I want to stop that.

Please no stuff about "you should do the update". I'd have to unroot, do the update, reroot, restore all my data. It's just not worth it for minor updates.

Title: Disable system update notification?


问:
Backup apps and data using adb
I wanted to backup all the apps and the data of my phone, before I do some hazardous things on it.

I have run:

```<code>./adb backup -f /mydir/backup.file -apk -obb -shared -all -system
</code>```

But the resulting file is ridiculously small (549 bytes), so I know it has not backuped everything.

What I am doing wrong ?

Title: Backup apps and data using adb


问:
How does WhatsApp restore chat database after a factory reset
Consider the following scenario:

The chat database (msgstore.db.crypt12) is encrypted with a key.

The key is lost after performing a factory reset.

I put the db files back in their place (internal storage -> whatsapp
-> databases) and install Whatsapp.

After verification it prompts to restore messages and on confirmation
it restores them.

How does it restore the messages without key?


问:
Galaxy S8 Proximity Sensor
So I just got my galaxy S8, and whenever i'm listening to a voice note it outputs through bottom (loud) the speaker. However, if I bring my phone close to my ear so only I can listen to the voice note through the stop speaker, it still plays on the bottom speaker.

My previous phone had this feature, so every time there was sound playing through the bottom speaker and I brought the phone next to my ear, the output of the sound changed. Does the galaxy s8 has this feature? I've tried to look for it everywhere but I haven't found anything yet.

Title: Galaxy S8 Proximity Sensor


问:
External SD card now says "SD card blank or has unsupported file system"

"External SD card now says "SD card blank or has unsupported file system"

after I attempted to backup on my computer. It is a Samsung Galaxy "Vibrant" running Froyo (2.2) I mounted the card upon plugging into my computer, opened explorer and attempted to copy files for backup. Now I don't see data on my computer, mostly photos and videos I'm concerned with. Can the data on the external SD card be retrieved? If so, how. Thanks!


问:
Safety net check ok but banking app not working
I'm running magisk latest and have configured it to hide it for the usual suspect apps.
I also have a custom kernel (Marco) that hides/resets the unlocked boot loader flag.
All tests with safety net apps, Pokemon, Android pay work without any problem, besides two banking apps that reject starting.

How do these banning apps determine root or modifications, while all others cannot?


问:
Is it possible to implement seamless update in a ROM for nexus 5?
Android Nougat’s “Seamless Updates”, Explained

Seamless update feeature that was implementated in Android Nougat needs proper hardware config to work, which is nothing but another partition created specifically so that future updates get installed in 2nd partition and next time phone reboots, 2nd partition is used as system partition.

will it be possible to do if I created 2nd partition myself?

are their any Custom ROM available for hammerhead or hammerheadcaf that has this feature?


问:
Adding new members to whatsapp group while admin lost his whatsapp phone number
I am part of a whatsapp group in which there is only one admin. Unfortunately the admin is not using the number he used for whatsapp. Now how can we add a new user? Or how can someone else become the admin.? And we don't know the invite link for the group also.</p>


问:
Bluetooth Button Press Default Change
I have a bluetooth headset I am using with a Galaxy S4, where a long press (longer than a quick press but less than 3 seconds) will trigger voice control.

When I first tried to do this action it asked me to choose a default between google, and car mode. I accidentally selected car mode and now I can't find any settings which will let me adjust that. I've gone through every single menu in both applications, and the system settings.

Is there some way for me to reset it, or change it by editing a config file?

Thanks!

Title: Bluetooth Button Press Default Change


问:
Unlock Bootloader on Samsung Galaxy S6 AT&T
I'm trying to root my phone, and I was told that because I own a Galaxy S6, I need to unlock my bootloader. My carrier is AT&T, which makes it apparently even more difficult. I've tried things such as fastboot, which will get stuck telling me waiting for device input. I'll look that up, and it turns out I need to install PdaNet if that happens. Of course, PdaNet is blocked by AT&T and there's no way to install it.

I've found at least a dozen articles and the like on the matter, and none of them have worked. If anyone's got some advice, or even just a flat-out "it can't be done", I'd greatly appreciate that. I'd also like to know if unlocking the bootloader is necessary, and if it isn't, I'd love to know what I've been doing wrong, and what my next steps should be or what guides are good and up-to-date. Thank you all in advance!


问:
Wrong file selection
I have a Galaxy Tab Pro SM-T900.  When I try to select a file (JPG) from the my files.  I get the wrong file.  Is there some setting change that would fix this.</p>

Title: Wrong file selection


问:
Why sush tries to execute strings in my array as commands and how to prevent that?
When running a script that contains an array in a variable, the strings in the variable will be executed as a command, I don't need anything inside the array to be executed as a command, how to prevent that ?

I get the error sush: /su/su.d/1mount[5]: /mnt/runtime/default/MicroSD: can't execute: Is a directory

```<code>#!/system/bin/sh
count=0
LOG=/data/media/0/Logs/MicroSD.log
PARTITION="/dev/block/mmcblk1p3"
TARGET={"/storage/MicroSD" "/mnt/runtime/default/MicroSD" "/mnt/runtime/read/MicroSD" "/mnt/runtime/write/MicroSD" "/mnt/media_rw/MicroSD"}
FSTYPE=ext4
VOLDBLOCK=/dev/block/vold/179:66
[ $(wc -l $LOG) -gt 5000 ] && sed -i "1,$(($(wc -l $LOG|awk '{print $1}') - 5000)) d" $LOG
echo "$(date) Starting..." >> $LOG
for m in ${TARGET[@]}; do
    mkdir $TARGET[$m] 1>> $LOG
done
contains() {
    string="$1"
    substring="$2"
    if test "${string#*$substring}" != "$string"
    then
        return 0
    else
        return 1
    fi
}
while ! ls $PARTITION
do
    count=`expr $count + 1`
    if test $count -ge 100
    then
        break
    else
        sleep 0.1
    fi
done
mount_partition(){
    ls -d $TARGET[$i] 1>>$LOG 2>>$LOG
    if ! ls $PARTITION
    then
        echo "$PARTITION not found" 1>>$LOG 2>>$LOG
    else
        while ! ls -d $TARGET[$i]
        do
            count=`expr $count + 1`
            if test $count -ge 100
            then
                break
            else
                sleep 0.1
            fi
        done
        sleep 0.5
        if ! mountpoint -q $TARGET[$i]
        then
            mountres=`mount -t $FSTYPE -o rw $PARTITION $TARGET[$i] 2>&1 > /dev/null`
            mountret=$?
            while test $mountret -ne 0
            do
                if contains "$mountres" "nvalid argument"
                then
                    echo "\n******************************************\n2nd partition filesystem is invalid\n******************************************\n" 1>>$LOG 2>>$LOG
                    break
                else
                    count=`expr $count + 1`
                    if test $count -ge 300
                    then
                        break
                    else
                        if mount -t $FSTYPE -o rw $VOLDBLOCK $TARGET[$i]
                        then
                            break
                        else
                            sleep 0.1
                        fi
                    fi
                fi
                mountres=`mount -t $FSTYPE -o rw $PARTITION $TARGET[$i] 2>&1 > /dev/null`
                mountret=$?
            done
            mount -t $FSTYPE -o rw $PARTITION $TARGET[$i] 1>>$LOG 2>>$LOG
            mount -t $FSTYPE -o rw $VOLDBLOCK $TARGET[$i] 1>>$LOG 2>>$LOG
        else
            echo "2nd partition already mounted at $TARGET[$i] ..." 1>>$LOG 2>>$LOG
        fi
    fi
}
for i in ${TARGET[@]}; do
    mount_partition &
done
echo "\n******************************************\nMount output\n******************************************" >> $LOG
mount >> $LOG
chown 1023:1023 $LOG
chmod 770 $LOG
</code>```


问:
Google Photos really doesn't care for folder hierarchy on backups?
I've enabled the auto-backup feature from Google Photos on my Android phone, and every here and there it asked me through notifications if I wanted to backup a new given folder.

I keep my photos organized on my device through a couple of folders, such as "Parties", "Work events", "games", and so on.

Well done, some of those folders were gone from my phone, not sure why. That's a task for the backup feature, right?

Wrong, it seems! I can't seem to find the given folders in my Google Photos. Am I mistaken or the backup feature selects folders but ends up placing all pictures in the same basket, only organizing by date?? It should backup folders as well, not only the files inside them, getting rid of the hierarchy! How stupid could that be??

Is it possible to enable folder backup with their current hierarchy?

Furthermore, there are some very old pictures (2008/2009) which are showing up as 2022/2023, clogging up my "recents" view. How do I fix that?


问:
Nexus Player has blank screen after factory reset
I have an old Nexus Player which I am trying to get working. I ran a factory reset from the UI when I got it up and I was able to get through all the Google TV setup config steps like setting up wifi and enabled location detection. Once that is done I get a blank screen.

I am willing to try flashing the device but I am not sure how. I cannot enable USB debugging because I cannot access the developer options.

I am able to access the Recovery menu where I can wipe data and reinstall the OS but I cannot see a way to install a new img.

I am a noob here. I have tried factory reset a number of times to no avail. I tried to list all devices through adb on my laptop but it does not show up. I really just want to get this thing to work.

What can I do?


问:
GPS message when turning on phone
I have a Nexus 5 running android 6.0, I was updating som apps when the phone turned off for low battery level. When i switch it on again I had a dialog saying that GPS is not active (as ever) and apps can't access to position. I have 2 options:
Close
Activate GPS
I've never seen this message before,.but now I have it every time i turn on my phone and it's  pretty annoying</p>

Title: GPS message when turning on phone


问:
How do I understand the text file of a bugreport?
My phone crashed for no reason. A bugreport was created and I sent it to my own email-address. It is titled titan_retaildsds-user 6.0 MPB24.65-34-3 3 release-keys and contains a zip file with a text file in it. How do I understand the text file to determine the cause of the crash?


问:
Relevance of the ฯ character
I've noticed that there's a seemingly Thai character (ฯ) on page 2 of my Android special characters keyboard. I couldn't find any reference to the character's usage outside of Thai orthography, but I assume it must have some broader usage if it's important enough to merit its own key. Could someone illuminate its typographic significance for me?</p>

Title: Relevance of the ฯ character


问:
Does Android 4.0 (ICS) support Kannada Font?
I am developing one regional language kannada news app,in which my problem is that,in 2.2 and 2.3 the app does not suppport kannada fonts whereas 3.0 supports kannada font.

One month back I heard that Android would provide all 3.0 features in 4.0

So my question to enthusiasts is that could any one help me about how to go with the kannada font?


问:
How to root and install TWRP on LG G3
I would like to install LineageOS on my LG G3 d855.
Therefore I need to install TWRP.
Therefore I need to root my device.

I am running an ubuntu laptop and tried to use PurpleDrake-Lite but it ended up with the fallowing log:

```<code>chmod: cannot access './assets/linux/': No such file or directory
Launching PurpleDrake for Linux

Welcome to PurpleDrake!

Please ensure your phone is connected, powered on, and USB debugging is properly enabled.
Your phone should be showing your homescreen with no other apps open. This is to ensure a clean state.
When you're ready, press [enter]...

Press [enter] to continue...
Waiting for device... . Found device!

Your phone is a [ LG-D855 ] on [ VDF ] running SW version [ V30n ] ...

Alright. We're ready to go. We're going to temproot your phone first. Press enter when you're ready!
Press [enter] to continue...

Rebooting phone...
Waiting for device... ....... Found device!
Found device, checking if vulnerable...

ERROR: Your phone is not running a compatible software version. No vulnerable mode detected, rebooting phone.
We tried to temproot you, and it didn't work. This phone isn't vulnerable, it would appear.
Please post on XDA with your phone model, carrier, and SW version in the PurpleDrake thread and someone will take a look.
Your phone has been rebooted back to normal system mode, no changes have been made. Thanks for trying!
</code>```

Well I am wondering about the really first line. PurperlDrake tried to change permissions on assets/linix. I checked out this directory, but there is only linux32 and linux64. I am totally confused what to do next. Rooting my old Nexus device was pretty easy done by the adb tools. But the LG G3 seems to be much harder to root.

What is the right way to root my LG G3?

Title: How to root and install TWRP on LG G3


问:
Getting rid of AwareMem_Kill of Huawei
I have a Huawei Mate 9. Somebody thought that using more than half of the memory is evil, so the system kills (yes, actually it does a hard kill, they're even removed from the task switcher etc.) random apps (even low-memory ones, freeing up only a few megs) over and over again (it's sometimes a constant flow of restarting/killing/restarting/killing for a while), when the free memory is around ~ 1.8 GB out of the ~ 4 GB, just to "improve performance" (yes, that's what support guys said).

This line is logged for a few times (and searching for AwareMem_Kill in the internet doesn't bring up results):

```<code><datetime> 1024 12427 W AwareLog: AwareMem_Kill: updateGroupList package: move high frequent=<fancy-app>, uid=<uid>
</code>```

Any idea how to disable that "feature" and why Huawei has that weird engineers doing hard kills when 2 GB of RAM are available and not using the Android functionality? Or does the device even not have 4 GB and they're only claiming that and trying to hide the fact? I have no idea ...

Title: Getting rid of AwareMem_Kill of Huawei


问:
How to know the data consumption of android device within a very small date range

Background

I watch my data consumption religiously, since the telcom operators in Lebanon charge an arm and a leg for every MB spent. The bundles cost ok, but when you exceed the bundle they charge you like 6 cents a MB.

What happened last month is that I eventually exceeded my 20GB bundle at May 12, 8:12 AM, so I immediately turned off my data usage on my android, and tried to upgrade the bundle. It turns out that the operator system was down. I called them, they said keep your data turned off until the system is back up again.

So eventually the system got back and I upgraded my data bundle at May 13, 1:53PM.

Problem

Come monthly bill time, I got charged crazy cash. I called them and they claimed that I consumed 3.6GB worth of extra data! Now the above is my side of the story, I would like to prove it using the data manager of my android device

The data manager of my android device shows consumption per cycle (which is defined by me, i set it at the 16th of every month since my billing cycle with my telco operator ends at the 15th midnight).

Question

What I would like to do is basically zoom in the data usage report and basically see exactly how much was consumed between May 12, 8:12AM and May 13, 1:53PM. Is that possible using android settings natively or through a third party software? Please bear in mind that this must be done to historical data, not from future data as it's impossible to predict the future.

Tech Details

My phone is Nexus 6p running Android 7.1.2


问:
How do I disable "Supply power" over USB?
With my Nexus 5x connected to a desktop PC over USB: when powering down the desktop I've noticed the phone switches from "Use USB to just charge this device" to "Use USB to supply power to the other connected device". On one occasion this appears to have drained the phone battery.

Is it possible to disable the "Use USB to supply power" option?


问:
Should I unlock bootloader before changing from Cyanogen to Lineage OS
My phone is YU Yureka (AO5510) Which comes with Cyanogen pre-installed but not rooted. I bought it 2 years back and I am still at CM 12.1 which is based on Android 5.1.1 Lollipop and I am not getting any OTA updates.

I would like to change from CM 12.1 to Lineage OS 14

The question is,
 because of some internal issues, Cyanogen OS is dead and the code then forked and maintained as Lineage OS. Also the codename is same (Tomato for my device).

So, should I unlock the boot loader to install the Lineage 14 or without unlocking am I able to install it?


问:
S6 edge doesn't vibrate
For some reason, my device (Samsung Galaxy S6 edge) doesn't vibrate. At all. I downloaded an app with the only intent of vibrating (an app that just vibrates the device), but it doesn't. This doesn't just apply to the app I downloaded (it was a test case), it affects every app that tries to vibrate. For some reason, it doesn't vibrate through any apps. Any ideas how I can fix this?</p>

Title: S6 edge doesn't vibrate


问:
Household material to mimic touches?
I'm using my Android 5.0 tablet as a drawing board, but it is hard to draw small details with finger. So, is there any common household material to mimic touch.

I already tried pencil, but it won't works.

[I do not want to buy a touch-stick or something]

Title: Household material to mimic touches?


问:
slow adb pull/push
On my previous arch linux install the adb pull/push worked at a speed of around 25mbps. Recently I recently reinstalled arch linux and since then the pull/push operation are working very slow, at around 10 mbps. The mtp transfers are working just fine. I suspect there might be a software bottleneck because the transfer speed with adb is constant at 10 mbps. I pushed and pulled a 481 mb file back and forth a couple of times and the time was always around 48.5 sec, differing at the fourth significant digit. What might cause the adb operations to slow down like that?

Title: slow adb pull/push


问:
Device has screen shots that I didn't take - Security Risk?
Quite unintentionally, I clicked open this system folder

```<code>/data/system/recent_images
</code>```

to find screenshots of apps used, images from sites visited and you tube videos

Googling this, led me to this GitHub post which claims that it could be a possible NSA backdoor and that screenshots correspond to entries in

```<code> /data/system/recent_tasks
</code>```

Can somebody explain the purpose behind it and should it be a security concern?


问:
Upgrade/downgrade OS without custom recovery and root
My smartphone model is Lenovo A7000a. Let's say I want to install Lollipop in it. More specifically, I already have Lollipop installed, but I want to reinstall Lollipop. Or say, I want to install downgraded versions like Jellibean, etc. Now my phone is rooted, Xposed installed, custom recovery installed.

Now, I don't want to install custom recovery. I want to know how the service centers install OS without custom recovery and even root.

Can anyone please tell me this process? How service centers installed any released OS in phone with only stock recovery and without root?


问:
How can we get a list of URLS recently visited by an android device? And the amount of time spent on a URL?
I am trying to figure out how much data collection for time tracking can be automatically done on android devices.

So basically I want to collect the amount of time that a user spends on youtube, facebook etc. It is possible to log the currently running activities, which can be used to figure out roughly for how much time a particular app, e.g. FBMessenger/WhatsApp, was opened. But, I want to also track the browsing pattern of a user in an app-agnostic way.

There are a few parental control apps that promise to do this such as:

```<code>https://www.qustodio.com/en/family/how-it-works/
</code>```

And I want to figure out how they might be doing so, which api/permissions allows for this level of access?

UPDATE: For example the Net-Nanny android FAQ says that

```<code>Once those settings are done Net Nanny will Initialize and invite you to
browse the Web! – This will be done thru the Net Nanny Browser.
All other browsers will be blocked.
</code>```

This is a bad solution since this presumes that a user has to change his/her behavior in order for me to monitor them. I don't want to block anything for the user, only create usage stats.

I also don't want to install a VPN server if it can be avoided because it gives a persistent warning message to the user.


问:
Some apps do not display notifications when closed
I have a Huawei Y536A1 (Huawei Fusion 3) on Android 4.4.3, and I'm having an issue with some apps not giving notifications when they aren't opened, but apps like YouTube and Skype (sometimes) giving notifications even when they're closed. I checked my notification manager and all apps are set to allowed. Any idea why this is happening?</p>


问:
How to put Google Voice into Hands Free mode?
Google Voice can be set to provide voice ptompts Always or only on Hands Free mode.

I want the latter.

But how do i put my s7 into Hands Free mode?


问:
How to root android device with lollipop without internet connection
I want to root my smartphone to use reverse tethering but when I install apps KingRoot, KingoRoot they require internet connection

How to root without internet connection?


问:
Rooting Samsung Galaxy S6 without voiding warranty?
Is there a way to root a Samsung Galaxy S6 without voiding the warranty, while also allowing it to OTA update to the latest version of Android supported by the device?

Using a PC to help in the process is fine, if needed.


问:
How do I add an app-specific (i.e. Trello) URL to my home screen?
I've got an app-specific URL that opens in a particular app, rather than my webbrowser.

In this case Trello, for example someone sends me a link to a Trello card, like https://trello.com/c/xyz123abc/Some-Random-Card in an email or text message. When I click that, it opens in Trello.

Now I want to add this as a shortcut in my Android home screen. How do I do that, or how do I get that to open in the intended app (in this case Trello) rather than my browser?

What I tried was visiting the URL in my browser (which shows a web view of the particular trello card) and add that as a bookmark to the home screen. But when I click that bookmark, it opens in my browser again, it doesn't recognize the URL as being intended for Trello, as is the case when clicking that same link in an email or messaging app.


问:
Delete programs pre-installed on Samsung Galaxy 551

Possible Duplicate:

  How can I uninstall applications that are locked by phone vendor?

How can I delete some programs that are pre-installer on my phone?
On settings I can't delete them, is there a way to delete those?

I'll use it focused on development.

It has some samsung applications that I'll never use.

It comes with Android 2.2

Thanks in advance for any help


问:
/system/xbin/custom-command cannot be found
Originally I copied a shell command  file to /system/xbin/ as custom-command and it worked, meaning when I am in terminal emulator, I could type

custom-command

and it runs. What I did was simply copying the sh file to /system/xbin/ after removing the .sh extension. Now after I restart my phone, I re-enter the command and it fails to run, instead I receive "sh: /system/xbin/custom-command: No such file or directory" message in the terminal...


问:
All my Internal Data Has Been Removed Without Reset.. Help?
When i had charged my Device in morning in Switch-off Mode after Charging i had Boot up the Device (Device Details Below).. I got all my internal data Gone.. All Internal Apps, Apps Data, Music, Video all gone.. I've not did Factory Reset nor Access the Recovery Mode since i've been using the Device..

Device Information :

Device Name     : Samsung Galaxy Note III (SM-N900)

Android Version : v4.4.2 (KitKat)

Root            : Still not Rooted since the Purchase running on Stock OS.

All the Google Apps and Galaxy Plus Apps have been removed out of no-where, even the PlayStore has been Gone.

All the Data is Gone it shows Device Storage have Data but it doesn't appear anywhere nor in File Manager or Computer.

All the Internal Storage & Downloaded Apps are shown Corrupted.

Internal Storage App data is also Gone.

x What's Good :

Only the SD card Data can be seen and SD card Apps, though the SD card apps

  have been lost its data (such as i have a Chat App which is in SD card it's
  there but lost its all chat history, when i opened the app it ask to
  sign-in, and i sign-in and it's all gone all the chats are gone).

x What i Did :

I've tried installing the corrupted apps and then to see in application manager it shows still its an corrupted app.

I've checked in computer as if it shows, no it shows the new data.

I've checked whether it shows in Recovery Mode, no it doesn't shows.

Let Me Know For More Information. So Please Help me Out with the Problem and Recover the Data of the Internal Storage.


问:
Use Android phone as Android Wear device
I would like to install my old Android phone as a bike computer. As many apps now have support for Android Wear, it would be cool to be able to use that phone as a display for Google Maps Navigation and Runtastic tracking.

Is there any way to run Android Wear apps on an ordinary Android phone?


问:
Cannot call toll free numbers or 3-digit numbers using voip.ms with softphone apps
With my LAN phone plugged into a Grandstream HT701 ATA, I am able to call toll-free numbers and three digit numbers like 311 and 211 with my voip.ms account. When I call 3-digit numbers with my Android phone using cSipSimple or Zoiper, I get a voice message that says "The number you have dialed has not been recognized". When I call toll free numbers with those apps I get a voice message that says "41611" with cSipSimple and "41613" with Zoiper, followed by "We're sorry because of technical difficulties we are unable to route your call". I am able to dial regular 10 digit phone numbers without any problems.

Is there a way to fix this or is this just a limitation of softphone apps? I also don't get the above errors with Android's native SIP client but I would like to use cSipSimple for it's features e.g. call recording.


问:
How do I change permissions of a file on SDCard?
I am making an image file of the partitions on my phone's internal memory. The images are being stored on the phone's SD card (for obvious reasons, I can't store them on interal memory).

I'll need to view these files in Windows later. However, dd is creating them so only root can see them.

Apparently, changing permissions of files on the external SDCard is difficult, but I need to do it.

Alternatively, how do I make dd create the file with the right permissions in the first place?


问:
Proximity sensor stuck in one position
I have noticed that sometimes screen doesn't go black during call as it should, and also double tap to wake sometimes doesn't react. So I opened AIDA64, and under sensors/proximity sensors it shows 1 or 0 when sensor work fine but when it doesn't turn off screen sensor is "locked" to 1 or 0. After reboot sensor is going back to normal. Is there any way to find out who is to blame for locking sensor in one state?
The device is LG K8 (k350nds) running stock Android marshmallow 6.0, non-rooted.</p>

Title: Proximity sensor stuck in one position


问:
How to keep screen from turning on while unlocked?
When I get a notification from messaging apps like Snapchat, and my device is unlocked but the screen is off, the phone will not buzz but the screen will just turn on. This will happen when I am at a trusted place or I am connected to a trusted bluetooth because I use the smart lock feature. I would prefer to keep using smart lock, but if Snapchat turns the screen on and starts using the camera without me knowing, I'll miss incoming messages and lose massive amounts of battery.

How can I keep using smart-lock AND prevent incoming messages from turning my screen on?

I am on Android 6.0 on a Moto X Pure Edition.


问:
Why does my wifi keep turning off and on?
I'm using an LG G5 with an AT&T mobile plan.

My wifi keeps turning off and back on every 30 to 60 seconds. If I enable wifi in the settings, it just disables itself 30 to 60 seconds later... and then 30 to 60 seconds after that, it turns itself back on... and it just cycles like this.

I've googled this problem and can tell that several people have had this problem, but none of the relevant solutions seem to work.


问:
Two clocks, different times
The clock in the lockscreen shows the right time, but the one on the right corner of the status bar gets stuck. It shows the right time when I turn the mobile on, but then at some point it stops and stays at whatever time it was showing at that moment.

What could be happening? Is there a way to fix it?

Title: Two clocks, different times


问:
How to recover phone from lost mi account?
I got a xiaomi mi4i from my brother a while ago which was lying with him for quite a while. So, after I got it, I did a factory reset and tried logging into mi account only to realize that the device has been associated with another account. I asked my brother about account info but he had given the phone to a friend and he doesn't remember the account. So, basically the phone is useless right now.

BTW, before anyone of you say so, this phone is not stolen and I have the proof of purchase with me.

So, is there anything I can do to remove the associated mi account?

I know I can downgrade the OS to unlock it, but as soon as I upgrade from it, it again locks the phone with a message "this device is locked". what can I do to unlock it?


问:
Retrieve photos from half booting tablet
Last week I retrieved an Android Tablet (an Asus Transformer Pad tf300t).
Now it does not want to boot-up. To be honest, I don't really care about the tablet itself, but the photos on it.

I can boot in on fast boot I think, and see three icons: RCK, Android and Wipe data.

When you connect the USB cable to it, the computer will recognize the fast boot of the tablet. But you cannot do anything with it.

So how can I get the photos from the tablet :(

/Daan


问:
Receiving a call downgrades to 3G/H permanently?

Some background

I'm using my Nexus 5X running Android 7.1.2 as a wifi access point for my computers. I'm subscribed to an unlimited 4G plan, no upper limits. I got the phone last Fall, which is also when I switched from a wired ADSL connection, and this has been a consistent problem.

The problem itself

Whenever I receive a phone call, the mobile signal downgrades from 4G to H and speeds drop significantly (as one would expect). This isn't a problem in itself; 4G is exclusively for mobile data. But after the call has ended, the phone can't reacquire 4G until I restart it or turn off tethering for a long time. Turning mobile data on/off to reacquire the connection does not work.

What now

Obviously having to reboot the phone every time I receive a phone call is bad, so what can I do about it? I don't use my phone or Android a lot so I might just be missing something obvious here.

Not working

Toggling airplane mode does not restore 4G

Toggling mobile data does not restore 4G


问:
Should I do a factory reset or just change accounts when I give my phone to my mom?
What's the best way to swap Android phones? I have an older Android phone (Moto G; Marshmallow) that I want to give my mom to use. She currently has an older Android phone.

So far I've only upgraded to brand new Androids from old Androids or just done factory resets to wipe out all data before I trash Androids. So I'm used to that. But this time its a different goal.

Should I be:

Just doing a factory reset & then do an Android to Android transfer?

Merely change the account associated with this phone?

Some other way.

What's the recommended strategy? Any tips? Pitfalls?

PS. I've spent a day installing all the recommended updates to upgrade it all the way to Marshmallow. So if I can I don't want to lose that effort. Almost 700 MB of incremental upgrades.


问:
Browsers crashing when trying to access captive portal (Wi-Fi log in page)
Recently I noticed that whenever I try to login to a captive portal Wi-Fi page, all of the browsers that
I'm using crash. This happens before the page even finishes loading and consenquently I am unable to log in to the Wi-Fi service.

I have tried using different browsers (Stock Android browser, Google Chrome, Dolphin browser and Opera Mini). The following error shows:

```<code>Unfortunately "browser" has stopped
</code>```

for each of the mentioned browsers or sometimes they just close to home screen with no specific error message. I suspect it may be due to a conflicting certificate signature or problems with certificate because Chrome shows  NET::ERR_CERT_AUTHORITY_INVALID with HTS error  but I have
no substantive evidence for this, since it used to work fine before.

Also I have noticed that on the other device running Android 7.0 it reports a problem with the certificate:

There is a problem with the  security certificate for this site

What could be the cause of the problem and are there any workarounds to fix this?

Edit: I've included the screenshot


问:
Is it possible to enter a lock code on a computer?
I locked my phone during a false "it's been stolen" panic using Google's device manager.

I chose a nontrivial password. I thought I was safe since I cut-and-pasted the password after first typing it in a text editor.

Now either something is wrong or my fingers are incapable of duplicating this password on the (now found) device itself.

Is there a way to cut-and-paste the password from a computer, rather than on the device itself? The device is in developer mode and is not rooted.

Update

Luckily I had the "Hacker's keyboard" as an option. The default Gboard keyboard does not give any feedback, but this hacker's keyboard flashes the last key pressed. Now I know with certainty that I've typed the password exactly as I had cut-and-pasted it. Hence entering the password on a computer may not help either. I wish they'd have added an "Unlock your phone" feature along with "Lock your phone" on Google's device manager page.

Update 2:

As a reference I'd like to mention here that entering a second password using the GDM is rejected. You're stuck with the first password you chose.

Having a GDM as flawed as this is still better than risking that your private information gets in the hands of random strangers, but be prepared to wipe your phone when you recover it. It may be the only option remaining.


问:
Why can't my phone write to external USB drive?
I bought a new 3TB USB3.0 external harddisk for storing and transferring large files (mainly hd movies from my camera) between my Android phone (Galaxy S7 edge) and my PC (Win10).

Using windows, I...

formatted the disk as exFAT

transferred (moved) some folders with files to the drive

created some new folders and transferred some files into those

Now when I plug this drive into my phone, it:

can read and copy the moved directories and files

can see the newly created directories

can not see any files into the newly created directories

can not create a directory anywhere on the USB drive

can not edit or rename any files on the drive

My Phone

is running Android 7.0

is not rooted

is using the default "My files" app

What do I need to do to give my phone full access to all files on the drive?


问:
How to disable "achievement" pop-ups?
When I'm playing a game, sometimes Google Play Games gives a pop-up at the top of the screen notifying me of a an "achievement". How do I disable this? The settings have checkboxes for notifications for "multiplayer", "missions" and "requests" but not for "achievements". </p>

Title: How to disable "achievement" pop-ups?


问:
Transfer multiple google accounts to a new device
I have several google accounts for different games, work and personal. I have 2 new devices on Android 7.0 Nougat. I would like to know how to transfer then all to the new devices without having to type each and everyone in the devices. </p>


问:
Is it safe to use OTA update while rooted with TWRP
I have a Lenovo Tab 2 A7-10 F, in which I have installed TWRP and rooted with SuperSu. Recently it notified me of an OTA update:

T2_A7_10F_S000057_160701_ROW

But I am not sure if I should install it or not. Is it safe to download and install this update in the aforementioned configuration or will it damage my device? And if I try to do this,  will it even install? Or should I try to find a flashable zip file???Please Help


问:
Recover old Naver Line messages from Titanium Backup
Ok, I recently flashed my Samsung S7 with the latest stock firmware and rooted it so all my files got deleted. I did a backup on Titanium but my mistake was that after rooting, I logged on my Line (without restoring the Line backup first) and clicked yes to deleting the messages in "the other device". Stupid, I know.

I know Line recognizes devices based on Android ID. So the new Android ID on my latest firmware is now the default account and I got logged out on my "old device" with my previous Android ID.

I tried restoring Line on Titanium without restoring my previous Android ID (since my new Android ID is now the default) but it doesn't work, Line simply crashes and would not launch.

Now I am fine if there is really no way to use my old chat history on my new firmware. What I just want is at least be able to recover my Line messages from the Titanium Backup file. It's got all my messages from years back, so many important and sentimental stuff in there, including money I paid to my landlord lol.

Any ideas? Thanks!

PS
I really wish Line would stop this security feature of using only one device for one account. Heck I wish they just follow Facebook messenger and upload all data to the cloud so that it won't be a huge headache when people migrate to new devices.


问:
Can not find moved-to-system app after update
I moved some apps (WhatsApp and Amaze) to /system/app using the /system/app/mover some time ago. Now my phone did an update (I have a Meizu MX5 with Flyme OS) and I can't seem to find the apps anywhere, neither in the F-Droid Apps section for Amaze, in the /system/app/mover application, in the /system/app folder or in Settings/Apps.

When I try to install the apps from the application market, it says that the apps are already installed and I see the same version number like this:

When I press continue nothing seems to happen and I still cannot find the app anywhere. How can I retrieve these apps?


问:
Is Samsung S6 battery usage screen inferior? Alternatives?
I've started experiencing bad battery drain on My S6.

The last time I had to diagnose battery drain was long time ago on an LG G2 that I'd rooted. It had a really good battery diagnostics showing usage by hardware as well as services etc IIRC.

But my S6 (with latest updates) gives very little information - and it seems incomplete. Over night my battery went down from near 100% to completely dead, but the battery usage screen showed just 13% usage by the screen, and 6 apps / services using a total of 7% between them, so total percentage being under 20%! What about the other 80%? I don't trust the results at all.

I've tried various battery usage apps and they all just direct the user back to Samsung's battery usage screen.

What can I do to get a hold on what's all of a sudden causing this battery drain? I've done reading online and what's suggested is very hit and miss. I don't want to spend hours or even days playing the guessing game and having to experiment to find the problem!!!


问:
How to update the pagination on MS Arrow Launcher
I think in previous versions of the MS Arrow Launcher when I swipe up and down to see all my widgets there was no 'pagination'. In other words as I scrolled up and down the page, I could stop it at any point.

Now it appears I am paging up and down. The issue I have is some of my widgets expand over this pagination border. For example, I have a vertical weather app which is 1 grid box wide and 4 grid boxes high. Part of it is over 1 of my pagination and so is the other.

How can I disable this pagination?


问:
Phone not receiving text messages unless messaging app happens to be open when message is sent
My phone only receives text messages if the messaging is open when they are sent.

Messages that are sent at other times (eg when I've just opened a different app) never show up on my phone, even when I later open the messaging app.

(I tested this by sending myself texts from a different phone.)

This is the case no matter which SIM card is in the phone (tried 3, multiple carriers).

My phone is a BLU Advance 4.0 L2 running Android 6.0, and I'm using the default messaging app called Messages.

Edit:
I tried using Textra instead and had the same issue.

I tried clearing the cache partition from recovery mode. The problem persists.

How might I fix this?


问:
Is it possible to do a TWRP restore from laptop - would adb restore do the same? Other ways to perform restore?
This is a pretty annoying situation I've found myself in.

A section of my screen has become non-responsive, sort of across the top, where the top row of digits would be.

I read online that a possible fix would be performing a factory reset. which I did. Didn't solve the issue, so I think the digitizer might be damaged somewhat, which I'm going to look into getting repaired.

Anyway, I had previously done a backup of my data through TWRP but, wouldn't you know it, the section that is nonresponsive falls exactly where the Backup/Restore buttons are, so I can't restore my data now.

Are there alternative means for me to restore this data? I know there's a thing called adb restore, but I'm not sure if it's the same and wanted to make sure before toying with anything.

I know that TWRP has a Terminal under Advanced. Is it possible to do anything with that?

The bootloader on the phone is unlocked and was rooted, up until now, I guess.

EDIT:

OK. I figured out that you can use adb through TWRP recovery.

adb shell twrp restore

However when I do this through CMD it says no partitions selected.

Any idea?


问:
How to bypass hourly limit of outgoing messages?
How do one bypass hourly limit of 100 outgoing SMS on Android 6 without replacing completely current system provided by OEM?</p>


问:
Make TWRP recovery permanent
```<code>Phone: Xiaomi Redmi 4 prime (unlocked)
Rom (custom): lineage-13.0
</code>```

By entering into fastboot, using the twrp 3.0.2.0 recovery image (made specifically for this phone) and issuing the following commands, I can successfully boot into recovery and use twrp;

```<code>fastboot flash recovery cofface_twrp_recovery_markw_1121.img
fastboot boot cofface_twrp_recovery_markw_1121.img
</code>```

The problem is, the flashing of recovery is not permanent and as soon as I reboot into system, I will lost the twrp recovery and have to use fastboot and flashing recovery again;

How can I make the twrp recovery permanent?

Update 1: If I don't use fastboot boot cofface_twrp_recovery_markw_1121.img at the end and use the hardware keys to enter into recovery while the phone is off, it remains at oem logo (MI logo) forever.

Update 2: When I was using the stock rom (MIUI 8.2) and applying the above procedure, the first time that twrp showed up, it asked to make the flashing permanent and it became permanent in spite of numerous system reboots.

Title: Make TWRP recovery permanent


问:
how does CSipSimple connect to Ekiga through NAT?
What networking magic does CSipSimple employ for Ekiga that it works behind a Netgear home router and NAT?  Jitsi cannot connect to Ekiga from behind a router.

Wikipedia says that it uses:

NAT traversal using STUN, TURN and ICE

But which and how?  This is in the context of configuring Jitsi.


问:
Android Notification Issues relating to time
Over the past few weeks, I've had a serious increase in issues related to notifications on my Pixel, running Android 7.1.2. I'm beginning to suspect some sort of larger overarching problem, and I'm curious as to what the technical minds at Android Enthusiasts think.

My problems:

1) Notifications appear anywhere between 1 hour and 2 days late.

2) Clicking on notifications usually doesn't work, and sometimes presents the activity for the notification hours or days later. (example: I was at a CostCo and clicked on the location aware notification from the Google App, yesterday. This morning I was simply using my phone and then the Google Maps page for CostCo finally appeared.)

3) Do not disturb has failed to turn off at the appropriate time. (I set Do Not Disturb on Total Silence for one hour, eleven minutes after the time it was suppoed to turn off I looked at my phone, tried to change the volume, and the status bar appeared explaining the phone was on Total Silence for -11 more minutes. That's a negative eleven. In this instance, my sim card was out at the time, but I don't think that should have affected it.)

What could be causing these issues? Is it something timing related like I hypothesize?

Edit: I have rebooted multiple times and am fully up to date.


问:
Remove words from the SYSTEMS predictive dictionary
On my Wileyfox Swift, the pre-installed keyboard is called "AOSP keyboard". It allows to type and to "swipe". When set to German, and I "swipe" the word "mal" (you can compare that to the English "just"), which happens quite often, in 90% of the cases text prediction replaces it by "NSKK". At fist I was irritated, then annoyed. Finally I looked up the term, which up to then told me nothing, and found out it's an abbreviation for the "national socialists motor corps" (Nationalsozialistisches Kraftfahrkorps) – and now I even feel offended.

I tried and checked:

no such term in any of my "user dictionaries" (I had wondered if)

Editing the built-in autocorrect dictionary in AOSP keyboard suggests to unpack, edit and repack the APK – which for me (and most users) is no option

Where's the stock keyboard's predictive dictionary located? mostly speaks about the user dictionaries, also mentions the source for the stock dictionaries, and one user reports (in 4/2012, so not sure if it still applies) where he found the files on-device – but no way how to edit them

Delete words from the built-in dictionary? (2015) never got an answer

Most other questions here talk about specific keyboards like Swype

hints I found in several posts (like long-pressing the predicted word should bring up a possibility to delete it, or correcting it often enough should make the system deem it "more important") did not work out.

Is there any way to get rid of those stupid predictions? I'm fine with solutions requiring root, even if it comes to edit some SQLite database. Imagine every time you typed "just" it would turn into "KKK", it's a horror…

In case it matters: my Swift still runs on its original CyanogenOS 12.1 (Android 5.1), as I didn't wish to go MM with it (and specifically not Nougat, as it has no XPosed).


问:
Enable USB Debugging Android Dead Screen
I obtained a Nexus 6 with a dead screen. I am trying to cast the screen to my computer. In order to do so, I believe I need to have USB Debugging enabled (which is presumably off).

I managed to boot into recovery mode

I tried to follow: How to enable USB Debugging in Android if forgotten pattern for screen-unlock?

but for some reason /data is empty.

I have mounted /system
and added appended various lines to build files (link needed)

I am using twrp-3.1.1-0-shamu.img recovery image. When I boot (via fastboot) this image I can use ADB.

I have an OTG cable, mouse and keyboard but I doubt they will be helpful since I cannot see the screen


问:
Privacy level with an anonymous account?
I am interested in the currently achievable levels of privacy on an Android device. As far as I understand it, the best one can do is not to activate a Google account. However, even then significant data is leaked to Google, as illustrated by a Florida law suite. There appears to be some controversy on the subject, as some sources claim location tracking only starts after users explicitly agree to send the information. Can someone shed some light on this? Is this location information sent to Google by default? On all types of smartphones?

Short of not activating a Google account, the second best option is to do the following:

create a new, dedicated Google account and associate the device with it

disable contacts, mail, calendar, background data sync and autosync (as described in this question)

If the account is only directly used to access the Market, what kind of communication takes place between Google and the device? Can anyone provide a URL to official ("looking"?) documentation on the subject?

In short, I am looking for an answer which provides a comprehensive list of the kinds of information exchange which take place between a cell phone with a new Google account and Google. If you provide a better strategy to reduce the amount of information shared (other than rooting), so much the better.


问:
interchange front and rear camera
My rear camera is broken and  temporarily I want to use my front camera as my rear camera. is there any way I could do this. I am rooted. The problem doesn't occur when I use the camera app but rather applications such as Barcode scanner and others which do not have the option to change the camera used. I want applications to recognise my front camera as my rear camera. Is there any to accomplish this</p>

Title: interchange front and rear camera


问:
Change data roll over to number of days
My data rolls over every 28 days. The data tracker on my Samsung Galaxy S6 is only rolling over on the same date each month. This is frustrating. I want to know how to change the data roll over to every 28 days instead of the same date each month.</p>

Title: Change data roll over to number of days


问:
Can I use Android Biometric to Authenticate 20+ Users
Is it possible to use a centralized biometric database with Android or am I limited to users having to create and register their fingerprints on the device lock-screen on each Android device?

I have an in-house built Android Application that I would like to use biometric authentication, instead of in-app passwords.

I'm looking at using something like a BioWolf 7 Device and potentially 20-30 different employees could use the device during a day.


问:
Problems to get keycodes from fitness bike Android console
I've been working on an Android powered fitness bike for a while now, to basically pull the workout information generated by the bike in realtime, to use it with other applications running in a remote PC.

The problem I'm facing now, is that I need to trigger specific key stokes in the Android system programatically, but I'm having trouble reading the Key Codes of some hard buttons of the console in the first place, as they apparently don´t leave any trace in the Android OS.

So far, I tried with Android KeyEvent Display App to see if there was any trace of a keycode after pressing these buttons. The results were negative.

NOTE: The weird thing is that there are a "Menu" and "Back" hard buttons implemented in the bike console that actually leave a trace (Code 82 + ScanCode 229 for NAV_BACK, and Code 4 + ScanCode 158 for NAV_MENU)...so, for some reason the "other" special buttons are treated differently by the OS (BTW, these buttons are used to increase the resistance of the bike while riding).
...as if they would only work when the main workout application is running...the same thing happens with volume buttons, which is even more strange, as they are standard implementation in almost every Android phone.

Good news is that the fitness app included in the console, has a maintenance function that tells you the actual KeyCodes (that's how they are called) of the console when you press them, but in that application, all the console keys produce a different output than in the Android KeyEvent app. For example:

NAV_BACK = 101
NAV_MENU = 100
INCREASE_POWER = 6
DECREASE_POWER = 5

...and also none of those codes seem to work or do anything visible, when used with input and/or sendevent commands.

So, in summary:

a) I was wondering if there was another "lower level" or alternative way to intercept these key strokes that I might be missing...I already tried to "tail" the Serial 0 and Serial 1 ports, but once again, they only showed activity when the Menu and Back buttons were hit (and the codes are the same as the ones I see with the Android KeyEvent app).

b) and...is it possible that half of the keyboard is connected via serial and the other half is not? How are those other keys connected then?

Thanks a lot in advance.
Dan.


问:
LG E980 mostly unresponsive, only intermittently displays a default background image
After the launcher seemingly bugged out on my old faithful LG E980 (5.1.1 Lollipop) yesterday my phone has been unresponsive and acting very strange. To begin with I hadn't dropped my phone or had anything out of the ordinary happen to it. But when I unlocked it for the first time in the day after unplugging it, the display went straight to multitasking rather than the home screen. When I tried to escape it a dialog popped up asking which launcher I would like to use (with the "Just once" or "Always" options).

After selecting Nova Launcher the home screen appeared with only some of the apps and widgets visible, completely unresponsive. So I rebooted it, and since then the phone will only display (apart from completely normal boot animations) the power menu, if I press the power button in the right way. Or, if I fiddle with the buttons, position it in a certain way, cover the camera or the microphone, I'm not quite sure what triggers it, the screen will display what appears to be an aerial image of a coastline for a moment before going black again.

Here's a video demonstrating the behaviour: https://youtu.be/-YNbFiLNYTo

(In the video all I'm doing is repeatedly pressing the power button. Sometimes the image will fade on and off repeatedly, but usually it will only display once, and only ever for at most a few seconds. The notification light is flashing red, telling me I have an email, which suggests that internally the phone is still working normally.)

I know it looks like a graphical glitch in these low quality images, but to me it looks too close to an actual image, I can see the ripples in the water and everything. I've never used this as a background image on my phone, I haven't seen it anywhere before. Nothing turns up when I try to reverse image search it on Google.

I'm wondering if I'm going to have to restore my phone to factory settings (as recovery mode is still accessable through the power menu) or if someone might know what the problem is and a less destructive way to fix it. It appears most likely to be a problem caused by the launcher acting up.

Thanks for any help.

Edit: New development. I pulled out the phones battery while it was still on, put it back, started it up again, and now instead of the coastline (which I'm guessing was one of default background images on my phone) the phone displays a default screensaver or animated background of some sort. Purple/blue, with bubbles slowly moving around.

The screen will stay on now, but still featureless and unresponsive with the exception of the power menu.

Edit 2: Repeated the same thing with the battery. Now the screen won't display anything at all after start up. Very weird.

Edit 3: I rebooted it and it's back to the purple bubble screen... I'll stop posting these updates now.


问:
Exporting SMS on sim card to text file
It seems to me like Android comes with the "veiled" idea that management of SMS that may be present on sim card is not so important (and maybe it's true). Anyway, take me, I have to deal with them at this moment.

Being more precise, I would like to backup all SMS (both received and sent) that are stored in a sim card and I didn't found a fast way to do that.
By this moment I came across several apps that could let me backup/restore SMS that are held on phone but nothing -NOTHING- that deals with the ones on sim card also.

What's worst is that it seems the smartphone I'm dealing with has not ability to copy all the SMS at once, so I should copy them from sim card to phone one by one and then use one of the app I mentioned before... Now, every sim card may contains even 40 SMS and I have at least 4 sim card to backup, that would be really uncomfortable!

So what I ask is: can you please suggest

an app to save/export SMS on sim card directly to text file (txt, csv, html, xml, ...)

or a way to copy/move all SMS from sim card to phone AT ONCE (not one by one)

Your help in this would be very appreciated, thanks!

EDIT:
Trust me, by now I tried several apps. Popular ones (like this one or this one) and even less known but sim-card-specific such as Sim + and I couldn't ever get SMS on sim card to be exported. So I became to think it has to do with the device I'm using (I didn't test Sim Manager for the same reason). Actually, in fact, I managed the situation in another way: using another smartphone!

I borrowed a 5 years old Samsung that came with the ability to copy SMS from sim to phone all at once (I guess it's a feature that minor brands devices don't provide)... and I can then be able to use any app to get SMS exported to text.

Now I'm thinking if it's worth keeping this question or not...

Title: Exporting SMS on sim card to text file


问:
Why I am seeing every letter capitalized while browsing in chrome?
I'm using android 5.1(Gionee p5 mini)  and chrome 58.0.3029.83
While I am using chrome i am seeing every letter capitalized. Even i got the same thing on play store and also Mozilla Firefox.</p>


问:
Restoring from cloud with TI backup
I had to flash/reset my phone so everything is back to new. I had used Titanium Backup pro to backup everything to Google Drive. I had used encryption. Now how do I get things back? In particular how do I restore from the cloud? I connected to Google Drive, but those backups don't show under the Backup/Restore tab? TI backup is confusing to use.</p>

Title: Restoring from cloud with TI backup