问:
Second instance of Instagram on Android 11
Does anyone know if I can install 2 different instances of Instagram on Android 11 (like you can do with some other apps?
I know that I can have up to 5 account on Instagram, but I would like to separate my work and personal accounts separate to manage it more effectively.</p>


问:
Samsung Health has ads?
I never noticed it before, but there is an ad in the top of Samsung Health.
Screenshot below.

Can I turn it off?

I paid for the phone and I do not expect core apps to contain ads.

ContentLicense: CC BY-SA 4.0

Title: Samsung Health has ads?


问:
adb push and wrong slash -> bootloop
I have my brand new Doogee S96 Pro which is now not able to boot.

I made a great fail:

instead of

```<code>adb push myfile.zip /sdcard/
</code>```

i wrote

```<code>adb push myfile.zip \sdcard\
</code>```

From that moment, no more boot.
I can't get what I did, but I now can only boot in the TWRP recovery.

Someone could give me a tip on what I did and how to solve the issue? Thank you.

Title: adb push and wrong slash -> bootloop


问:
Route bluetooth tether through VPN?
With an adb prompt or, failing that, a root prompt, how can I alter default behavior to root traffic through the VPN connection in Android 10 so that this behavior remains when unrooted?

In the case of an Android phone connecting to another Android phone running a bluetooth tether, neither can apply any security precautions to the tethered traffic and this is a bit of a security risk. I need to fix this hole.

Title: Route bluetooth tether through VPN?


问:
External keyboard, typing blind
Here's the same question, but I don't think it's well answered because the phone will keep registering touches when in-pocket:
Method of typing input while the screen is off

I'd like to be able to take out a small Bluetooth keyboard and immediately start typing some notes into it like an Alphasmart but without seeing what I'm typing. How can I do that?

The first issue, as far as I can tell, is the screenlock.
The second issue might be delay as the keyboard wakes the phone and switching to a text editor of some kind.

Title: External keyboard, typing blind


问:
Wifi Card / Mobile Hot Spot
I am learning about networking, specifically the data link to session layers. I have an extra android phone I have been learning with on various things, and I am at the point where the application framework layer is simply using other references to really 'do the work' of listening and handling wifi data. I am willing to code with android studio's NDK, or even use the uncompiled kernal code. However, I just need to know where should I look to see the inner workings of how android receives and handles wifi data?

I think what I would like to do as a test project is set up a 'mobile hot spot' that grabs wifi data and sends it to my router. Any help would be appreciated; thanks!

Title: Wifi Card / Mobile Hot Spot


问:
Login to YouTube app with different Google account w/o gmail access
I can login to YouTube with a different Google account, but this account got saved in setting/ system/ account section, which means whoever get access to the tablet can access my gmail also. Is there anyway just login to YouTube only?</p>


问:
Faster Install on a bulk of devices
I am currently faced with installing a large amount of applications on a bulk of devices (100+ at a time).

The biggest issue I am having is the download time of apps and the effect it is having on the WiFi, I am looking for a solution to this, I looked into side-loading via usb but this was just as long to plug in each device and then install the APK individually.

Preferably I need a quick way of installing APKs with minimal interaction as I am using an MDM software that limits my access on the device

Thank you for any answers in advance

Title: Faster Install on a bulk of devices


问:
What does the "Save password to Google?" do?
I'm on Android 10 and and after installing the Uber App, I get the "Save password to Google?" prompt. But since I'm a not a huge fan of the Google megapoly, I'm reluctant to say yes, when I have no idea where my password will end up.

What does the "Save password to Google?" actually do? (and where is it saved?)


问:
How to determine if an android application uses Trusted Execution Environment (TEE) and Secure Element (SE)?
I have gone through questions One and Two. But still I have an additional question.

How do we find out that an android application uses Trusted Execution Environment (TEE) and Secure Element (SE). Particularly a hardware backed environment.

Thanks


问:
Touch doesn't scale according to the changed resolution on Android Q/10
I have an android device with a resolution of 1080px2160p and an aspect ratio of 18:9. I downloaded a resolution changing app from play store by the name of DPI Changer. It changes the device resolution and DPI to whatever values you input. I have tried changing resolution to 1080x1920, 1080x1080 and 720x1280. The resolution changes without any issues but the touch is not scaling properly according to the resolution [ the touch issue happens only when the device is in reverse landscape mode ]. There's a distance of 120px between the actual area touched and the area registered by the device. I have tried several different apps but all of them give the same issue. I am rooted and willing to try anything that would fix the problem.</p>


问:
How to root Huawei RIO-L01 (Android 6.0.1)?
I need to gain root access in Huawei RIO-L01 phone with Android 6.0.1 (Marshmallow). I have tried installing King root, Kingoroot, Towel root and Frama root apps. All these apps failed either because the device version isn't supported or due to some internal failure. Kingorrot android app for windows doesn't get downloaded. I have also followed some tutorials online but none worked out. Mostly options require payment for acquiring the bootloader code.

Is there any method to root Huawei phone with Android 6.0.1 without purchasing boot unlocker codes?

The links that I have gone through are the following:

https://forum.xda-developers.com/t/root-with-twrp-recovery-for-g8.3298392/page-6

http://www.getdroidpro.com/huawei-g8-rio-l01-m105-root-via-magisk/

https://www.youtube.com/watch?v=5jFKJEsuir8

https://root-android.kingoapp.com/huawei/how-to-root-g8.htm


问:
Samsung Galaxy Tablet E, Model SM-T377W Unable to Factory Reset
I'm able to get to the menu Android Recovery when I select Wipe data/ factory reset but**** the yes or no option does not appear, and tablet reverts back to lock screen. Then I tried to clear cache (delete) and the yes no option was present so I cleared cache and again tried to factory reset/wipe data again Yes / No option failed to appear.  Bottom of screen says         No support Single SKU,        E: ensure_path_unmounted Failed tounmount/ easy (DeviceFailed to find) misc. Partitions,   and back to lock screen.

Any ideas or answers would be greatly appreciated- thanks, Tamara


问:
I changed Mainboard in S6 its wrong country code and does not work now what?
As above the board was locked to AT&T but i got the code for that I put my open sim card in it , it picks up wifi and looks like network signal but when i try to phone with it is says dialing ...dialing and hangs up. any help would be great !</p>


问:
Wi-Fi Multimedia (WMM) causing a 100ms latency overhead on Android device
So the issue is that I have a Samsung M01 (Android 10) which is having a 100ms overhead latency.

Basically pinging the router gives me a average of 110ms of latency.

So after going around tweaking many settings I finally isolated the problem to the WMM setting.
The lag only happens when WMM is enabled so disabling it fixes the problem.
The problem with disabling WMM is that after that my router only goes at a extremely slow 14Mbps Disabling WMM causes Wi-Fi Speeds to drop to 14Mbps

Also another thing I noticed is that this latency overhead only happens when I am connected to a mobile tower (tested by enabling airplane mode )

The latency was monitored while I was playing a game, Downloading some files on a Wi-Fi call and it doesn't go below 100ms. But there are some random times when it starts behaving properly and gives me a latency of 2 to 5ms

Note : The ping monitoring was done by pinging in the local network.
This problem only occurs on my Samsung android device (It also occurs on another Samsung device (Samsung On7 Pro Android 5) but not on the Lenovo device I own). This doesn't occur on any PC/Laptops I have access to.

So does anyone have any suggestion on how to fix this issue?
Thanks in advance.


问:
Why my SD card name is not the same as I format it?
I formatted my SD card into 2 partition. The first one is exfat and the second partition is f2fs.
I renamed the first partition as "Limbo" and the second as "Saint".

On Linux it shows both name but on the android is different, the first partition is "Limbo" and The second partition is "SanDisk SD Card".

Is there's any reason why it is not the same?

More description:
image
using Gnome disk


问:
How to format SD card second partition as internal storage
I formatted my SD card into 2 partition. The first one is exfat and the second partition is f2fs.

I want to format the second partition as internal storage using built in storage setting, but when I do that the whole SD card get formatted.

How do I format the second partition as internal storage without losing the first partition data?


问:
Is Android 10 unrootable?
I'm trying to root my device but after doing so much research, I've found that the rooting apps either don't work because it was made for an older version of android, it found that it's not rootable at all from the info given (such as android version and model number), or the download button just doesn't work. I've tried apps like One Click Root, Framaroot, Root Master, and Kingo Root. So I came here to look for an answer. Is it possible to root my phone in anyway, no matter the method? Below is some device info:

```<code>Model number: Samsung Galaxy S9 (SM-G960U)
Android Version: 10.0
</code>```

If any more info is needed, please let me know in the comments. Thanks!

Title: Is Android 10 unrootable?


问:
How to remove DuckDuckGo browser from ArrowOS?
I recently installed ArrowOS on my phone but it comes with the duckduckgo browser which really annoys me with constant notifications and overall I hate it.

How do I remove it safely from the system so that I don't get stuck in a bootloop?

I had already tried what @Firelord suggested in the comments before opening this thread but got stuck in bootloop. I have encountered similar situations with other devices too and will appreciate any help I get, whether they be step by step tutorials or general advice on how to approach this kind of problem.

Needlessly to say I have root access and have Magisk installed.


问:
How to pull within adb shell
I didn't find a way to use pull command within adb shell.  I'm using adb from version 30.0.5
so pull command doesn't seem to exist within shell.
adb pull doesn't work neither pull only.

Probably it's part of some other command like list packages is

```<code>pm list packages
</code>```

Thanks

Title: How to pull within adb shell


问:
Is it possible to get vendor-specific files (e.g. drivers) from a phone and use them in combination with AOSP?
I was wondering whether it's possible to get these files, because to use AOSP on a device, you need these even just to boot. They aren't publicly available from some vendors (IIRC Google provides them?), so I thought about getting them directly from the Android device. I have found some answers regarding where they are, but I don't know, if it's possible to use them from there, or even if there's an option to.

I know there are existing custom ROMs such as LineageOS, which for each device work out of the box, so that isn't a problem, regarding devices they support. But what about devices they don't support? For example the 2020 Samsung Galaxy Tab A7. They support the 2016 version, but not the 2020.


问:
How to pull app data from the phone (without root)
I'm trying to pull down app from the phone, and see the files within

First I used App Inspector to get a package name.

Then few options to get the actual apk down, but no luck.
So I"ve done

```<code>adb shell
pm list package health
</code>```

so it listed Samsung Health  as com.sec.android.app.shealth
Then outside the shell I tried backup

```<code>adb backup -f SamsungHealth.ab com.sec.android.app.shealth
</code>```

Provided PIN on the mobile, so it downloaded but the file is tiny 500b.  I tried to tar it but no luck.

```<code>dd if=SamungHealth.ab bs=24 skip=1 | openssl zlib -d | tar -x
</code>```

or

```<code>dd if=SamungHealth.ab bs=4K iflag=skip_bytes skip=24 | openssl zlib -d > SamungHealths.tar
</code>```

but either say that zlib error  (Fedora 32, with zlib and openssl installed and tar works normally otherwise

```<code>140635897317184:error:29065064:lib(41):bio_zlib_read:zlib inflate error:crypto/comp/c_zlib.c:400:zlib error:data error
</code>```

I tried other option within adb shell

```<code>adb shell
run-as com.sec.android.app.shealth
</code>```

error - run-as: package not debuggable: com.sec.android.app.shealth

so I couldn't even continue to go and see the folder

```<code>cd /data/com.sec.android.app.shealth
ls
cp ....
</code>```

to list files...  I tried for several application not systemic, user installed but same issue

1.) So, Is it possible to see files of particular app at all if not rooted?

2.) Why backup so small even though each app had 150Mb + data?

3.) Any other way to open backup file, as it looks like is not a tar archive convertible?

Thanks


问:
How do I keep a .pdf open/quickly accessible
When I open a .pdf, such as a longer article, I'd like to keep it open, in the sense that it's available in the recent apps list. How do I do that?

The problem in more detail: say I open article.pdf with the default drive .pdf viewer. I read a part of the article, and then do something else on my phone. Later, maybe the next day, I'd like to continue reading where I left off. However, by this time the pdf viewer has dropped out of the recent apps list, and then only obvious way to find the file again is go find article.pdf from the downloads folder and open it again. In the worst case, the viewer has forgotten where I left off and I need to scroll through the file to find the right place to continue.


问:
Printing from android device using a usb printer without using third party print server
I would like to use a Brother HL-L2300D printer (USB printer) to print from my phone and tablet in my home network for convenience without the document going through a third party server or first turning on a PC. Right now I have connected the printer via USB to my router a FritzBox 7530.

I tried printing a test page with the app PrintBot (not yet purchased), which did work but I'm not so sure whether such an app ends up sending the documents to a server in order to process it to be able to print it, which I do not want for privacy reasons.
I also tried Let's Print Droid  but it does not work (probably because it seems to have no driver for low end Brother printers?).

I would prefer an open source app or at least an app that does not send the documents I'm printing (paid is fine) to a third party server.
If it really is not possible to print with this printer from an android device without a print server first processing the document I'll either just continue to turn on my PC every time when I need to print (when it's not already on anyway, obviously) something or buy a Raspberry Pi and run my own local print server.


问:
How to completely backup every single piece of data on samsung s9
I want to do a full backup of my phone but backing up via the cloud doesn't backup everything and backing up via sd card doesn't backup everything either. If you tried to backup via any of these options, the screen will give you a small link containing the things that it won't backup. However, the items excluded from backup are different. Do you think if I tried to backup via both options it will cover everything on my phone? Or is there another way to achieve this?</p>


问:
Prevent Wifi and mobile broadband from being turned off when phone is locked
On my old android 10 phone (an LG) if I pull down the shade when the phone is locked and try to turn off wifi or mobile broadband, it asks me for my password.  My new phone doesn't do that.  Is that a setting somewhere? or do the manufacturers change that for you?

--

Actually my old phone also doesn't let me power it off without the code.


问:
Error 403 and 192 on Google Play
When I try to install an application with Google Play I always get errors 403 and 192. It only happens when I try to install new apps, these errors do not appear when updating apps.

I have already deleted data from Google Play and Google Play Services, I have even logged out of all my Google accounts but I still can't install new apps. What should I do? I use Huawei Nova 3i from China, and Google Play worked perfectly until a few months ago.

Title: Error 403 and 192 on Google Play


问:
Is there a way to unlock stock miui phone after forgetting password?
I have stock xiaomi mi 8 without any additions. I changed my password, and after 3 days of not typing it, I realized that I forgot the new password. I know some words etc, which are there, but I can not guess it.

Is there any way how to make backup? Through the xiaomi mi, or some other service? I thought that it is possible through google, but not anymore. Kinda bummer.

I did not know that security on android moved so much. :-)

Is there any way to save the data and guess the password on some, I don't know, emulator/etc?


问:
Script to act as keyboard for android device
TLDR: I need to create a keyboard interface to android, does this already exist? or am I going about this the wrong way?

I'm running tests from my computer that require me to interact with an android device. What I would like to do is write an application that runs on my testing computer that can talk to my android devices as a mock keyboard. Right now my testing methods are, my desktop app runs, returns a string of text, I type string of text into application on android device, android devices does its thing (posts modified text to cloud datastore), desktop app gets value from datastore, and repeats.

I would really like to take the manual step out of the testing procedure. I had some ideas on how to control the android device's keyboard using an arduino with the keyboard library, but I would think I could do this with a just a usb between the testing computer and android device. I've looked around online but most forms I'm finding are talking about using an android as a keyboard for a pc (which is the opposite of what I need).


问:
I cant find firmware for RCA Tab voyager android go edition
In my tab's recent update it does run to problem the first thing I got was the tab never opens to the main screen(ui) it just stacked to manufacture logo page then after a week instead of stacking it start showing this kind of error
the thing I planned to do was flashing it unfortunetlly I cant find the same firmware as in my tab I searched and got http://gofirmware.com/post/rca-voyager-rct6873w42bmf8 still it doesn't work the download button is full of redirection instead of providing download link.
So finally, the idea it came to my mind was to download and flash the nearest version and model possible from android MTK then I selected rct6873w42m f7 which has the nearest android v(7.0) .
however the problem are still there while flashing

I have tried: rebooting, repluging usb, removing batteries but none of it work
it kinda showing the version are not meting
what should i do now?

models:

android v : android go edition with v8.1 (oreo)

tab model/v: RCA voyager model

rct6873w42bmf8; from the boot page

rct6873w42; from the back of the tab


问:
Your device isn't compatible with this version - Play Store
I am the developer of an app, I have published the APK to the Play Store's Internal Testing channel. I added the Google account of test device B to the email list. For some reason, it shows 'your device isn't compatible with this version' when I try to install my app from the Play Store. I can sideload the APK generated by Android Studio without any problems...

I can install the app from the Play Store on my Galaxy Note 20 Ultra (test device A) but not on my Zebra TC26. Even though the device catalog in the Google Play Console shows the device is compatible with my app.

What's going on here?


问:
How to reopen 1000 synced Opera Tabs from a different device?
Last time, I could simply copy the appstate.bin file to the new device, as described in this Q&A. But this time, either my backup is too old or something else changed. Copying that file has no visible effect.

However, I have synced my open tabs to Opera's servers. On my freshly reinstalled phone, I can still see the "tabs open on a different device" which is that same phone pre-reinstall. I can also view the list of open tabs on www.sync.opera.com/tabs.

How can I get all of them open on my phone again? I don't want to manually choose each one until the 1811 tabs are opened. It is also possible for me to view the same list in opera on desktop under opera://activity.

I have root access on my phone.

Seeing the number, I'm reconsidering whether I should even bother, since I will probably never look at most of those again. But I'm still curious if there is an easy way of restoring those.

The official opera forums don't sound like that feature exists.

When I right-click > save as on the opera sync website, I get the full list in a single line of html (without newlines).
Each (I hope) entry is set up like this:

```<code> <div>
 <img class="Page_favicon__1jni8" src="https://www.sync.opera.com/tabs" alt="">
 <span class="Page_title__1tce_">Solved: Bluetooth volume defaults to maximum on each new connection | Android Development and Hacking</span>
 <span class="Page_url__3Wp3E">https://forum.xda-developers.com/oneplus-5/help/bluetooth-volume-defaults-to-maximum-t3641676/amp/</span><hr></div>
</code>```

So if we knew how to automatically open the tabs on the phone given the URLs, extracting them should not be too hard.

Body:
Last time, I could simply copy the appstate.bin file to the new device, as described in this Q&A. But this time, either my backup is too old or something else changed. Copying that file has no visible effect.

However, I have synced my open tabs to Opera's servers. On my freshly reinstalled phone, I can still see the "tabs open on a different device" which is that same phone pre-reinstall. I can also view the list of open tabs on www.sync.opera.com/tabs.

How can I get all of them open on my phone again? I don't want to manually choose each one until the 1811 tabs are opened. It is also possible for me to view the same list in opera on desktop under opera://activity.

I have root access on my phone.

Seeing the number, I'm reconsidering whether I should even bother, since I will probably never look at most of those again. But I'm still curious if there is an easy way of restoring those.

The official opera forums don't sound like that feature exists.

When I right-click > save as on the opera sync website, I get the full list in a single line of html (without newlines).
Each (I hope) entry is set up like this:

```<code> <div><a class="Page_clickable__2tY0h" href="https://forum.xda-developers.com/oneplus-5/help/bluetooth-volume-defaults-to-maximum-t3641676/amp/" target="_blank" rel="noopener noreferrer nofollow">
 <img class="Page_favicon__1jni8" src="https://www.sync.opera.com/tabs" alt="">
 <span class="Page_title__1tce_">Solved: Bluetooth volume defaults to maximum on each new connection | Android Development and Hacking</span>
 <span class="Page_url__3Wp3E">https://forum.xda-developers.com/oneplus-5/help/bluetooth-volume-defaults-to-maximum-t3641676/amp/</span></a><hr></div>
</code>```

So if we knew how to automatically open the tabs on the phone given the URLs, extracting them should not be too hard.


问:
How to determine which app or service is frequently writing to storage and causing lagging?
When I turn on the screen on a sleeping (but not powered off) high-end Samsung Android 7 Nougat device, the device is often very unresponsive (lagging) for 20-200 seconds.

Using the excellent Simple System Monitor (SSM), I can see that it's not a CPU or RAM issue.  There also is only minimal network activity during this time.  The issue appears to be something writing to internal storage.  In all the SSM graphs, it's the only graph that shows a high level of activity during the unresponsive period.

How can I determine which process is performing all that writing to internal storage ?  The device is not rooted, nor does it have external storage.


问:
How to Transfer Files Into Chromecast with Google TV?
The new Chromecast with Google TV has a few gigs of free storage space but I can't figure out how to place files in there? There does not seem to be an obvious way to do that but it lets people install VLC which, of course does not find anything,

How do I load media files onto the Chromecast with Google TV? If there is anything to do so that they are visible to the installed VLC, that would be good to know too.

NOTE: Posted this a few days ago on StackOverflow that has some Chromecast related questions but there were no answers. I will delete one of the two questions when there are answers on one.


问:
Other than advertising ID and Android_ID, what other identifiers could an app use from the Android system to identify me?
Ignoring information I supply the app (such as my email address or phone number), what other identifiers could an app use to identify a user?

I'm referring to a modern app running on Android 10.


问:
How to handle hidden files and folders (which begin with a period/dot) when backing up Android to a Windows NTFS volume?
Over on Superuser, I asked about whether or not it's okay to have filenames and/or folder names that begin with a period (dot) on a Windows NTFS volume.

The immediate response I received was to avoid doing this.  Update: The author of that answer graciously changed his answer, and is now indicating that it is no problem.  So I think my question is now moot, but I'll leave it up for a few days to see if there are any more updates or commentary here.

What's an effective way to backup Android hidden files and folders (which begin with a period) onto a Windows NTFS volume?

The person answering my question on Superuser recommended renaming the files on Android, if possible.  Well, that's certainly possible.  It involves these steps:

Finding every file/folder that begins with a period

Making a copy of each file/folder found

Renaming each file/folder copied to a unique name that does not begin with a period

Backing up the copies (most likely via FTP)

Deleting all the copies

Ugh.  Is there a better way to accomplish this task?  And if not, is there a way to automate all this work?


问:
Are these files safe to delete on android?
Whilst I was deleting files on my android to clear up some space; I came across two strange files. One was PubmetricinstalledList and the other was PubmetricmoreApps. The first file contained two separate files which were a .str file and a .tss file. The second file had many folders with all titled with three number ranging from 500 to 900 and inside of them were folders with more random numbers, and inside those folders were two files which were a .ibm file and an .jsn file.

Does anyone know what these files are, and if so are they safe to delete? Sorry for my bad explanation I am mostly curious on what these files are since I couldn't find anything online about them. Thanks!


问:
How to know if mediatek vcom drivers is installed on my pc
I've just installed mediatek vcom driver on my pc, to use it in flashing mediatek based firmwares. But is there any way I can know if it truly installed on my pc without plugging a mediatek phone for recognition, maybe through control panel or device manager or somewhere else please.</p>


问:
How can I transfer tab data from the Chrome App to another phone - including back and forward data?
So my nexus 6p is getting on in years, and I'd like to back up my chrome tabs onto another phone. I'm aware there's a sync function, but that:

Does not cover the back and forward data from each tab, and

Does not seem to go past a few dozen tabs - I have around 1000+ tabs
open.

Is there anything I can do to move or transfer the data, or should I just get to searching through each tab and copy-pasting them? Also, the phone isn't currently rooted from what I recall - I'm willing to try it but I've been told that may be counterproductive and likely wipe the data. Any help would be greatly appreciated!


问:
Screen becomes black during a call
I am also having this frustrating issue where, during any call dialed or incoming, the screen would completely go blank. Pressing the power button also doesn't do anything.

I have a newly purchased Nokia 5.3 and it was updated from android one to Android 10. The problem occurred one week after! Any help please! Noting that I’m not an Android expert!

Title: Screen becomes black during a call


问:
Will play services run on a dual-boot device with 2 roms once I boot into a rom without play services installed?
I have an OnePlus5 device with installed lineageOs. Because of my company's and software development needs I need to run apps that require play services. But I do not want to run all over the time.

Therefore I thought to dualboot the OnePlus 5 with the stock rom thewrefore there will be 2 roms in my device:

The stock one with play services where apps will run.

The lineageOS one that wi will use personally wiuthout playservices.

But once I boot into lineageOS would result running the playservices as well?


问:
Repeating error on logcat: "FingerGoodix: Useless INT"
I have a problem with a fingerprint scanner. It doesn't work no matter what firmware I use. I flashed different fixes but it didn't help. I captured a log and found these repetitive lines:

```<code>02-10 14:23:33.666  2432  2432 D FingerGoodix: Enter sig_handler ------<<<<<< ret = 0
02-10 14:23:33.667  2432  2432 D FingerGoodix: sig_handler 0x0126 = 0x0
02-10 14:23:33.667  2432  2432 D FingerGoodix: Useless INT
02-10 14:23:33.667  2432  2432 D FingerGoodix: Exit sig_handler ------>>>>>>
</code>```

(Full log on https://paste.nomagic.uk/?9b40ef80e8a1caf8#8P3KTywk1M2Nw7hVEVe4uJT2uJJ9GPiZ3dUMFGVASMC9)

The fingerprint sensor worked with the original firmware, but when I flashed unofficial firmware and then tried to flash the original, it ceased to work.

So, can anyone explain what's wrong with it? I tried to google the error but didn't find anything useful.


问:
Where to find webview-command-line for retrieving netlogs
I need to get netlogs for the Android webview used by my application.
The chromium describes few steps to do so. It required userdebug build for which I am using emulator.

But the commandline flags need to set using webview-command-line . The path /data/local/tmp/webview-command-line doesn't exists.
There is nothing inside. /data/local/tmp folder.

Can someone please guide me to how set the commandline flags.

Regards


问:
Disable avb/dm-verity manually on super partition
my doogee s96, with the TWRP no more able to boot, probably due to the dm-verity check.

I tried several things, install Magisk or patching boot.img, but I always failed. The phone starts and suddendly swicth to TWRP without launching Android.

With the suggestion of @alecxs I pulled the super partition through adb and umpacked with lpunpack.

The idea is to manually disable the avb/dm-verity control.

Now I have product.img + system.img + vendor.img.
I can open them with 7z and, for instance, i found many lines on /vendor.img/etc/fstab.mt6785 using avb:

```<code>system /system ext4 ro wait,,avb=vbmeta_system,logical,first_stage_mount,avb_keys=/avb/q-gsi.avbpubkey:/avb/r-gsi.avbpubkey:/avb/s-gsi.avbpubkey
vendor /vendor ext4 ro wait,,avb,logical,first_stage_mount
product /product ext4 ro wait,,avb,logical,first_stage_mount
</code>```

or the system.img/init.rc with the line

```<code>exec -- /system/bin/fsverity_init
</code>```

and system.img/system/bin/fsverity_init:

```<code># Enforce fsverity signature checking
echo 1 > /proc/sys/fs/verity/require_signatures

# Load all keys
for cert in /product/etc/security/fsverity/*.der; do
  /system/bin/mini-keyctl padd asymmetric fsv_product .fs-verity < "$cert" ||
    log -p e -t fsverity_init "Failed to load $cert"
done

# Prevent future key links to .fs-verity keyring
/system/bin/mini-keyctl restrict_keyring .fs-verity ||
  log -p e -t fsverity_init "Failed to restrict .fs-verity keyring"
</code>```

The question is:

Is it possible to manually edit the imgs, repack the super and adb push it to make my phone start again?

What should I do?

Thank you in advance!

State of the art:

from adb i pulled the superpartition from the device

adb pull /dev/block/platform/bootdevice/by-name/super super.img

i extracted it with lpunpack in two folders:

```<code>./otatools/bin/lpunpack --slot=0 ./super.img ./superA/
</code>```

mounted and enlarged the partition + edited the fstab.mt6785

```<code>sudo mount -t ext4 -o loop,rw,noexec,noatime vendor.img /mnt/vendor
sudo dd if=./vendor.img bs=1MiB of=./vendor.img conv=notrunc oflag=append count=5 #to add 5MB
sudo losetup | grep vendor #get the right loop device, in my case loop25
sudo losetup -c /dev/loop25
sudo resize2fs /dev/loop25
sudo vim /mnt/vendor/etc/fstab.mt6785 #removed the avb options in vendor, system and product
sudo umount /mnt/vendor
</code>```

Following this guide, I built a new super.new.img:

```<code>$e2fsck -yf vendor.img
$resize2fs -M vendor.img
$e2fsck -yf vendor.img
$stat -c '%n %s' *
super.img 3758096384
product.img 1596944384
system.img 1128718336
vendor.img 544976896

$../otatools/bin/lpmake --metadata-size 65536 --super-name super --metadata-slots 1 --device super:3758096384 --group main:3270639616 --partition system:readonly:1128718336:main --image system=./system.img --partition vendor:readonly:544976896:main --image vendor=./vendor.img --partition product:readonly:1596944384:main --image product=./product.img --sparse --output ./super.new.img
lpmake I 02-17 12:18:27 2646704 2646704 builder.cpp:1012] [liblp]Partition system will resize from 0 bytes to 1128718336 bytes
lpmake I 02-17 12:18:27 2646704 2646704 builder.cpp:1012] [liblp]Partition vendor will resize from 0 bytes to 544976896 bytes
lpmake I 02-17 12:18:27 2646704 2646704 builder.cpp:1012] [liblp]Partition product will resize from 0 bytes to 1596944384 bytes
Invalid sparse file format at header magic
Invalid sparse file format at header magic
Invalid sparse file format at header magic
</code>```

even though the size of super.new.img is not the same of super.img (is it normal??)

```<code>$stat -c '%n %s' super.new.img
super.new.img **3248851200**
</code>```

when I flash it with adb the phone goes straight to the recovery without booting android. Please note that 3248851200 is not divisible by 512, which is a requirement of lpmake....

Any suggestion?


问:
How to enable ajax access to local files in any Android browser?
On Desktop, some browsers provide an option to enable ajax access to local files. For Chrome, it's the command line option "--allow-file-access-from-files". For Firefox, it's the config variable security.fileuri.strict_origin_policy. By enabling ajax access to local files, we can use javascript to load local files dynamically, which is essential for developing no-backend web apps.

Is there an equivalent way to enable ajax access to local files in any Android browser?


问:
USB OTG flash drive as internal storage?
I happen to have a USB and an OTG that I got from a friend and I'm now low on storage due to apps size increasing because of updates.... SD cards costs a fortune in my place so I don't plan on buying one....

But is it possible to use USB Flashdrive as internal storage so I can move my apps to it?


问:
Empty ramdisk in boot.img
I have a copy of the boot.img from my HTC M8 one.

I unpacked it and discovered that it is mostly empty directories and one binary "init" file. I was hoping to find an init.rc in there.

Any ideas?

```<code>:/tmp/ramdisk$ cpio -idv < ramdisk.cpio
apex
debug_ramdisk
dev
init
mnt
proc
sys
2690 blocks

:/tmp/ramdisk$ find
.
./init
./mnt
./ramdisk.cpio
./proc
./debug_ramdisk
./dev
./sys
./apex
</code>```

Title: Empty ramdisk in boot.img


问:
How to find out which app icons disappear after updating?
It happened a few times already that after updating my apps, I notice a gap on my homescreen where an app icon is missing (normally I have it completely filled so a single missing icon is easily noticed).

Is there a way to find out what happened to the app, and more importantly, which app it was? It's hard to keep track of all the stuff I have installed, but the apps I have on my homescreen are normally at least somewhat essential so I'd like to make sure I'm not missing anything important without knowing.


问:
Is there a way to download and use an app from Google play store with the creators of the app getting any information about me?
Basically without the app knowing anything about my Google account and consequently anything else other than the information I directly provide it.

Is there a way to achieve that?

Phone is rooted.


问:
How can I install and use apps on my phone with neither of them knowing about the other?
For example I want to install app Y on my phone, but I don't want my Google account (which I'm using to use my Android) to know that I'm using the app or any information that I enter in it...and I also don't want the app to be able to pull any info from my Google and know anything other than what I directly feed it. Basically both of them living in parallel dimensions completely oblivious to one another.

How can I achieve this?

Android 7 | Moto C Plus | Rooted


问:
Display Text Message on Lock Screen
Is there a way to display unread text messages on the lockscreen? </p>

<p>The device I'm using is a Samsung Galaxy Tab 7 Plus. </p>

ContentLicense: CC BY-SA 3.0

Title: Display Text Message on Lock Screen


问:
Cant delete system files on rooted phone
I'm using zarchiver as a file managing app on my rooted phone... I cant delete some specific app folders in

/system/app              even though I remounted it as rewritable.... in rewritable it will show delete option but when you choose it it wont actually delete it....

context: I want to delete some APK folder of some bloat wares like google or You tube app


问:
How do I delete a word from auto-correct?
So I'm trying to remove this impropriate word. Not gonna show you the word because it's impropriate. I tried many tricks, I tried long pressing and it didn't do anything and I tried to clear the google keyboard's data but I have a different phone so it doesn't work. The device I'm using is
a Vivo phone, the model number's 1811. Do anyone know how to remove words from the auto-correct? This is all the information I got.

Update,
It turns out I don't have GBoard so I downloaded it. I've been using my default keyboard the whole time. Sorry about my mistake.


问:
Is data recovery possible in encrypted phone?
I need a suggestion!
Tomorrow I am giving my phone to service centre for repairing my broken camera. I am feared that whether they can access my files or not?
My phone is on android 10 out of the box and it is encrypted by default. I am going to reset my phone before giving it to the service centre. Is it possible to recover data on a encrypted phone?</p>


问:
How to install a post-market operating system on a Samsung Galaxy S7 with a broken screen that has "OEM unlock" still disabled?
I want to use my old Samsung Galaxy S7 (with a broken screen) as a headless device in my home network.

(Rationale - for the curious readers: Even with a broken screen it could possibly become a Bluetooth audio receiver (A2DP sink) or a CCTV-like device. And with its multiple CPU cores, I could even make it part of my home Kubernetes cluster to crunch some CPU-intensive tasks. This way it can remain of service in its afterlife.)

To prepare the device, I would either like to install PostmarketOS or Lineage OS on it. The installation procedures for both operating systems require installing/flashing TWRP onto the recovery partition. (Installation guides: Lineage OS; PostmarketOS)

Unfortunately, the device has most likely never been OEM unlocked before the screen broke. Based on my reading so far, this seems to be a pre-requisite for any kind of image flashing. At least, this is the most likely reason to me why all my flashing attempts failed. (See below what I've tried.)

Since the screen is broken, I cannot enable "OEM unlock" via the normal user interface-based procedure.

Now my questions are:

Is "OEM unlock" being enabled a pre-requisite for flashing custom images onto my Samsung mobile device?

How do I enable "OEM unlock" without having access to the device's screen?

Since I'm not too attached to the device, I'm really willing to go far in experimentation. Any data on the device has most likely become inaccessible in my previous flashing attempts already (I cannot check with a broken screen), so keeping data is not a concern. I'm also willing to cut an USB cable open to solder myself an USB/UART connector cable if necessary.

Here's what I've already tried:

1. Directly using PostmarketOS's flasher functionality (which uses Heimdall), i.e. without using TWRP

```<code>pmbootstrap init
    [I cut the output of the installation wizard]

pmbootstrap install
    [I cut some of the output]
    [17:06:59] (native) format /dev/installp1 (boot, ext2), mount to mountpoint
    [17:06:59] *** (4/4) FILL INSTALL BLOCKDEVICE ***
    [17:06:59] (native) copy rootfs_samsung-herolte to /mnt/install/
    [17:07:07] (native) make sparse rootfs
    [17:07:13] *** FLASHING INFORMATION ***
    [17:07:13] Run the following to flash your installation to the target device:
    [17:07:13] * pmbootstrap flasher flash_rootfs
    [17:07:13]   Flashes the generated rootfs image to your device:
    [17:07:13]   /home/hauke/.local/var/pmbootstrap/chroot_native/home/pmos/rootfs/samsung-herolte.img
    [17:07:13]   (NOTE: This file has a partition table, which contains /boot and / subpartitions. That way we don't need to change the partition layout on your device.)
    [17:07:13] * pmbootstrap flasher flash_kernel
    [17:07:13]   Flashes the kernel + initramfs to your device:
    [17:07:13]   /home/hauke/.local/var/pmbootstrap/chroot_rootfs_samsung-herolte/boot
    [17:07:13] * If the above steps do not work, you can also create symlinks to the generated files with 'pmbootstrap export' and flash outside of pmbootstrap.
    [17:07:13] NOTE: chroot is still active (use 'pmbootstrap shutdown' as necessary)
    [17:07:13] Done

pmbootstrap flasher
    [17:09:09] (native) flash rootfs image
    [17:09:11] (native) install
    < wait for any device >
    Heimdall v1.4.2

    Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna
    http://www.glassechidna.com.au/

    This software is provided free of charge. Copying and redistribution is
    encouraged.

    If you appreciate this software and you would like to support future
    development please consider donating:
    http://www.glassechidna.com.au/donate/

    Initialising connection...
    Detecting device...
    Claiming interface...
    Setting up interface...

    Initialising protocol...
    Protocol initialisation successful.

    Beginning session...

    Some devices may take up to 2 minutes to respond.
    Please be patient!

    Session begun.

    Downloading device's PIT file...
    PIT file download successful.

    Uploading SYSTEM
    11%
    ERROR: Failed to confirm end of file transfer sequence!
    ERROR: SYSTEM upload failed!

    Ending session...

</code>```

2. Trying to flash TWRP using Heimdall

```<code>heimdall flash --verbose --no-reboot --RECOVERY twrp-3.5.0_9-0-herolte.img
Heimdall v1.4.1

Copyright (c) 2010-2014 Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au/

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
      Manufacturer: "SAMSUNG"
           Product: "Gadget Serial"

            length: 18
      device class: 2
               S/N: 0
           VID:PID: 04E8:685D
         bcdDevice: 021B
   iMan:iProd:iSer: 1:2:0
          nb confs: 1

interface[0].altsetting[0]: num endpoints = 1
   Class.SubClass.Protocol: 02.02.01
       endpoint[0].address: 83
           max packet size: 0010
          polling interval: 09

interface[1].altsetting[0]: num endpoints = 2
   Class.SubClass.Protocol: 0A.00.00
       endpoint[0].address: 81
           max packet size: 0200
          polling interval: 00
       endpoint[1].address: 02
           max packet size: 0200
          polling interval: 00
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Uploading RECOVERY
0%
2%

[...]

98%

100%
ERROR: Failed to unpack received packet.

ERROR: Failed to confirm end of file transfer sequence!
ERROR: RECOVERY upload failed!

Ending session...
ERROR: libusb error -7 whilst sending bulk transfer. Retrying...
ERROR: libusb error -7 whilst sending bulk transfer. Retrying...
ERROR: libusb error -7 whilst sending bulk transfer. Retrying...
ERROR: libusb error -7 whilst sending bulk transfer. Retrying...
ERROR: libusb error -7 whilst sending bulk transfer. Retrying...
ERROR: libusb error -7 whilst sending bulk transfer.
ERROR: Failed to send end session packet!
Releasing device interface...

</code>```

3. Trying to flash TWRP via Odin

Output log:

```<code><ID:0/011> Added!!
<ID:0/011> Odin engine v(ID:3.1401)..
<ID:0/011> File analysis..
<ID:0/011> Total Binary size: 43 M
<ID:0/011> SetupConnection..
<ID:0/011> Initialzation..
<ID:0/011> Get PIT for mapping..
<ID:0/011> Firmware update start..
<ID:0/011> NAND Write Start!!
<ID:0/011> SingleDownload.
<ID:0/011> recovery.img
<ID:0/011> FAIL!
<ID:0/011>
<ID:0/011> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
</code>```

I also tried flashing original Samsung firmware onto my device, also using Odin. That resulted in a "success" message, making me believe that my ROM is not fried (yet).

A similar question with a more narrow focus had already been posted back in 2016. Back then, the answer was "there's no public knowledge how to do this". Since the scope of that other question was focused on a way to enable "OEM unlock" through the modification of a file, I have created this new question with broader goal in mind.


问:
Samsung Galaxy Tab S6 Lite screen turning off in protective case
I have a new Samsung Galaxy Tab S6 Lite with a pen. Also I have a protective book-like case (Aceline Streak STR-008).
The device works fine, except one thing: when I open the case and fold it backwards (I mean flip the front cover backwards behind the back side of the device) - screen gets turned off. It doesn't happen if I just put the tablet onto something. Device doesn't reboot or has any kind of abnormalities with this. When I remove the front surface of the case and let it just hang down freely - the screen turns on.

What can be the reason of this behaviour?


问:
Which files do malware reside in after visiting a malicious site
I've been really on edge about accidently visiting a malicious site in the the past month, so please excuse how badly explained this question may be.
About twenty minutes ago I was visiting a site to help me with something when I was redirected to one of those scam sites which say "You've won a free phone!" Along with two other sites that I did not take the time to check. Imdetiently I left the sites, and went to remove them from my browsing history which seemed to lag a bit while doing so, so I ended up clearing my cache.

My phone began to run alower than usual which from what I've read is a sign of malware installed (?) Currently I haven't seen any new applications installed though I double checked folders and saw one which seemed kinda suspicious which was title ".1VRecord" which had a ton of strange file combination inside. Does anyone have any suggestions on what I can do to double check for malware or what files they would tend to hide in? Thanks!


问:
i cant go to recovery mode NO Command error, Boot-loop
I recently tried to install a custom ROM in my samsung j6+ but halfway through it my PC turned off(disconnected while flashing).
Then the problem starts i decided to reboot my phone but it shows this message
"No command" " #Reboot recovery cause is [[check_bootmode]RebootRecoveryWithKey]#
Block-based OTA
Supported API: 3

MANUAL MODE v1.0.0#

E:Failed to mount / cache: Invalid argument

The error message keeps appearing for just a fraction of a second then disappear and appear again

I tried to go to recovery mode but no luck i cant get to it
I drained the battery to turn off the device then go download mode but after get to it, it also keep restarting

Please help me thanks so much


问:
Home screen wallpaper blurs on Samsung Galaxy S20+
On my Samsung Galaxy S20+, the wallpaper is blurred on my home screen but not on the lock screen.

I saw a similar post to this saying to change your lock and home screen wallpaper to different wallpapers, I have tried changing the wallpaper to something not blurry and it still does not work.

How to prevent blur home screen wallpaper?


问:
Determine Android version on a device that is stuck on lock screen and with FRP
On my Motorola Moto E6 (XT2005-5) that is locked with a PIN I don't have and also with FRP, does "surfna9" mean it is Android 9? If not, where do I look without the PIN to know what version is installed?</p>


问:
Google Play Services has stopped
On my Samsung Galaxy A6 I keep getting the message 'Google Play Services has stopped' Whatever I try to do this message keeps appearing and I cannot get rid of it. I did manage to get into the app, but on trying to uninstall updates got the message 'Uninstall unsuccessful' At the moment this device is totally unusable. 'Send Feedback' does not work. I am unable to access the cache to clear it, so none of the fixes I have seen in previous posts seem to be available. HELP please!!</p>

Title: Google Play Services has stopped


问:
How to unlock with face recognition for multiple users?
We are using our tablet together with my wife. I have added another user profile to the Android tablet (Samsung Tab A7, Android 10). I have switched to her account and we added her face for the recognition.

Question: is there a way to directly unlock the device with either of our faces? Otherwise the experience is awful. I need to turn on the device, click on the profile icon on the top right, catch the correct user in 1 second (otherwise screen turns off), then do the face recognition.


问:
Migrating from broken iOS device, from iCloud Back-up
This webpage below explains how to migrate from an iOS device to Android. My problem is that the iOS device doesn't work anymore. Therefore it is not possible to use the procedure explained there. The data on the iPhone is backed up in iCloud. How can we migrate to android from an iCloud backup (for free)? How can i copy the data on iCloud to my Google Drive and then to my new Android phone?
https://www.android.com/switch/

edit: I tried to use the app "MobileTrans" but it doesn't accept the iCloud Password.


问:
Bluetooth periodically switches off
The Bluetooth on my Android phone periodically switches off.

This is a problem because I've attached a "Tile" to my keys. To find my keys using my phone, and my phone using my keys. And after the Bluetooth switches off, this doesn't work.

phone: Xiaomi Max 2

Android version: 7.1.1

MIUI version: 11.0.2.0

The best advice I've gleaned from the internet so far has been to give the "Bluetooth Share" app all the permissions it needs. This seems to have lengthened the time it takes before the Bluetooth switches off.

Thoughts? Suggestions?

Title: Bluetooth periodically switches off


问:
How to run 64 bit apps on a 32 bit Android smartphone without root access?
I know it's difficult or rather almost impossible to change a 32 bit to 64 bit with or without root but is it possible to run 64 bit apps on a 32 bit Android smartphone without root access ?
I am using Samsung Galaxy J5 Prime.</p>


问:
Is it possible to fix Samsung XCover Pro lock/unlock?
The Samsung XCover Pro advertises a large XCover and Top keys that can be used to wake the device and launch apps with one press. Both have a setting called "Use while screen locked". With that setting enabled, and a PIN and/or fingerprint enabled to unlock the screen, I am unable to wake the device or launch apps from a locked screen as advertised. If the screen is off, pressing the buttons does nothing at all. If the screen is on, I have to enter my PIN first before any app will open, including apps that shouldn't need a PIN, like the camera. Even turning on the screen is a pain. There are two options: 1) Find the impossibly small, recessed wake button on the side, and press it, or 2) Enable "Lift to wake", which makes the phone think you are constantly scanning an invalid fingerprint, so the screen stays on, draining the battery and automatically disabling biometric unlocking.

I just want my Samsung XCover Pro to work as advertised. Has anyone found a solution to this?


问:
Samsung phone with PRELOADED Google items - "Google Play Services keeps stopping" popping up on phone. Have used help centre!
Tried all ways within Google Help Centre to correct this problem.  Google Play Services now shows "Disabled" and "Force Stop" buttons now both greyed out and cannot rectify this latest problem.  Also Google Play Store App will not open at all to show available app.  I don't want to lose any information from my Samsung phone, so I have loaded photos to computer and made a written list of my contacts.
Any help please to rectify the problems with Google on my phone.


问:
Android Chrome Password Pop-up
Does anyone know how to eliminate this annoying pop-up (see screenshot) in Chrome that has a separate window for passwords? I know it can be done but I can't find it and any every time I search for it, the result is only how to resolve the check your passwords compromised passwords pop up from chrome. Thanks in advance.

OwnerDisplayName: JHS

Title: Android Chrome Password Pop-up


问:
How can I enforce Google SafeSearch on Firefox/Chrome?
I'd like to enforce Google SafeSearch on Firefox/Chrome on Android.

Is there any way to do it? For example, if I enable it and then switch to Incognito/Private mode the setting will disappear.

For desktop, there are extensions which enforce safesearch for google. I'd like to have the same behavior on Android.


问:
Galaxy tab charging dock stops charging when USB device is attached
I recently bought this charging dock by Brodit for my Samsung Galaxy Active 2 (v. 3.9.0) with Android 9: https://www.amazon.de/gp/product/B00UASMT2Y/. I was hoping to constantly keep the tablet running at a fixed place.

If I put the tablet in the Charging dock, it starts charging as it should. If I now connect an OTG USB device (namely a SkyController 2 for a Parrot Drone), the dock seemingly stops charging. A measurement of the current between dock and tablet seems to confirm that.
The charging symbol in the tablet still stays on since the SkyController delivers the usual 0.5A. Of course, this is not enough to compensate for the energy lost, so the tablet's charge slowly decreases.

Is it really usual behaviour that connecting a USB device disables charging through the dock and, if yes, is there a switch in Android to change this?

If this is really not possible, is there another solution to keep the tablet charged while using a USB device at the same time?

Thanks in advance


问:
Oneplus 8T stuck in bootloop after flashing patched boot.img
I'm a complete newbie following a guide to root my phone, but it got stuck in a bootloop after rebooting, after flashing a patched boot.img created by Magisk. I have tried many things but with my lack of experience I'm stuck. One guide I'm following for unbricking your phone requires flashing all files from a stock (official) payload.bin file, but I can't run the commands because of a 'critical partition' error.

Running 'fastboot flashing unlock_critical' only prints out the syntax commands as if I just typed in 'fastboot' as is... I'm stuck, I'm clueless and I'm beginning to panic ._.


问:
Android phone as 4G proxy server
I am trying to turn my old phone (Xiaomi Mi 5) into a 4G proxy server which I can use with different apps for scraping data, etc. I have been searching on how to set it up and I found some articles, but they are not very clear. I am really a newbie and I have no idea how to set it up. I have bought 2 Android apps: Proxy Server Pro and Servers Ultimate Pro having trouble configuring it.

These are the steps I have followed on Servers Ultimate Pro:

Add a proxy server

In the General tab, I didn't touch anything

In the Rules tab, added a new rule

HOST CONTAINS: I put my public IP address which I found at https://myip.com

REPLY WITH THIS IP: 127.0.0.1 Port: 1080

Now, when I try to test it I, get no connection.

Title: Android phone as 4G proxy server


问:
Is it possible to record uncompressed or > 150000 kb/S video on a smartphone or tablet?
Is it possible to record uncompressed or > 150000 kb/S video on a smartphone or tablet?

If so, how and what devices are compatible? I am able to do this with cheap logitech webcams, however the best I was able to get with multiple smartphones/tablets was with a Moto G, which recorded compressed (mp4) video at 50000 Kb/S using UHD.

Intuitively, I expected to get higher quality video from smartphones and tablets. Am I missing something?


问:
Nexus 7 2013 - stuck at android is starting optimizing apps. trying adb to get the data
I have a 2013 model Nexus 7.
It is running 6.0.1, unmodified with locked bootloader. USB debugging is on.

Battery drained to 0. Charged then the device is stuck on boot loop .. android is optimizing app X of x.
I don't wanna lose the data so I've avoided hard reset.

I've wiped cache more than once.

I tried ADB Commands .. and while on the android is starting I can list the device and I can list the directoies ..

Tried adb pull /
and it return this message.

c:\Adb>adb pull /

daemon not running; starting now at tcp:5037

daemon started successfully adb: warning: stat failed for path /proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/self/task/1208/root/proc/222/task/1208/fd/15:
Protocol not available

Tried shell to see if I can list folders and

```<code>Adb shell ls /sdcard/sdcard
it returns the same message.

c:\Adb>adb shell ls /mnt

asec

expand

media_rw

obb

runtime

sdcard *******************

secure

user

c:\Adb>adb shell ls /mnt/sdcard/
/mnt/sdcard/: No such file or directory
</code>```

Is there any way that I can retrieve the data before hard resetting .. through adb or custom recovery .. or whatever.


问:
How to fix my micro SD card that became a read-only memory card?
Since the Android external memory card has turned to read only (also known as SD card write-protected) all of a sudden, I can no longer add, write, or delete things from it.

How to fix the SD card that mounted as read only?

Is there an application to solve this problem?


问:
How can I relock my Xiaomi bootloader without bricking the phone?
I unlocked the bootloader on my Xiaomi Mi A1, and it boots fine.

However, after I relocked it (using the top answer here) and rebooted, the phone flashed the white Android loading screen then went black. The same thing happens when I try to boot into recovery mode. I can still get into fastboot, though, and am able to unlock again.

How can I lock the bootloader and return to the stock Android that the phone was shipped with? I'm not worried about data loss.


问:
Is it possible to control and transmit electromagnetic radiation of allowed frequency with Android device?
I understand the following things about smartphones

A smartphone has various hardware that functions wirelessly by transmitting and receiving electromagnetic waves.

Things like Wifi, Bluetooth, and phone calling all work by transmitting and receiving electromagnetic waves.

The frequencies that this hardware can emit are fixed. It cannot work in all frequencies. It can work in only part of the frequency spectrum.

Let us take the following example.
I want to use a smartphone to emit an electromagnetic wave of a particular frequency, say X Hz.
If this particular frequency is supported by the hardware, is it possible to control/emit this signal of this particular frequency, like using any apps?


问:
What is the application PlayAutoInstalls
I just updated my device (Xiaomi Mi Lite 10) and found an app with a name that concerned me.
The app name is "PlayAutoInstalls", seems a system app that I never used or installed, but I can't find information about it.

I never install anything outside Play Store, but this is not a guarantee of safety (malware) and I have the feeling that this one is a malicious app.
Any information about it's functionality (name is concerning), and if it's safe to remove?


问:
USB tethered device constantly changing public IP address
I recently switched from iPhone to Android (Galaxy S10e), and use the phone hotspot as my primary internet.

I connect the phone to a gli-net mini router (https://www.gl-inet.com/products/gl-ar750s/) through USB Tether, and from that (only have ethernet enabled on the mini router) to a netgear Nighthawk R7000 router which we use for wifi in the house.

The gli-net router has a firewall rule to keep the TTL at 64 (or was it 65??) so we can continue to get unthrottled speeds.

On the netgear router I have also disabled 2g wifi, and only use 5g.

The problem we have is that our IP address on connected devices changes with each web request. So if we go to https://www.whatsmyip.org, we have a new IP address at almost every refresh.

It seems like there are a few addresses the the laptops rotate between ..*.7/9/15.

The DHCP lease time on the routers is 12 hrs.

Do you have any ideas what I should look at next?

When we connect through a vpn on the laptop (protonVPN for example), our IP address doesn't change at every request.

It worked with the iPhone, so I'm wondering if something is going on in the android I'm not aware of? oh, also, the phone service I'm using only allows 1 hotspot connection, which Android respects. The iPhone ignored that. Do you think the issue could be caused by the phone service + android only allowing 1 device? I assumed that if I tethered to the gli-net that it would see that as my one device..


问:
How to check Knox Warranty status for Samsung Tab S6 (T865)?
How to check Knox Warranty status for Samsung Tab S6 (T865) if it is tripped or not?

I go to recovery screen by Power + Volume Up and from there selecting "Reboot to Bootloader" to go Download screen. In there, there is no Knox Warranty info; it is only says like hold Power + Volume Down for more than 7 seconds to Cancel.

So where is that Knox Warranty status?


问:
How to disable Split Screen view
Hello I have a Galaxy S6 and I was wondering if there was any way to disable the split screen/multi-window option which appears above an app when you press the recents button. Are there any ways I can achieve this? Thanks in advance.</p>

Title: How to disable Split Screen view


问:
Move App Data from SD Card to Internal Storage
TL;DR: Some apps have a little data on the SD and I want to move it to internal in case the apps actually need it. My intent is to use the SD for something else. However, I can't figure out how to move the data to internal.

I have gone into Application Manager and there is a list of apps (it doesn't just list all apps) with data on the SD card. Most say 0.00B but a few say 32.00KB (and it is one or the other, there are no other sizes). I tap on them to access the available options and all I see is "move to SD". I can't find any option to move data in the opposite direction. All of the apps are mostly on internal storage and I am aware from reading other threads that apps can store data in both places at the same time. I have tried searching both on this site and via Google (and Bing). Unless I put quotes around my entire search, the engines find some way to coerce my question into the opposite of what I want. With the quotes, Google gave me two Reddit posts (that is all); neither of which had a solution as far as I can tell.

Main Questions: Is it possible to move the data apps have stored on the SD card to internal storage? If so, how do I do it?

Side Questions: Why are some apps included on the list but with 0.00B? Does that mean the app has an empty folder on the SD card? Or are there files and I am not supposed to see; so it tells me 0.00B? For the apps with 32.00KB, is that just some standard placeholder/empty file or is there a chance the data is actually needed by the apps?

Edit:

In response to Irfan Latif…

I tried to read the whole post but I started getting lost at Android 3.1. You mention that changing protocols now means that the card isn't mounted on PCs. But I don't understand why the way the phone works would impact how a PC interacts with the card. I assume it has to do with the protocol changes but to me the protocols are nothing but names. I simply don't have that depth of knowledge regarding data storage and transmission. Since I can't follow this step, I can't follow anything beyond it either.

As for "Coming to your question:", the main takeaways I got was that you can't prevent apps from writing to SD and that some apps write there just to test availability. Neither directly answers my questions but I can see some potential implications. However, seeing as I am not an expert (else I would not be asking in the first place), I would appreciate it if you could either confirm or deny what I believe your implications are.

0.00B indicates an empty directory likely created to test for external storage

32.00KB could similarly be a dummy test file

Assuming I have correctly deduced what you are trying to imply by redirecting me to the other question, I now have these questions:

Is there a way to check or do I just have to assume the files are dummy files and hope removing them doesn't break anything?

Given that you cannot prevent apps from writing to external storage, does that mean it is impossible to remove an SD card without risking the loss of app data? Given that removable media is meant to be, I don't know, removed, that seems like a rather stupid design decision.

Edit 2:

Thank you all for your patience. Your explanations have helped me learn the key terms to focus on and now I understand things better. Though I still don't fully understand everything in Irfan Latif's reply to the other question.

Based on your replies to the new questions, it looks like the short answer is "No". While I can understand how using a terminal would help clarify the location of the data, I don't see how it would help clarify the content of the data. The exception would be if Android has a dedicated test directory in which data is guaranteed to be non-essential. However, based on what I have read so far from your replies, other questions, and other sites, that is not the case.

You all seem pretty certain these files are just dummy test files. With the apparent lack of any definitive means to make this determination, I guess I'll just have to assume you are right.

I am aware of the implications of using the SD card as adoptable storage. There are millions of articles about that. But even per Irfan Latif's reply to the other question, that was introduced with Android 6; I am talking Android 5. So thanks for the reminder but from what I can tell, the discussion of adopted vs. portable storage is completely irrelevant to my specific situation.

Lastly, just because there is doubt that the GUI would be showing what I claim, I am going to upload a screenshot (or a few) so you can see what I am seeing. I will post them after this edit since I am not typing this on my phone.

 Applications" />

 Applications > Application Manager > SD Card" />

 Applications > Application Manager > SD Card > some app" />


问:
Installing full YouTube app on Tecno phone (Android Go) failed silently
I have a Tecno phone with Android 8.1.0 Go. YouTube Go is my system app, however, I grew tired of using it because of its limited features and decided to install the YouTube app. But that's when the trouble started. The app downloads until 100% and then shows that it is installing and then nothing, nothing at all back to square one, and no error is shown.

I have enough space, I have cleared data and cache for Play Store, restarted the phone, even tried APKs but still, nothing worked.

What could be the issue? The only advice I have received so far is to root the phone. What should I do? Other apps download and install just fine.


问:
How we can know from Download Mode screen if device (Galaxy Tab S6) is factory-new?
[] download screen for my Tab S61

Picture above is from my Tab S6's download screen. Do you see any clue showing that this device is not brand-new? For example anything that should be locked but not locked now or any warranty that has voided or anything other than normal as brand-new?


问:
How may I modify my root filesystem, which is mounted from /dev/block/dm-0, in order to create a mount point or symlink at /usr, on Android 11?
I need a writable /usr directory to run Gentoo Prefix. I suppose that it can be either a symlink to somewhere else or a mount point for further mounting.

Information collected so far:

Since Android 10, remount rw no longer works with root fs.

Device dm-0 is read-only.


问:
Question about spacing in .ttf fonts for android
I've been having trouble setting up a font to work well on my phone. I'm using an app that allows me to load ttf files into my system, the problem is spacing between lines/titles being too large (see attached screenshots).

I'm trying to figure out how to edit the ttf on font forge to resolve this, but it's been to no avail.


问:
Sync exchange with local calendar WITHOUT granting permissions to gmail or Samsung
It's pretty simple, what I want, I think:

1 local/offline-only calendar on the phone (default Samsung app)

1 on-line exchange calendar (automatically synced)

ability to show one or the other or both at the same time in the same view

notifications coming from both calendars, as if they're both local

I do NOT want:

to associate a google account with the phone

the gmail app to be in any way involved

to accept Samsung's request to hold my personal information for 5 years on their servers

any kind of sync involving e-mail, contacts etc etc.

It amazes me that this seems nearly impossible to do. Is it/how?


问:
Would using a VPN, different browser and XprivacyLua prevent a website from remembering me?
Let's say I registered at a website using Google Chrome on my phone, then later on I used a VPN and Firefox restricted through XprivacyLua to access the same website. Would it be able to know that it was me (my) device that accessed it previously? If so, how can I prevent it?

Android 7 | Rooted


问:
How to extract a raw apk out of installed application?(Raw for reverse eng purpose)
So I developed an application but my hard drive failed and I lost access to project resources, but I had it previously installed on my phone through android studio debugging process.

Now I want to extract a raw apk version out of my phone, Is there any way?

NOTE that any regular apk extraction through Google Play applications outputs a ~700kb apk of my project that lacks resources and cant be reversed, while it has to be ~4.4mb.


问:
How do I get full feature list of Wear OS?
I'm developing a custom version of Android system for a 'Android smart glass' device. I'm trying  to customize a new version of Android ROM that suits this type of wearable device.

Needs features such as bluetooth/wifi direct connection, power saving mode, etc.

After researching the Android community, I find Wear OS suits most of my needs. However, I can't get a full feature set of Wear OS.

How do I get a in-depth analysis or something like full featureset of Wear OS?


问:
my device got a ROM flash by the seller prior to my purchase?
I bought a Galaxy Tab S6 a few days ago and I am going to verify if it is really brand-new.

Some facts: The production date of this device is in July 2020 and my purchase date is in February 2021.

First of all, the system date and time is not up-to-date and even confusing. The system date (on the day of my purchase: February 19, 2021) was January 3, 2019 (that is, 7 mounths prior to August 2019 when this device model released by the manufacturer for the very first time).

Besides, the system time doesn't match the device region (UAE) local time and there is about 9 hours difference.

Finally, dates of files in Android folder are mostly January 1, 2019 (which indicates two days prior to my purchase and boot up) and other file dates are for two days later (January 3, 2019) corresponding to when I purchased and booted the device.

Therefore I'm going to conclude that the seller might had flashed ROM into this device a couple days before he sold it to me and this device is not brand-new.

What is your opinion?


问:
Lock computer USB connection
I'm looking for a way to lock computer USB connection with anther password then the regular lock screen password... (or ether disable the usb connection completely without broke the usb port)

There is an app on the play store that called:
Smart AppLock (App Protector) https://play.google.com/store/apps/details?id=com.sp.protector.free

It has the so-called option "USB Connection Lock", but it isn't working...

Some one told me that i need an app or a way that detects whether com.android.settings/.Settings$UsbDetailsActivity

activity is in the foreground or not. If in foreground, than create an overlay or a new activity on top of it which would act as a password lock

but how can i do that?

Title: Lock computer USB connection


问:
SAMSUNG a10s boot loop after TWRP flash
I have bought a SAMSUNG A10s phone and tried to install TWRP according to this instruction. I was able to unlock the bootloader and enter the 'Downloading' mode.

I disabled time sycro and automatic updaten, set the time to a few weeks ago and connected the wifi in order to overcome this issue.

I used a Debian computer and the Heimdall tool to flash this TWRP image into the recovery partition (which replaced the existing recovery.img, I took no backup - daft, I know).

Caused by the unlocked bootloader I got a warning with every startup. The usual key-combination for the bootloader menu did not work. So, after a few boot procedures, I tried the offered option to lock the bootloader and perform a factory reset.

Unfortunately, this brought me to bootloop. I was only able to enter the 'Downloading'-mode again. Now, the bootloader is locked again but the images are invalid. I get this error message:

```<code><!>
Partition recovery
Reason recovery: Eroor verifying vbmeta image: invalid vbmetaheader
SAMSUNG recovery, A107FXXU7BTL1, 36415554R
SAMSUNG vbmeta, A107FXXU7BTL1, 36415554R
</code>```

Quitting this 'Downloading' mode brings me back to the loop which reaches the SAMSUNG logo before it boots angain.

Can anyone explain this situation? Has anyone an idea for a solution? Using Heimdall, I can still read the PIT. So, maybe I can also flash any images. I am very glad for help!

Title: SAMSUNG a10s boot loop after TWRP flash


问:
Installing Android on Nokia Lumia 520 Using MacOS Computer
I am trying to install Android on my Nokia Lumia 520 so I can use it as a hardware device to debug my apps for Android app development. I use a Macbook Air (MacOS), and tried to search for tutorials to install Android on my Nokia Phone, but I can't find any tutorials for MacOS. Can anyone give me the steps for installing it on my Nokia mobile phone?</p>


问:
Recently deleted my AVD and did not get back the 8 GB it took up?
I haven't used Android Studio in a few months so I went ahead and deleted my AVD and system image from the tools menu inside Android Studio. The image deleted fine, however I notice that while the AVD was gone, I did not get back the ~8 GB it took up. I also see that my pagefile.sys has grown to roughly the same size.

Is this due to the AVD using this as virtual memory and not reallocating it back to my hard drive after deletion? I can manually go into settings and change my pagefile.sys size but I want to make sure that this was a result of the AVD initial install before I mess around with my partitions. I vaguely remember Android Studio asking about RAM allocation for optimal AVD performance during the initial install.


问:
MacroDroid - To only allow certain people to automatically answer calls
I'm trying to set up a macro using MacrdoDroid to automatically answer calls whenever they occur. However, I only want it to happen when certain people call me. I've tried adding the person's name to the left of the trigger "Incoming voice/video call", and setting the search term to exact instead of contains, and it just doesn't pick it up. It works fine if only "Incoming voice/video call" is there, but not when I add someone's name.


问:
Can an app find out if the Android phone it's running on supports Bluetooth 4.3 privacy extensions?
I need to find out if the phone my app is running on supports the BT 4.2 bluetooth privacy extensions. If so, it will tell a BT connected device to do the same, if not it will not enable it.

Is there a way to find out by means of a script if the underlying Android supports the privacy extensions?

My assumption here is, based on two low cost phones, that for some mobile phones BT4.2 compatibility is claimed, yet enabling it on the slave device voids the communication with the device.


问:
VoWifi over UMTS/HSPA/LTE on second SIM?
Can VoWifi use the internet connection over the second SIM?

Backstory: a while ago I was traveling abroad. The roaming costs are astronomical. As my ISP provides a VoIP (SIP protocol) service, I installed a SIP client app and configured it to use my ISP account. As it uses internet to communicate, I could use WLAN or the UMTS/LTE network with a local SIM in my phone (I removed my original SIM). So I could make and receive calls on my original phone number without any hassle, for low cost.

Back to today: SIP is phased out and "replaced" with VoWifi.

The question: if I am abroad, and there is no WLAN available, can I use a second (local, read: cheap) SIM (in a dual SIM phone) to connect to the internet over UMTS or LTE and use it to make and receive calls with my original phone number (using VoWifi)?  Or is VoWifi strictly WLAN-only?

In other words: can I have effortless and cheap connectivity for my regular phone number abroad, like I could using SIP?


问:
Applications on Android are not using Certificate Pinning
I'm doing a study for university and part of this study is to gather a group of android applications and check which of these applications use Cert Pinning. I am doing this by using fiddler as a proxy(I have also download fiddler certificate on my Android Phone) the applications which work normally do not have certificate pinning while the others who stop working do have certificate pinning.

The problem is that all the applications are working normally, this include applications such as youtube, gmail, play store. This means I can capture the traffic on Fiddler from these apps. My friend tried this as well on a more modern Android device and he is not able to capture any traffic from the mentioned apps and also from other apps which most probably have cert pinning. However I am able to capture from most applications ( but not from facebook, instagram and tiktok).

Does this have to do with my Android version, I have android 5.1.1. Does anyone have an idea what is the causing this, and if there's a way to enable certificate pinning ?

TIA


问:
Alphanumeric symbols in the data/app directory?
Why are the names of the applications replaced with alphanumeric characters in the data/app directory? I am seeing this when accessing the directory through an adb shell.</p>


问:
My samsung a20 was dropped and the screen is black, can't get the alarm to shut off
My samsung a20 was dropped and screen cracked,it worked for a hour or so then screen went completely black...hey google works but can't get the alarm to shut off now...i need all my important information off that device..how do I get the alarm to shut off and if I replaced the screen will everything be the same as before</p>


问:
Lg G5 sa recovery
Love my phone but old, have had it 'die' on me twice now in last 6 weeks. Just got it working after screen showed Fileware upload do not unplug for an hour. I disconnected battery whilst it was plugged in. bingo....working again but what if it dies and I cant get it working. How and where do I back everything up?</p>

Title: Lg G5 sa recovery


问:
How to open big EPUB files?
Just found out that Play Books has a limit of 100MB for each .EPUB file one wants to upload.

Are there alternative eReaders for Android that would allow to upload/read bigger .EPUB files?

This one has around 400MB.

I am wondering how should one open these files?

Title: How to open big EPUB files?


问:
Android 7.1 certificates are going to expire, anyway to renew them?
starting from September android 7.1 and below users are going to have issues with the internet
so is there anyway to renew those certificates so i can use my phone properly?</p>


问:
How does Android interpret physical keyboard inputs?
I thought I had a grasp of how they work in a general sense, but I've been trying out several keyboards lately and have run into some inexplicable behavior.  For example, pressing the ESC key on one keyboard will functionally trigger the back function in Android, but on another keyboard it does not.  Same with mouse inputs' right clicks, seeing incongruemt behavior.  I know some keyboards have proprietary technologies that render special keys non-interoperable, but I thought the basic standard keys all trigger the same scan codes?  Why is this not the case?


问:
Turn off "Unfortunately [app] has stopped" popup
I'm wondering if it's possible to disable this popup. I've an old phone that I use rarely where I uninstalled some critical apps, that I don't use. Phone works flawlessly apart from constant popups. Maybe there is a Magisk module or something. Thanks</p>


问:
block particular apps from accessing vibration
I'm using Samsung S9 ( OneUI version 2.5, Android version 10 ).
Is there any way to stop a particular app from accessing the vibration feature of the phone?
Even if I turn on the silent mode and turn off the vibration for all notifications, certain apps keep on vibrating the phone even for minor actions. I find this really annoying and I want to block these apps from having access to the vibration feature. How to do this?

In detail :
I'm the kind of person who doesn't like the concept of vibration haptic feedback. I'm okay with my phone vibrating for essential notifications such as calls and texts when I'm in a meeting and my phone is in silent mode. However, I don't like the phone vibrating for silly things such as a key-press, or forwarding a video etc. It gives me a weird feeling and also vibration consumes the battery.

Recently this problem became really annoying, as Youtube introduced segments in videos. Now, when I try to forward the video using the progress bar, the phone gives a really strong vibration, Which is annoying and consumes a lot of power.

I looked in the settings of the Youtube app and there is no way to stop it from vibrating. Is there any way to block the youtube app from having access to the vibration motor?


问:
Android ePos caller ID app help!
Hi basically I have a new ePos system at my shop, they have a feature where it automatically inputs the callers number into the system to bring up their ‘profile’ from previous orders they’ve made.

However their caller ID app runs from Android phones and obviously we use landline phones.

I just wondered if anyone knows a way to have the android app triggered by a landline phone without having to do call forwarding? The invoxia VoiceBridge would have been perfect but of course they have discontinued it.

I just want a cell phone to receive a call alongside the landline phone.

Thanks!

Title: Android ePos caller ID app help!


问:
Getting devices with custom system app
So, I am looking into getting devices with a custom app pre-installed from factory on the system image in a "device as a service" scenario. I am specifically interested in the app having system privileges without rooting the device. From some initial research, I believe solutions like Knox (MDMs) would not be able to cover this. What kind of solution would this be? What is the correct industry terminology here?</p>

Title: Getting devices with custom system app


问:
Detect which type of SSL Pinning is being used on Android Applications
Is there a way to detect what the Android Application is using as SSL Pinning. Whether it is certificate Pinning , Public Key Pinning or Hash Pinning ?

I am doing a study on local Android Applications and would like to collect data on what type of Pinning these applications are using.

TIA


问:
How do I edit/view android system.img files located SDK emulator images
I want to edit a few files inside android-30\google_apis_playstore system.img which resides in sdk/system-images. I'm using WSL ubuntu 18.04, I do fdisk -lL system.img to mount with the right offset
which returns

```<code>Disk system.img: 2.7 GiB, 2832203776 bytes, 5531648 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 419B5BC3-59EE-4BEA-AA53-FF67E1D7406E

Device      Start     End Sectors  Size Type
system.img1  2048    4095    2048    1M Linux filesystem
system.img2  4096 5529599 5525504  2.7G Linux filesystem
</code>```

and by doing sudo mount -t auto -o ro,loop,offset=2097152 ./system.img /mnt/loop
it fails like this

```<code>mount: /mnt/loop: wrong fs type, bad option, bad superblock on /dev/loop1, missing codepage or helper program, or other error.
</code>```

I have also tried to use simg2img which is said that it will convert the image to a raw image in which I can mount it which yields invalid sparse file
simg2img system.img raw.img

```<code>Invalid sparse file format at header magic
Failed to read sparse file
</code>```

Do you have any idea of how to open or mount the system.img file and edit a few files?


问:
Help with ultra power saving mode bug
I have a Samsung Galaxy S5 with a major problem. One night while turning the phone to Ultra Power Saving Mode the phone immediately shut down. I left the phone o charge and the next morning I woke up the whole entire phone system was gray, it had no color, I thought this was just a glitch so I left the phone to at least make it settle but afterward that it was still gray and had no color, I had access to all my apps but it was just that everything was gray. I have restarted the phone and removed the SD card multiple times but nothing seems to work. I have even gone into settings and tried turning on Emergency mode but nothing happens. Kindly please help me with my problem and sorry about my grammar as English isn't my first language. Have a nice day</p>

Title: Help with ultra power saving mode bug


问:
How to reenable the old android google translate feature to translate everything on screen?
Few years ago on my android was possible keeping pressed the home button, to activate a feature that would allow to translate everything on screen. Unfortunately in a subsequent update google decided to replace that awesome functionality with the useless google assistant. Do you know how I can do to get that back? I know it is possible to update screenshots but that it is a way more cumbersome process.</p>


问:
Remove or hide a ui element from android rendered xml layout
Context

I have automated a production app (dont have control over it's source code) using appium but in an attempt to speed up this automation I would like to remove a dynamic animated element (with class android.view.Viewgroup) from UI which is slowing down the UI query response time. Preferably, a shell command using adb by specifying a UISelector query would be amazing!

Full disclosure: I dont fully understand the android UI model as well as I do say browser's DOM. And the ability to hide/remove an element on DOM in browsers is easy. However, android doesnt seem to support any straight forward API to remove a rendered UI element. I suspect this is because UI model is more closely linked to OS internals in android and any attempt to alter expected rendering behavior would trigger fatal errors.

In simple terms, I would like to replicate the browser's document.getElementById("ded").remove() behaviour for android's native view model.

Potential Solution

While not officially supported, I'm confident this can be achieved with View#setVisibility api using a rooted device and some form of code injection during runtime using frameworks like Xposed. I'm happy to check in at xda forum if discussing about it is not supported here.

I would greatly appreciate any insight into libraries/modules/apps that may already provide this functionality.
Thank you in advance!


问:
Restore android google drive backup after factory reset
I have google drive backup. I am using android 10 on nokia mobile. I did factory reset / erase all data. during set up I skip restore backup.

I check on google drive. I have backup on 23 February. But How do I restore that backup.
I do not find restore backup option on device. I check in setting.


问:
TWRP Backup of encrypted files or decrypted ones?
I'm using File Based Encryption on data partition and I want to backup it with TWRP. In this kind of encryption, there are two possibilities to backup files. First, one does not decrypt files in TWRP and take backup files as they are, backup of encrypted files. The second solution is to backup decrypted files, so I need to decrypt files with PIN code in TWRP and then take backup.

Which solution is better and has fewer cons while restoring a backup?


问:
Disable "Call via hangouts" in Contacts.google.com in browser - use tel: instead
I use "click to call" from my phone often on phone numbers in my laptop browser (Chrome) and recently tried it from Gmail and Contacts tabs of Google apps. I even created a page to paste numbers in to use this function: https://craiglambie.com/ClickToCallForm.html

However this sends a link to call using Hangouts - when I want to use the mobile/cell phone to call usually.

Is there a way to disable the hangouts link, and make it a "normal" tel: link that the phone accepts?


问:
Phone app keeps crashing
Launch the Phone app, then 3 dots > Settings and every time the app crashes with the message "Phone has stopped". I was trying to block a number. How do I go about diagnosing why this is happening?

If relevant, running Android 7.1.1 on a Motorola G4 Play.

Title: Phone app keeps crashing


问:
dumptrace file - /data/anr/
On Android Pie, everytime we take a bugreport, it generates a temporary file in data/anr. This temporary file is not cleared and stays on the device. Its size is around 2MB. This means everytime I take a bugreport on my device, the data/anr folder will have dumpstate_XXXX file that is taking up some space. How does Android clean this file and how often does it clean this file if at all? Else won't it cause my device to run out of memory eventually?</p>

Title: dumptrace file - /data/anr/


问:
Non-root user in rooted Android phone?
In my Arch Linux setup(and most others), the default user is non-root. Any admin work needs access to root account which is given temporarily with a password(generally using programs like sudo and doas).

I have recently rooted an Android phone(Redmi 4X "santoni") and installed LineageOS (android 9 version). I have TWRP, Magisk installed.

I want to setup an account which is non-admin, ie: no app can ever request superuser access and the Magisk Manager App,TWRP app will not even be visible to the user. How do I go about it?

In LineageOS' system settings there is an option called multiple users. However when I have used the "guest account" there, it still seems to have root access, ie:apps can request superuser access and Magisk is accessible too.

I looked around online but didn't find anything substantial which catered to my specific question.

Title: Non-root user in rooted Android phone?


问:
How can i get past the samsung account "abnormal reset" on a samsung galaxy s6?
I done a factory reset on my samsung galaxy s6...well now I'm stuck on a page that wants the samsung account the phone was set up in due to an "abnormal reset" but I dont know that information...is there another way to get by it?</p>


问:
Have volume buttons wake phone
I'd like my volume buttons to wake my phone when asleep AND change volume when awake. (LOS style)

Want to do that manually (ideally by editing keylayout files/build.prop/settings put...), don't want to install any button remapper app.

I took inspiration by Cr0wTom 'Xiaomi Mi AI button remapper' and edited my keylayout at /system/usr/keylayout/gpio-keys.kl (you can find what's in use with cat /proc/bus/input/devices)

```<code>key 115   VOLUME_UP
key 114   VOLUME_DOWN
key 102   HOME
key 528   FOCUS
key 766   CAMERA
key 689   POWER
</code>```

last line is AI button that I successfully remapped to POWER.

If I change first line with key 115   VOLUME_UP WAKE AI button stops working, volume up keeps working as before and doesn't wake the phone.
If I change to key 115   WAKEUP AI button works as remapped POWER, volume up button wakes the phone but does not turn volume up anymore.

running root Xiaomi.eu rom A10 on a Mi9

Title: Have volume buttons wake phone


问:
Booting TWRP custom recovery from SD card
I have a bootloader locked nokia 6.1 PL2 2018 and I want to temporarily boot TWRP for backup using an SD card. is it possible???</p>


问:
Why is web page opened
I restored os on my android phone, and when I go to google browser(first time on fresh os), it opened some website that I haven't visited in years. I check all settings and can't find why I got that page... Why is this, and how can I fix it?</p>

Title: Why is web page opened


问:
How to improve bluetooth audio quality

OS: Android 10

Device: Samsung Galaxy 10e

Speakers: Marley Get Togeather

I bought some new bluetooth speakers that were rated highly for audio quality, but when I connect my phone, it sounds really poor.  If I use a cable, it's fine, but bluetooth is really bad.  How can I improve audio quality?  I read somewhere that all speakers for this brand support AAC, but I can't seem to get that working.

If I long-hold the bluetooth button in the drop-down, and select the gear beside the device, I don't see any options.

If I enable developer options and look at the bluetooth settings I see:

codec: SBC

sample rate: 44.1 kHz

bits/sample: 16

If I try to change the code, sample-rate, or bits/sample in the developer options, it instantly reverts to the original settings.  By that I mean if I select AAC, I hear no difference, but the menu shows AAC until I switch windows and then switch back.  At that point it will show SBC again so I suspect it never actually change and that was a GUI bug.

I haven't used bluetooth much, so I don't know if I have a problem with my configuration, a problem with what I'm doing, or if the device itself is limited.

Title: How to improve bluetooth audio quality


问:
No add work profile on Samsung Galaxy S21+
I just bought Samsung Galaxy S21+ and I went to the manage accounts to add a work profile, but there is not an option to do so. I am wondering if I can download a newer version of Android to get this or if my phone needs updates.

What can I do to get the work profile option on my phone?


问:
Get homescreen icons back to normal size
My dad's phone (google pixel 4a, latest android version) seems to have changed the size of the icons on the home screen while in his pocket. Is it somehow possible to get this back to normal?

We have so far tried the following things:

check display & font size in the accessibility menu is set to default

there is no option to customize the icon size by holding an empty spot in the screen (only the ability to switch the launcher)

we weren't able to find an option to change the grid layout on the home screen

There is no custom theme/home screen/launcher installed


问:
What Is "Font Server"? And is it a virus?
I've been doing malware scans for my phone pretty often recently, along with browsing and searching up apps/ files on my internal storage. I found one called "Font Server" which has a blue guy with a smile face as the image. I searched it up and found people saying it was a virus, it says it was installed in 2008 even though I got my phone in 2018 so 10 years later. I'm timid to imediently try anything so I want to make sure if anyone know what the app is/ if it is harmful/ if I should remove it or not before I do anything. Thank you!</p>


问:
Recovering a deleted text message on Android
I accidentally deleted a very important text message that I received that included a link. I need to locate this text message. Is this possible on my Android Alcatel chatr wireless (cell provider) phone?</p>

OwnerDisplayName: MelajuanaPropps