问:
How to always boot in recovery mode?
I'm using Magisk and, because my device (lavender with Android 11) does not have ramdisk in the boot images, I have to boot in recovery mode (not to recovery, only in recovery mode) every time I want to have root enabled.

So my question is, is there a tweak to automatically boot in recovery mode every time ? Maybe a script or something (I am not very familiar with these) ?

Thank you for your help !

Title: How to always boot in recovery mode?


问:
Problem in installation of PrimeOS
When I want to install PrimeOS, I see a black page with a bash like command line instead of choices for choosing. Is it normal? If it is normal, what should I do and type in the page? In all PrimeOS install guides, there is choice for choosing not a place for typing.

I make USB bootable with ventoy. My OS is LinuxMint.

Excuse me for my poor english

ContentLicense: CC BY-SA 4.0

Title: Problem in installation of PrimeOS


问:
Home wifi connection is very inconsistent and also my 5G as well. What is going on?
My phone tends to lose connection to the internet when I'm connected to my home wifi. Throughout the day, I will be watching youtube videos only to run into buffering as I lose connection. Then maybe a couple minutes later, it returns, or sometimes I manually disconnect my connection to my wifi and reconnect to fix the issue immediately.

I don't understand why it is doing this. I know the wifi itself isn't losing connection to the internet because my Xbox and PC are both connected to the same wifi and I haven't experienced lost of connection at all when I'm browsing the internet on my PC or playing online games on my Xbox.

Another thing is, my 5g connection isn't working as I would like it either at my home. At work, I don't even connect to the company wifi at all. I use my 5G mobile data to all day as I have unlimited data and it works perfectly at work as well as whenever I'm out and about. I'll watch Netflix, Youtube, etc and won't experience any lost of connection.

But when I'm home, I wouldn't be as mad about experiencing these wifi issues if my 5G unlimited mobile data also worked but it doesn't work as well neither. Usually I'll be using wifi, lose connection when my youtube video stops, turn off the wifi to switch over to 5G, still don't get connection to internet so I manually reconnect to my wifi and I get internet again, or I do get internet with my 5G only to lose connection maybe a couple minutes later.

Is there some signal interfering with my phone to both the wifi and the 5G network? I have two Xboxes both connected wirelessly to the wifi and they both work flawlessly. The smart TV as well.

I have the Galaxy S21 Ultra by the way but the previous phone I had, my Galaxy S9+ also experienced these same spotty internet connections as well at home.

UPDATE

Some Info on my WIFI

SpeedTest

Provider = ATT U-verse

5GHz Wifi Signal Strength = -50dBm

Router Model = BGW210

Ping = 57ms

Download = 30.27 Mbps

Upload = 12.08 Mbps

Wifi-Client Connection Statistics of Some Devices

MAC Address: (Galaxy S21 Ultra) |  Authentication State: Connected | IP Address: xx | Access Point: 5GHzxx | Transmit Packets: 100203 | Receive Packets: 41983 | Transmit Bytes: 106343914 | Receive Bytes: 7400949 | Trans Errors: 0 | Signal Strength: -69dBm | Disassoc Count: 1197 | Death Count: 2

MAC Address: (Galaxy S9+) |  Authentication State: Connected | IP Address: xx | Access Point: 5GHzxx | Transmit Packets: 282677 | Receive Packets: 93193 | Transmit Bytes: 386678945 | Receive Bytes: 14062960 | Trans Errors: 0 | Signal Strength: -61dBm | Disassoc Count: 1 | Death Count: 0

MAC Address: (Xbox1X) |  Authentication State: Connected | IP Address: xx | Access Point: 5GHzxx | Transmit Packets: 149483 | Receive Packets: 70467 | Transmit Bytes: 203467990 | Receive Bytes: 10668784 | Trans Errors: 0 | Signal Strength: -62dBm | Disassoc Count: 10 | Death Count: 4


问:
Nothing happen when 'Tap yes' in Google 2-step Verification
Phone is Sugar C13. The phone is running Android 8.1.0.

When I sign in Chrome on PC, I get the "notification" of "Is it you trying to sign in?", and the two step verification pops up.
I tap "Yes", and nothing happens.

What could cause this and how could I fix this?


问:
Unable to mount storage on twrp-3.5.2_9-0
My device is gt5note10lte (SM-P555) and running on Samsung stock 7.1.1.

I have compiled the twrp in 7.1 version but unable to get the storage mounted.

Device tree : https://github.com/psuryatej4android/twrp_device_samsung_gt5note10lte

TWRP Sources : https://github.com/EngMoPro/platform_manifest_twrp_omni

I think it is to do with some permissions. Please refer to the following video to see the issue https://www.youtube.com/watch?v=QxJ6ry5iHDQ

I have tried changing twrp.fstab, init*.rc,. Also, tried the suggestions from youtube videos.but no luck

XDA request link : https://forum.xda-developers.com/t/unable-to-mount-storage-on-twrp-3-5-2_9-0.4300059/

Any help would be greatly appreciated.


问:
Rooted android device but getting "Security exception: Permission Denial: not allowed to send broadcast android"
I've got a nexus 6P running stock Android 8.1 which is rooted using Magisk (verified by runnign adb shell su).

When turning airplane mode on/off using adb (as per these instructions: https://stackoverflow.com/a/40271379) the following exception is returned:

```<code>$ adb shell settings put global airplane_mode_on 1
$ adb shell am broadcast -a android.intent.action.AIRPLANE_MODE
Broadcasting: Intent { act=android.intent.action.AIRPLANE_MODE flg=0x400000 }
Security exception: Permission Denial: not allowed to send broadcast android.intent.action.AIRPLANE_MODE from pid=6484, uid=2000

java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.intent.action.AIRPLANE_MODE from pid=6484, uid=2000
    at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:19204)
    at com.android.server.am.ActivityManagerService.broadcastIntent(ActivityManagerService.java:19842)
    at com.android.server.am.ActivityManagerShellCommand.runSendBroadcast(ActivityManagerShellCommand.java:621)
    at com.android.server.am.ActivityManagerShellCommand.onCommand(ActivityManagerShellCommand.java:154)
    at android.os.ShellCommand.exec(ShellCommand.java:96)
    at com.android.server.am.ActivityManagerService.onShellCommand(ActivityManagerService.java:15021)
    at android.os.Binder.shellCommand(Binder.java:594)
    at android.os.Binder.onTransact(Binder.java:492)
    at android.app.IActivityManager$Stub.onTransact(IActivityManager.java:4243)
    at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2919)
    at android.os.Binder.execTransact(Binder.java:697)
</code>```

What needs to happen for adb to be able to turn airplane mode on and off?


问:
How to Embed audio files to cells in Excel? (in Android)
I have a table of alphabets, phonetics, and word examples.

I want to embed the pronunciation of each cell,

so I can press it and it plays the audio file in-app.

Is this possible?

If not, is there any other way I can do it (a table with embedded audio)?

OwnerDisplayName: Roo Tenshi


问:
Is there any way to change screenshot buttons in phones which don't have it in the settings?
I have a Samsung Galaxy Core GT-I8262.

Its power button has some issues and I can't take screenshots using the combination of power and home buttons (I can't take screenshots using the combination of other keys).

It doesn't have the screenshot feature in the notification bar. Also, there isn't anything regarding screenshots in settings.

So is there a way to change the buttons to, for example, home and volume-down keys?


问:
Audio over USB Android
Hi i have a android phone and want to use the Audio over USB feature  on the phone to connect the audio output to a windows computer
i dont have a usb driver and the windows errors about the driver does anybody know what driver where to get it?</p>

Title: Audio over USB Android


问:
Logcat: Different logs when the same app has been run multiple times
This question is w.r.t getting the logs from the logcat (using command-line tool).

I want to fetch the logs of a particular app after the app has been run for a specific amount of time (say 15 seconds) without any user involvement. So, I used the logcat using the command adb shell logcat --pid ProcessIdOfApp and when I tried to run the same app two times (after the fresh installation and cleaned all the earlier logs) using adb shell logcat -c, then also for many apps, I am getting different logs. When I am saying different logs what I mean here is we are getting different tags.

I also tried rebooting the smartphone and then installed the apk on the device, but still I am getting different logs.

My curiousity is when the same code is being executed, the corresponding logs generation should also be same. Why it is coming different when the same app has been launched multiple times?

Is it like I am not filtering the logs properly for a given app? If
yes, then what command I should use to filter the logs for a given
app?

Since I am getting different tags when the same app has been launch
multiple times, how to  know which tags should be ignored?


问:
Does GrapheneOS's Android 10-based releases use FDE (Full Disk Encryption)?
According to the ASOP documentation, it is no longer possible to use FDE and the user is forced to use File-Based Encryption

Note: Devices running Android 7.0–9 support full-disk encryption. New devices running Android 10 and higher must use file-based encryption.

Though I understand the argument for convenience (morning alarms, updates, etc), there are several strong use-cases where it's better to have a FDE with a very long passphrase -- consider journalists, activists, political prisoners, etc crossing borders with oppressive governments. It's better to just turn the device off and rely on FDE to protect absolutely everything in these situations.

I see that GraphoneOS's FAQ page talks about FDE and also Android 10, but doesn't directly answer this question.

Do the GraphoneOS releases that are based on Android 10 still use FDE? If so, how?


问:
Samsung's stock camera app, where are Virtual Shot 3D photos stored?
I've got a Samsung S7 and the default camera has a Virtual Shot mode where you walk around an object to take an array of photos as one photo. You can then view it in the default gallery app and turn the device or swipe left/right to see the 3D effect.

My question is, where are these Virtual Shot 3D photo files stored?

When I take such a photo it stores a single .jpg, when I connect a USB to my laptop I can see it in this folder (btw the phone is not jailbroken or anything)

```<code>\Samsung\Card\DCIM\Camera\20210703_124317.jpg
</code>```

But that is just the first of the array of photos which acts like a thumbnail sort of. The reason that I want to get all the photos is to edit them as a 3D photo or print them side-by-side for a stereo photo 3D viewer. I've looked in the folders listed below, but I can't find where they are stored.

```<code>\Samsung\Phone\DCIM\Camera\
\Samsung\Phone\Android\data\com.samsung.android.coreapps\
\Samsung\Card\DCIM\Camera\
\Samsung\Card\Android\data\com.samsung.android.coreapps\
</code>```

EDIT: the single JPG that I found is actually just one photo, the file size is too small for multiple photos but I've also opened it in a binary editor to verify it isn't some container file or concatenated files.

OwnerDisplayName: BdR


问:
change file system F2FS back to EXT4
Xiaomi Poco M3 (citrus) A-only (SAR) system-as-root device shipped with MIUI 12 Android 10 and F2FS (FBE encryption). I don't trust F2FS and want to run it plain EXT4 unencrypted. I formatted EXT4 and changed /vendor/etc/fstab.qcom inside super.img but that doesn't seem to work.

After I change back fstab.qcom to F2FS it works again (unencrypted) so this should not an issue with encryption or AVB/dm-verity.

```<code>$ adb disable-verity
verity is already disabled
$ adb shell avbctl disable-verification
verification is already disabled
$
</code>```

There is no fstab in dtbo magiskboot print nothing.

```<code>$ adb pull /dev/block/platform/soc/4804000.ufshc/by-name/dtbo dtbo.img
$ 7z x Magisk-v21.4.zip
$ x86/magiskboot dtb dtbo.img print -f
Loading dtbs from [dtbo.img]

$
</code>```

How and where can I change the default file system type for userdata?

Title: change file system F2FS back to EXT4


问:
Ethernet on Android x86
I have recently installed Android x86 on my computer and I am not able to access my internet via Ethernet, I only have Ethernet I don't have any Wi-Fi
Please help me</p>

Title: Ethernet on Android x86


问:
How to decrypt android adopted storage without the key?
I would like to know if there is any possible workaround for decrypting the adapted storage. I don't care about recovering my data because I've got the backup already. I tried formatting the sd card several times from the custom recovery as well as from the pc with no luck. Since I've already formatted /data partiton of my phone, I got no way to recover my lost key. So is there any way to make the sd card usable?</p>


问:
Recovering data from Android 10 (forgotten PIN)
Long story short: I have forgotten the PIN to my Android device, as it wasn't being used for a while.

Steps that I have tried/am trying/planning to try:

Brute forcing - I have been trying to brute force using another Android as a rubber ducky (via Nethunter). But for some reason, despite using the right kernel and everything, I couldn't enable HID support, so it's still under trial.

I tried force-enabling "Use fingerprint to unlock at first boot", and could unlock the screen, but of course, the data was still encrypted. But this did help me tweak helpful settings like: "Automatically unlock when correct PIN is entered". A question in mind here is: Would enabling this feature, indirectly mean, bypassing the time limitations on the entry of wrong PINs?

TWRP brute forcing - I have tried the tool by timvisee: apbf. But it has its limitations and also, again, (maybe I'm not doing it right) TWRP starts entering PINs via terminal, but it does so even if the code is not running on PC. Refer: https://github.com/timvisee/apbf

Most complicated way - I have not tried this in the right way, but I believe, by extracting the hash and salt (somehow), I could recover the PIN. In short, there is a loophole in the FBE (File-Based Encryption) implementation, but again, I don't know the how-to's. Refer: https://bits-please.blogspot.com/2016/06/extracting-qualcomms-keymaster-keys.html (Obsolete for Android 10)!

Edit: Since I now know about CVE-2016-2431, I guess the required info can't be extracted by the old process. But again, I would like to know if there is a way to do it in Android 10

Making an image file - I have also thought of creating a raw image file of the /data partition in order to, either:

Decrypt the partition later by using tools like hashcat (don't
know exactly how) or

Downgrade the Android to a lower version in order to decrypt it (again, don't know if it would work). (This won't work)

Information about Android:

Device: RMX1921

ROM: CUSTOM - ResurrectionRemix

Android Version: Q/10

Root status: Rooted (USB Debugging enabled)

That's all the information I can give right now, and if you could throw any light, I would be very grateful.

Lastly, we have working methods for lower Android versions, so I believe there is a working way for higher Android versions

P.S. - I am willing to try all the possible ways, in order to save my data


问:
How do I change temperature units in "Discovery"?
I'm using a Pixel 3a, with Android 11. I have Google Assistant disabled in general, but occassionally go through the articles section that's still available and sometimes stumble upon the "Discovery" tab in other ways.

Recently, a weather/temperature bubble showed up in the corner of the assistant's "Discovery" tab:

Now I don't understand °F and would like to switch the bubble over to °C units. I can't figure out how to do that.

The weather widget on my home screen already shows temperature in °C.

The notifications for "Current weather conditions" are in °C as well.

If I click on this bubble to open full weather information, that also uses °C.

I even have location enabled, letting the weather page guess my current location.

(Although the current-weather notifications do insist that I live in another town a few kilometers away from where I live, with "AGPS reset" only helping for a few minutes, but at least it still gets the city right, so surely that shouldn't be the problem.)

My Play Store country is still set correctly.

Geolocation websites recognize my IP address correctly.

Is there any setting that I'm missing? Do I need to re-enable the full Google Assistant to find it? I don't really care about this weather bubble in itself (it just shows the same thing I already see otherwise), but the inability to change it annoys me every time.


问:
Chrome using a lot of battery without being open
I got a new phone (pixel 4a) and chrome is using a lot of battery without being open. If I pause the app I get much longer battery life. When checking my battery usage by app chrome is always the number one.

For example, over about 8 hours it used 25% of my battery but was only open for 7 minutes.

Is there anything I can do besides pausing the app constantly to fix the battery usage? Should I just suck it up and hope an update fixes this?


问:
Stop outgoing SMS in Android without using operator barring or blocking
I want to block any outgoing SMS from my phone so that I cannot send SMS to anyone without using operator barring or blocking. I also want incoming messages to still work, but not outgoing.

Is there any way I can do that by an app, or hard coding, or ADB commands, or anything of sorts?


问:
How do I get "My APK" app to find my APKS file
I have installed My APK app on BlueStacks. It is very small but just barely readable.

I enabled its access to the local computer. The app is supposed to handle APKS, but in the APKS tab, it says no APK file found. I tried looking in the scan folder but it is unclear where it is actually searching in regard to Download.

How do I get "My APK" app to find my APKS file?


问:
Talkback speed is very fast, how can I reduce it in Samsung S21
I have Samsung S21 5G Android 11 mobile. This device Talkback talking speed is very fast that I am not able to catch it.

How can I reduce speed ?


问:
Rebinding installed apps with Google Play
In order to carry out a country change, Google support told me to uninstall the updates of Google Play (which I see as a downgrade, to version 17), to change the country, and let Google Play update itself (back to version 22.4). It worked for the country change, but now Google Play will not propose any update for my apps. It seems that since the downgrade of Google Play, all my apps have been seen as third-party apps, although most of them were installed by Google Play. (I do not think the country change is responsible.)

Now I have all my apps without a link to Google Play. When I open the description of an app in Google Play, Google Play sees it is installed and shows the buttons "uninstall" and "open". But it is not in its list of installed apps, hence it will not carry out updates on these apps.

How can I have Google Play track my apps again?

With one app, I tried to uninstall and reinstall it (both inside Google Play), but it erased its settings and data... Do I have another options than lose my apps data (imagine with Signal...) or keep them without updates?!


问:
Fastboot gets stuck on waiting for device trying to access Fairphone device on Arch linux
Basically through the fastboot "API"  i cannot access/see the Fairphone 3+, while theandroid debug bridge is working.
Using adb devices lets me see the device and adb reboot bootloader reboots the phone.

My steps so far are:

On Arch linux:

installed:  android-tools; android-udev and android-file-transfer

setup new udev rules for the device following this article.

SUBSYSTEM=="usb",ATTR{idVendor}=="...", MODE="0660", GROUP="adbusers", OWNER="..."

SUBSYSTEM=="usb",ATTR{idVendor}=="...",ATTR{idProduct}=="...",SYMLINK+="android_adb", OWNER="..."

SUBSYSTEM=="usb",ATTR{idVendor}=="...",ATTR{idProduct}=="...",SYMLINK+="android_fastboot", OWNER="..."

tried running fastboot as root

On Fairphone:

enabled Developer mode

Get the IMEI and SerialNumber to unlock the bootloader code

Enable OEM unlocking

when fastbooting (through adb)

i select START and continue with the boot process

** Connection attempts**

Trying both USB 2.0 and USB 3.0 ports on my laptop

(The USB-C cable i am using is an official fp cable)

When now using fastboot oem unlock or any fastboot command i get stuck with <waiting for device>

Maybe fastboot cannot access the USb devices?
What do i have to do to actually be able to use fastboot?


问:
Did Samsung disable the option to keep apps in memory?
In the last few days, I have noticed that the option to lock apps and keep them in memory seems to have been grayed out. This occurred after downloading an OTA update. I am using the SM-9981, with One UI 3.1 and Android 11.

Has Samsung eliminated this option in a recent update? Can it be re-enabled?


问:
Chrome removed from launcher after update
I run EMUI 9.1, which completely supports Google Play Services (bought it before the ban). However, I used to update Chrome normally, but starting with version 91.xxx, it just updates fine, but the app icon is removed from the launcher, and can't start it.

Any solution? or I have to quit Chrome?


问:
Updating rooted android through OxygenOS Updater
Forum,

I am trying to update my rooted OnePlus6 from Oxygen 10.3.9 to 10.3.11. For this I am trying to use the OxygenOS updater app, which is a handy software updating utility tool. When doing this, I can select an option "Keep my device rooted". Under this option the following description is provided: "When you select this option, you may specify a root package which will be installed after the update is installed. This ensures that your device stays rooted. Please note that this root package must be compatible with the NEW OxygenOS version you are going to install!

I have always used magisk to root my phone. I would like to keep it rooted, so therefore I was thinking to provide Magisk-23.0.zip as a root package.

My question is: How do I know whether magisk 23.0 is compatible with OxygenOS 10.3.11?


问:
2nd Gmail account syncing only once per day
I am using the Gmail app on a Samsung Galaxy S8+ on Android 9 with 2 Gmail accounts and a Yahoo account. My primary Gmail account and my Yahoo account sync very frequently and I get notifications about new emails within 5 minutes.

However my secondary Gmail account gets far fewer emails and it only syncs once per day, in the middle of the night.  I've seen a lot of questions about this happening to POP accounts, and potential solutions to increase frequency by increasing the number of emails received. But this is a Gmail account and I should be getting push notifications with instant syncing, right?

Is there a setting to check? Or even though it's a Gmail account, do I need to write a script to send myself messages every 5 minutes?


问:
How do i move a folder to the root of my Android Device?
I'm trying to install a GPS apk (igo primo), I have the apk and all the files i need but i cant access the root folder the instructions specify.
The instructions say this :
"Move this folder to the root of your Android Device and install the iGO app inside."

Do i need to install the apk and then move the files, or the other way around?
Can anyone give me a hand, I'm not very good with this.
I apologize for my English

Thanks!!


问:
Android with USB C Hub and charging not working
I would like to have my Android device (Alldocube iPlay 7T) to be charged and simultaneously have a few USB devices connected.
Note - I'm new to Android - but needed this setup for a specific purpose.

I purchased a USB C hub with power through, it charges the device but the hub doesn't work. It's verified to work on PC/Mac.
Then i read that an OTG adapter is required for USB Hubs, so got one (USB C to USB 3) and I can connect an FTDI based serial port to the OTG adapter and a flash drive - but this doesn't work through a USB hub, powered or not (belkin) - these are also verified to work on PC/Mac.
I read about a guy in this forum that seems to have it working but he needed to update the OS, but he's hardware setup wasn't described.

Can anyone share what hardware setup and software setup is required? Is it required to brick the device and update the android version? (currently installed 9, kernel version  4.4.147)


问:
Not able to access /dev/block/sdbx in system app?
is it possible to copy /dev/block/sdax to /dev/block/sday in c++ with using system call,
example this should happen

```<code>dd if=/dev/block/sdb20 of=/dev/block/sdb43 bs=4096
</code>```

without using system()?

I am not able to access /dev/block even though handled avc denials in repective .te file and running in permissive ?

```<code>01-01 00:00:04.259  4173  4173 I update_engine: type=1400 audit(0.0:319): avc: denied { read } for name="sdb43" dev="tmpfs" ino=13472 scontext=u:r:update_engine:s0 tcontext=u:object_r:block_device:s0 tclass=blk_file permissive=1
01-01 00:00:04.259  4173  4173 I update_engine: type=1400 audit(0.0:320): avc: denied { open } for path="/dev/block/sdb43" dev="tmpfs" ino=13472 scontext=u:r:update_engine:s0 tcontext=u:object_r:block_device:s0 tclass=blk_file permissive=1
01-01 00:00:04.259  4173  4173 I update_engine: type=1400 audit(0.0:321): avc: denied { write } for name="sdb46" dev="tmpfs" ino=1142 scontext=u:r:update_engine:s0 tcontext=u:object_r:block_device:s0 tclass=blk_file permissive=1
01-01 00:00:04.259  4173  4173 I update_engine: type=1400 audit(0.0:322): avc: denied { getattr } for path="/dev/block/sdb43" dev="tmpfs" ino=13472 scontext=u:r:update_engine:s0 tcontext=u:object_r:block_device:s0 tclass=blk_file permissive=1
01-01 00:00:04.146
</code>```


问:
Can't install an APK from OneDrive on Android
Installing an APK from the Google Drive app on Android works fine for me after setting Google Drive on the "Install from external sources" list under Security settings to 'yes'. But the Microsoft OneDrive app does not appear on the list (even though it is installed), so I can't set it to yes. When I tap on an APK in OneDrive it just downloads it, it does not install it. There is also no permission for the app to "Install unknown apps" under app settings.

From the search references, I found OneDrive is included as a source from where an APK can be installed (sideloaded) and have not found any search reference indicating it is not, but I cannot get it to install from there. Have tried on three different Android devices.

What am I missing? Can anyone here install an APK from OneDrive on Android?


问:
Messenger(FB) app that does not run in background
On Windows Phone and iOS messaging apps(like Facebook Messenger) simply use push notifications.

Is there an option only to only enable push notifications for FB messenger on Android?

Right now it continues to run in the background draining the battery.

So investigating some more, Lineage OS displays that background battery usage vs foreground implying it is running in the background for notifications.  "Force Stopping" the Android app and notifications stop coming through.  So the answer appears to be no.


问:
Will the fastboot boot ramdisk command boot a coreboot ramdisk to boot from usb/ sd card without mods?
Of course it has to be signed and not exceed a size-limit, but I think that custom roms or os's should come to a bigger audience without the limiting security and guarantee risks, disabling the ability to update for example.

I like coreboot because it can boot anything.

I hope one day a coreboot ramdisk would available for various snapdragon devices.

Then the playload can detect the usb/ sd card and fire the os.

Would this be possible?

Edit: Ofc not on Samsung, not even utilizing the fastboot mode.


问:
Android SM-A01F5 Stuck on boot loader
after attempting to flash the device using Odin3 I've got an issue.

got a Samsung SM-A01F5 Device which has the following issues:

Can't enter Download Mode

Can't use FastBoot to flash the device

Factory Reset (with wipe) doesn't change anything

Can't open SD Card directory

What it can do:

boot into the bootloader menu (the only options are)

start, restart, recovery mode, power off

boot into the  "Android Recovery" menu, with the following options (in brackets are my thoughts)

Reboot system now

Reboot to bootloader

Apply update from ADB (works but it limited)

Apply update from SD card (doesn't work)

Wipe data/factory reset

Wipe cache partition

Mount /system (doesn't work)

when doing this i get an error of ""Fail to find block device for partition)

view recovery logs

run graphics test

run locale test

power off

I've tried flashing these ROMs with Odin3

A015FXXU4AUB2_A015FOJM4AUB2_XSG

SM-A015F_1_20200302114054_jsgb2nfkoc_fac

SM-A015F_A015FXXU4BUD8_A015FOLM4BUD8_HiepGia_SSV

all 3 of these roms would get stuck on prisim.img

TIA.

Edit 1:

I have gotten the download mode on now, thanks.

Title: Android SM-A01F5 Stuck on boot loader


问:
How can I disable subtitles by default on VLC for android?
I went to options > subtitles > and unchecked "auto load subtitles". Still every time I load a video it auto loads the subtitles?</p>


问:
Are my personal files safe after factory reset?
I am planning to sell my phone Redmi Note 7 running Android 9 which is already unlocked bootloader but no root access, is my data can still be recovered through Android software recovery? I don't want the new owner to recovered my personal data. and I read somewhere that Android factory reset does not actually delete your file and still can be recovered. Is this safe to just only factory reset?</p>

OwnerDisplayName: Roxas


问:
Confusion regarding Factory Reset via TWRP
Background The OS is Android 10 that uses FBE as encryption type.

Problem I do not remember my PIN, that would decrypt the files in /data partition, so I cannot unlock my screen.

Question I can boot into recovery (TWRP). And, naturally, TWRP asks for PIN to decrypt the files.

But if I choose not to enter the PIN, and decrypt the files, and go straight to do a Factory Reset via TWRP, will I be able to access my files (images, media) in internal storage? (/data/media/0/)


问:
Can a WiFi modem be directly connected to an android and use the android phone's usb tethering (via an adapter)?
I have an old wifi modem which lacks usb port. I was wondering if we could an rj45 to usb adaptor to use the internet connection from the android device via usb tethering?
Or if there is any other way to achieve the said task, I'd be more than happy to know that.


问:
Can I use Odin 3.12.7 T Flash option to install u-boot onto my SD card without tripping knox?
I'm curious, if I can eventually dual boot on my Galaxy Tab Active 3, because some games are broken on the newest One UI and I want to take control over my OS without the limiting security and guarantee risks, disabling the ability to update for example.

However this question only focusses on the custom bootloader U-boot for the SD card.

Has anyone an idea if this will work, because it would be a huge step forward for the Samsung Android community?

Any answer is appreciated!


问:
How to press power button using fastboot command?
I want to unlock my Oneplus 6 bootloader. But my power button is not working, so at the screen where I have to select, 'unlock the bootloader' I don't know how to do it without Power button??

Hope u could help me..


问:
Samsung phone has a broken power button, no physical home button and no bixby button. How can I power it up?
I have a Samsung A20 (A205W) with a broken power button (probably water damage), the only other physical buttons are the volume buttons. How can I power it up?

Thanks


问:
Can I flash a custom fastboot mode image on a Samsung device to boot custom devices without tripping Knox
I'm a noob and don't even know if these are seperate images, but I do know that Samsung has no fastboot mode as it is stuck entering it and instead has a download mode.

The question is, can I still put something there to boot, like coreboot, will it trip knox and will it be able to boot from sd card or an usb stick.


问:
Having a phone with no call log
There are a lot of questions asking about unlimited call log. I have the exact opposite problem: I want no call log at all in the software.

Even with a phone with "pocket detection" and a complicated swipe pattern, I still happen to randomly call a number who called me previously and that I do not want to call (clients who do not see my number when they call me : I do not want them to have my number). For instance because of inadvertent manipulation, drop of water on the screen making the touch detection put my finger where it isn't, etc...

I do not care about privacy issues, I just do not want to have any way to reach a call log with phone numbers from the UI.

Is there any way to achieve that with android ? Maybe with a third-party phone app ?

Title: Having a phone with no call log


问:
Voice Changer in Realtime GSM Phone Call
hello I was wondering whether it would be possible to apply voice changer on GSM Phone call in realtime?

If possible, then I'm thinking of using a voice changer mechanism to secure the voice data before being transmitted to the receiver.


问:
Maps automatically searches for last phone number
I have a Pixel 4a, using Fi for service.
Build RQ3A.210605.005 (up to date, as far as I know)

Since the last update or two, I find Maps open for no reason. It's searched for a phone number, which I've never done myself. Over time I realized that the phone number is always the most recent in my call list... incoming or outgoing.

I don't use sketchy apps, so I doubt it's malware. Any thoughts on a cause, or a fix?
Thanks!


问:
Bluetooth Headset does not work with VoLTE
I have a strange situation where my Bluetooth headset does not work for (most) VoLTE calls. More specifically, I can perfectly hear the other end, while they are unable to hear me.

Is there a way to find out why? And how can I mitigate it?

Details

Xiaomi Redmi Note 8T with LineageOS 17.1 (build from 12. July 2021)

AfterShokz Trekz Titanium Bluetooth headset

Using the German carrier O2.

What I know so far

Headset works perfectly fine for music, non-VoLTE calls, audio recording apps, WhatsApp voice messages, etc.

If I switch the audio to phone or speaker during the call, everything works as expected. If I change it back to the headset the other party no longer hears me. I can switch back and forth multiple times with the same results.

If I disable VoLTE calls the headset works fine.

The problem does not occur on all VoLTE calls, but on most. It seems to be consistent with the opposing party, i.e., happens all the time with caller A, happens never with caller B.

Most tests done in a zone with excellent LTE+ coverage (full bars and I can even see the antenna tower). The problem seems to be independent of the LTE tower or city I am in.

When on VoLTE calls, the audio quality is definetley better.

Ideas I had

My prime suspect is "audio codecs".

When I connect this headset to Windows, it appears as two devices: "hands free audio" and "stereo headset". And only the "hands free audio" one is able to also record sound. When I switch the output to "headset" the audio quality is worse. Also, when I am using the headset's microphone it can not playback music over the "stereo headset" device.

My guess is, that there is some kind of "high quality" audio mode and when on VoLTE calls, a better audio codec is used and the phone wants to also use this for the headset. The headset accepts, but is unable to do both (high quality audio and microphone usage) at the same time.

Is there a way to check which audio codecs are used? Maybe via adb?
I could change the bluetooth codec in the developer settings, but the list is huge.
Can I somehow determine which codecs are supported by the headset?


问:
Contacts on Google Duo but not in contacts app
Many contacts there in Google Duo, but I can't find them in the contact app.

I've tried sync, but nothing appears, still on Duo only.
I've checked Google Contacts on the web, but with the same result, many contacts are not there.

Is there any way to move them from duo to my contacts?


问:
Is there a way to play a series of mp4 files without downloading an app?
If I download several .mp4 files and put them all into a folder, is there a way to play them all, either shuffled or in order?

I just want to avoid having to navigate to the next song every 2-3 minutes.

The device I want to do this with is an HTC OPM9200.


问:
What is this circular notification icon?

I have a Samsung J7 device and a notification logo showed up in my status bar as shown in the image. What kind of app is this? Thank you.


问:
How is Google Play services still running after disabling?
A while ago I disabled Google Play services, Google Play Store and lots of other Google apps in my phone.
Below is a screenshot.

One can see that Google Play services is still having cached background processes.
How can a disabled app have cached background processes?
I tried stopping the process, but keeps reincarnating.
Rebooted the device, no luck.
I was also not signed into the device with any Google account.

It's a Nokia 2.2 (Android 10). Nokia won't provide any information about rooting or modifying this device. This device is really shady.

What can I do to get rid of this?


问:
If I have two phones, and I use the same email address for google play store, will it back them up individually?
If I have two phones, and I use the same email address for google play store, will it back them up individually?

For example, would each phone have its own apps that are backed up?

Or would they end up with the same apps installed?


问:
I have two phones same model, Google account sees older one but not newer one
I have two phones same model, Google account sees older one but not newer one

If I go to http://myaccount.google.com  then security then look under "your devices" so https://myaccount.google.com/device-activity    Then I see devices listed.

It lists my Moto G7 Power phone, the older one,  but doesn't list the other one  - the newer one.

And it lists, the older Moto G7 power, it just lists as Moto G7 Power. So if it did find the other one I don't know what it'd call it.

My older one(the one that is listed), runs Android 10.

My newer one(the one that isn't listed), runs Android 9.

(so yeah my older one has a later android than my newer one, and my older one is listed, while my newer one isn't.. so I don't think Android version is the issue).

I would like Google to see both devices!

Update

Now I see I was logged into a different account than the one I needed to be, on my laptop.. Google just sticks the letter "V" for my two google accounts.   Now the issue is slightly different and I have to dig more to figure out what that issue is.

Note- at a commenter's suggestion, I have included this comment in my question "I want it recognised partly for backup, partly for the 'find my device' option, and generally because I think google account should be linked to all my devices."


问:
Is it possible to connect an external mic to my phone and use it for calls?
I have a high end microphone (Neumann) and was wondering if I could somehow connect it to my phone and use it as an alternative to the built-in microphone.</p>


问:
Android tethering without using sim card?
My Android phone has internet access through WiFi hotspot and it has no sim card inserted. I want to connect this phone to a router via usb or usb-to-rj45-wan-port whatever doable (there is some reason behind that to make the story short).

I can easily accomplish this configuration using PC (i.e., WiFi <--> PC network sharing <--> router), but when I try usb tethering on android it insists to have sim card although it can just use the WiFi connection to provide tethering service. Is there a way to achieve it?


问:
❓APK components - services, activities, broadcast & content receivers where's their data Stored?
As I understand
Every APK install is associated with these components. Trying to figure out precisely where they are stored.

```<code>Services
Activities
Broadcast receivers
Content receivers
</code>```

For most apps through third party I am able to enable and disable these

But for certain APK which are /system APK's I am unable to save my settings .

They flip back to their default settings where all the undesirable components which are actually spyware are selected

So here are my questions

-- for a specific APK install , how do I enlist the names of APK components - services activities ,  content and broadcast receivers using ADB shell commands

---what would be a switch to disable them using ADB shell commands & ensure my settings are saved

---lastly  for certain APK's that is /system/priv-apps I am unable to to save my settings. What would be the reason. Do I need to chmodthe octals or remount rw

---where are these components stored APK folders .....

/system/app ,  /system/priv-apps , /data/app OR data folders  - /data/app

I am attaching the screenshot of  certain components whose settings I can't save

Appcomponent screenshot


问:
How to fix duplicated/echoed missed-call notifications?
TL/DR: How can I prevent missed call notifications from being duplicated when I dismiss them?

Background:

I get several phone calls per day from numbers I don't recognize.  My phone (Google Pixel XL) usually labels them as suspected spam and I press the volume button to stop the ring tone but I don't reject or answer the calls.

Shortly after the incoming call ends, I get a notification of a missed call.  When I swipe the notification to the right to dismiss it, the notification pops back up as if it was a new notification, complete with the notification sound.  As far as I can tell, this duplicate or echo of the notification is identical to the original with one exception: when I dismiss it, it does not echo or duplicate again.

Almost all missed call notifications echo like this but I have been unable to figure out why nor have I noticed any clear difference between the majority of notifications that get duplicated and the few that do not.

Question:

How can I prevent these missed call notifications from being duplicated?

Details:

Phone is the original Google Pixel XL running Android version 10 (Kernel version 3.18.137, Build number QP1A.191005.007.A3) on the Google Fi service.


问:
Is it possible to put pictures into an album as they're being taken?
My wife uses her S10+ (probably upgriading to an S20 or S21 soon) to take document properties for our work. When it comes time to do the quote, she has to scroll through a billion photos to get to the one she's after. She's really busy during the day and it's annoying to put them into albums after the fact. Is there a way she can make a new album and as pictures are being taken to automatically deposit them into the "current" album?</p>


问:
Best way to stop WhatsApp recipient from seeing conversation?
What is the best possible way to stop or limit a contact’s ability to view our conversation history? I understanding blocking the contact does nothing to stop them from viewing the conversation. Neither does clearing/deleting the conversation. I think deleting your WhatsApp account is the best way because it will render your profile blank? I want all messages from me to the person to be as disconnected from me as possible.</p>


问:
Can we and How to create Live USB for Virtual Android OS with standalone apps from USB?
Can we run Virtual Android OS with standalone apps from USB dribe from Android mobiles if yes share like how can we don it?

Is it possible in Android to install or create program or run standalone apps (as in Windows apps software's runs without installing) on USB stick or create a live android USB OS with 500-1000 apps if yes how share links.

As Ubuntu Linux notable live USB be created but it will not run Android apps is it possible to run android apps on Ubuntu..Or run  create a. Android virtual os from Android itself


问:
is it possible to connect another android device for "media audio" thru bluetooth?
I can connect to a notebook, and on android it says "connected for media audio", perfect! But i cant walk for hours with a notebook...

I got another android on a smartphone (B) that cant run games and have a small screen to watch movies properly. But the bluetooth connection is only for internet sharing. Why there is that restriction? It would be so much easier if they just let it work... even if just as a developer option.

So, if there was some way to tell my good smartphone that my bad (B) one is a desktop, (B) could be used as "media audio".

I need to send all audio, from any app playing audio. For ex, some times i play a game with its music off and use mxplayer playing musics that i like at the same time, and also need any system sound to go thru.

I guess i will need to root the (B) phone to let it pretend to be a desktop? Most probably it is just a simple thing like "user agent" on browsers right?

Related:
How can I stream audio from another device via Bluetooth? (the answer has a broken link. Why was it upvoted if it isnt useful?)

I think thru wifi would be more complicated? But if you have a how to link i may try it too. The problem is that i need the wifi for internet and i may not be at home. But i think this should be another question if thru bluetooth is no go.


问:
How can I set up DNS OVER HTTPS in Android 8?
I am using android hotspot as wifi for my devices, and I want to set up DOH on my android, how can I do it?

PS: I have tried to install Intra or other APPs that can only change dns for internet access directly from Android, not from other devices that using the Android hotspot.


问:
Librem 5 Purism hardware buttons, software equivalent on GrapheneOS?
One of the best features of the Librem 5 Purism is it's hardware switches. Any possibility that a means exists that will allow me to do this on GrapheneOS? Software, rather than hardware, of course.

--Update--

Obviously not the same hardware also. It just seems to me that if it's a good idea to have these readily accessible in the first case then why not also the second? Is there an app or plugin something? What about shortcuts to settings items? Wouldn't something like this make a good intelligent default?

-- Update 2 --

I'm new around these parts so I can't respond to comments. The hardware switches on the Librem 5 turn off everything that you might consider a security risk. They are not programmable. The idea is that you can literally turn off your camera, cellular, etc. Know how having your camera turn on spontaneously creeps people out? Well you can just turn it off. Totally disabled because of a hardware switch such that software cannot turn it on. So if you are at a protest and you think "The Man" is tracking your cell, just flip a switch and turn it off. It's not the same if it's software, of course, but then again, GrapheneOS is pretty trustworthy as software goes. It's having those buttons readily available that I'm after. On a phone that is touted for security, I shouldn't have to dig for them, should I?


问:
Is it possible to enable the tab key as an indentation instead of "cycle" on android?
I planned to use my phone+external keyboard combo as my primary means of taking notes (replacing my laptop since it is more portable).

Everything works great except for tab key for indentation. Android input it as cycling through options, similar to alt key on desktop.

I heavily use tab indentation in my note-taking since the note-taking-style is a heavily nested markdown file, so the tab key is a very important and frequently used key. For example:

```<code># title
- subtitle 1
  - point 1
    - subpoint 1
    - subpoint 2
  - point 2
    - subpoint 1
      - subsubpoint 1
  - ...
- metadata:
 - date: 2021-3-3, tuesday
 - location: Kyoto, uni cafe
- ... etc. (you got the idea)
</code>```

Is it possible to make tab key to insert indent / disable shortcut?

Thank you in advance for your kind help!

Edit per Morrison Chang suggestion:

The apps I used were Samsung Notes and Markor. I will try with different apps to see if these are isolated behaviors within these apps.


问:
Data Recovery on Android 11 with broken screen
I have a pixel 4a running android 11 with a broken screen.  The full screen is black; the lower part of the touch screen seems to be responsive but I can't really tell what's going on so I don't know if that is actually doing anything.  The networking seems to be broken in some way, I can't locate my phone with 'find my phone' and the nightly backup hasn't run.  (mMst stuff is backed up through the various cloud services, but I have a few things that I collect, encrypt and upload to a personal server once a day.)  In this case, I was collecting GPS data while planting on my farm and I'd very much like to get that data back.

Things I can do:

I still have the password for the encrypted data partition

USB seems to work, as I can get the device on fastboot

Bootloader is unlocked.

I installed the lineage recovery and can start the ADB shell from fastboot using a physical keyboard.

I can navigate the early file system but can't see how to decrypt/mount the data partition.

I can boot all the way to the lock screen, and I can feel the touch sensor engage when it gets there.

I can hear the notification when I plug in the keyboard after boot

I can type my password, but I don't know if it is successful

Things I cannot do:

I attempted to enable the screen reader by holding both vol buttons; I don't believe I was able to trigger the 'OK' button in the confirmation

I attempted to type my password with a keyboard, then connect to a computer, but best case I need a dual port usb dock so I can plug in the computer and keyboard to trigger the accept dialog.  I am waiting to go home in a couple days so I can grab a usbc dock

TWRP usually has some recovery features but is not available for Pixel 4a/Android 11

I doubt I can install a new screen as the frame is quite bent, I might be able to run it without putting it back together but I worry about keeping the rest of the green board intact as there are already some functions (like networking) that have broken.  I think pulling out the old screen is likely to be a task that leaves the phone in a worse state.

Things I have not tried:

HDMI out to a monitor.  From what I've read, it could be possible with a display link style adapter, which I have, but not with me today.

Flashing or adding root to my base image. (usually that requires a data wipe.)

It seems the easiest thing to me would be decrypt and mount the data partition and then do a couple adb pulls from the recovery.  I'm not quite sure how android 11 does the encryption but I have the password (though the key is probably in the TPM)  Is that something that is doable?  I didn't see any of the usual suspects when I was looking through the tools in the bin so I'm not quite sure how they are mounting their encrypted partitions.


问:
on Android 9 How do I get an audit going back some 10 days about a process that deleted some internal data
I am magiskally rooted on my Android phone running version 9 MIUI 11. In fact I moved toMIUIJust a week ago. Had This phone has a replacement of my lost AT&t phone since couple of months and initially installed custom GSI ROM which did not support many frequencies here so moved to stock.

Problem

About 5 days ago my entire WhatsApp internal data the most important of which is the  msgstore.db file was cleaned out.

 was extremely sceptical of MIUI vis-a-vis cleanliness & privacy is concerned and was trying to figure out how to to disable certain MIUI components which I could confirm were spyware.
And then this tragedy happened.
I would like to know which process has done this. I did not disable at that time the cleaner app - now it's disabled.

QUESTION

Is there any way to dig out which process cleaned out my phone I am about just a week away from when this incident happened

What I did

Looked up the logcat but I can't beyond a few days.

 what else will tell me the story ? I have USB debugging enabled


问:
How to mount image file without root?
In rooted android phone, ext4 image file is mounted using these commands in android terminal :

```<code>  #  mknod    /dev/block/loop52  b 7 0
  #  losetup  /dev/block/loop52  /sdcard/ext1.img
  #  mkdir /mnt/ext
  #  mount -t ext4 -o rw,noatime  /dev/block/loop52  /mnt/ext
</code>```

I have an ext4 image file stored in sdcard.
How can I mount the ext4 image file in my non rooted android phone or Is there any other way to access it ?

Title: How to mount image file without root?


问:
How can I check if my Android device is infected with Pegasus Spyware?
I am referring to this Spyware which as been on the news lately:
https://en.wikipedia.org/wiki/Pegasus_(spyware)

How can I check an Android device for it? I would prefer step-by-step instructions, even if they are very technical, to other answers like "install an anti-virus" program, if possible.

I deliberately leave out details about my OS and phone model because I have several I need to check, and because I believe this question can and should be made at a more generic level.


问:
Could an emulation of Bluetooth Keyboard on a smartphone be made to access the Microsoft Bluetooth Keyboard driver of Windows 10?
As I was searching for means to connect a Bluetooth Keyboard to windows 10 It seemed that I just need to pair the keyboard to the notebook by selecting the Microsoft proper Bluetooth driver.
When I searched the emulation of a Bluetooth Keyboard on an Android device I found that to interface it to Windows 10 there is a need for a piece of SW they call "server".
I wonder if there is a real need for it and if there is a way to use the Microsoft driver to work with the emulation of the Bluetooth Keyboard.</p>


问:
Export Google chrome's tabs *by groups*
I have been following How can I export the list of open Chrome tabs? and was able to use Chrome's native method, to generate the tabs list. Not having tried the scripting tips yet, I saved it manually.

But the list is disordered, and not broken by tab groups (of which I have a lot...). The native sync feature discards the groups too. Is there a method to get a list of tabs from android chrome by group?

As a less ideal alternative, is there a way to sync/send an entire,  single group from android Chrome to the PC client?

Title: Export Google chrome's tabs *by groups*


问:
How folders DCIM Download WhatsApp media redirect link binded location changed to SD card?
As in  PC windows we can change default location of my documents by roaming profile or registry settings  is it possible to

Change default storage location   (link bind redirect automove) of DCIM Download WhatsApp media Facebook or any folders to externL memory card so thT whatever saved is automatically moved or downloaded or saved in external  card Automatically through and shell commands without or on  rooted mobile kindly share link or step by step commands ways to do the same with any folders in android

Is there any app which automove or is there any script which automoves without rooting. Eg:foldermount app (but works in rooted mobile)


问:
Reset failed decrypts counter Android 10
I have a locked phone (forgotten PIN). And due to many incorrect attempts, the gatekeeper timeout or cooldown period is stuck at 480s.

Is there any way to reset this failed decrypts counter, so that brute-forcing could be done feasibly?


问:
What happens to a Li-Pol battery L13D1P31 if it is left on a permanent charge?
I have an old tablet (Lenovo Tab 2 A7-30 and a L13D1P31 battery) that I want to use as a permanent display of some data like a weather forecast.

I would like to leave this tablet plugged in permanently. However, it will not turn on when the battery is removed.

I found many articles on tablet operation without a battery, however, there were simple ones considered, and my battery is able to somehow communicate with the tablet.

Can I not suffer and leave the battery in the tablet (or it just needs to be withdrawn)?

Will there be overheating and fires?

Will a battery operating in this mode be able to prevent an emergency shutdown of the tablet when the charger is powered off (so as not to damage the data in the flash memory)?

Does the battery degrade so much that the tablet stops seeing it and won't turn on even when charging (even with the charger connected and the battery inserted, the tablet will not turn on)?

UPD: Tablet have a OEM battery. But for its intended purpose, this tablet is no longer needed, since there is a newer one. However, the old tablet keeps charging up to 4 days in passive mode (works as an alarm). It was bought 5 years ago.


问:
Recover data from a bricked phone (not yet reset)
I get this screen from an old android device:

It has not yet went through a full factory reset so the data is still there. The data (photos) is in internal storage (no sdcard).

Any ideas how to recover data from this?


问:
Unable to mount fastboot boot twrp.img backup unable to mount storage?
I was trying to load  fastboot boot twrp.img and  take backup of stock rom system.img userdata.img through twrp recovery...

it loaded successfully but  while taking backup its  not able to take backup its  giving error that it "cant mount storage" its  not  able to select  sdcard microsdcard  and internal memory to showing 0 free space

is there any  way to  mount  and show  the internal memory or external sd card in twrp recovery image  any suggestions

My mobile device have

OS Android 6.0.1 Marshellow Processor Qualcomm Family cortex a53
Machine arrch 64 Architecture arm cortex a53 External memory card 64GB
ROM 16 GB MOBILE NOT ROOTED

thank for your suggestion time and advice


问:
How factory reset process looks in details?
So I tried to find answer for this question, but it is very hard to find something other than simple instruction of doing factory reset and backuping data.

I'm interested of detailed process of the factory reset.
When I force system to do this, what is going under the shell.
It is some image on hidden partition from bootloader boots "clear" system? Or maybe it's just deleting user configuration files, and every corrupted system file states same as before reset. Or maybe there is the way of checking hash of critical files and repair them from some kind of recovery image?


问:
PIN locked Pixel with broken screen and USB debugging OFF, OTG keyboard doesn't unlock it
I got a Google Pixel 1 with a smashed dead black screen locked by a known PIN that I would like to recover some photos from. Nothing vital but now it has become a personal crusade to do it!

The good news are:

it shows as MTP device on win/linux

vibrates if I try to unlock it via fingerprint (as it requires PIN, so no can do)

if I connect a keyboard/mouse via OTG they do light up

in recovery mode it shows in ADB and I'm even able to put it into sideload mode

The bad news:

can't see sh1t (BTW Pixel 1 doesn't support USB-C -> HDMI)

USB debugging is OFF

if I enter my PIN via OTG+keyboard then plug it back to the PC, it stills shows as MTP and no files can be browsed (I would assumes it remains locked)

I'm pretty close to burn another 20 bucks and get a second spare screen but before I do that, any ideas?
From what I read, my greatest achievement so far which was to get it in sideload blindly is useless and every 3rd party tool seems to require USB debugging ON.

Thanks!


问:
manipulating character strings communicated over Bluetooth
I successfully installed a Bluetooth Keyboard Emulator for an Android device – it has keyboard and mouse control that works nicely.
I wonder if there is a way to “break” the app to get access to the character strings that are communicated from the Android device to the notebook, via the Bluetooth link, to support manipulation or feeding “synthetic” character strings to the notebook.</p>


问:
Automated reboot without root
I'm responsible for an automation lab with many Android phones connected to Linux servers via adb for testing. We have an issue where devices will sometimes disappear from adb which means that someone has to manually find the phone and reboot it before it will come back. I'm interested in finding solutions to reduce this need for manual intervention.

One idea I had was that we could periodically send a ping to the device from the host and if the device did not receive a ping in a specific period it would assume it was disconnected and reboot itself. The issue is that we cannot root these phones so I'm not sure if that is possible.

I do however, have the ability to write and install my own apps on the devices and I don't need to worry about any playstore rules.  Is there anyway I can achieve this without rooting the device?

Title: Automated reboot without root


问:
Looking for a tool that can execute Dynamic Partitions operations
For managing dynamic partitions, there are a number of operations such as resize, remove, add_group ...

When flashing a Rom, these commands are listed in dynamic_partitions_op_list file (with Rom file) and are being executed with updater-script file of Rom;

An example of content of dynamic_partitions_op_list file:

```<code># Add group qti_dynamic_partitions with maximum size 7588834592
add_group qti_dynamic_partitions 7588834592
# Add partition system to group qti_dynamic_partitions
add system qti_dynamic_partitions
# Grow partition system from 0 to 2344250624
resize system 2344250624
</code>```

The execution of dynamic_partitions_op_list operations in updater-script file:

```<code>assert(update_dynamic_partitions(package_extract_file("dynamic_partitions_op_list")));
</code>```

Right now for managing dynamic partitions (for example resizing one), I put my custom dynamic_partitions_op_list file into a flashable zip (with updater-script file);

Is there any way/tool that can execute those operations without the need for creation of a custom dynamic_partitions_op_list file and flashable updater-script file? (I mean something that could be executed via adb or fastboot)


问:
Executing Edify script via adb shell
Edify script is a very limited language that is being used in flashable zips (mostly updater-script files);

Within Edify script we can execute shell commands (run_program()) but what about the vice versa? Is there anyway/tool to execute Edify script via adb shell?

Title: Executing Edify script via adb shell


问:
Can the Phone Repair Service access my 2FA, Google Account passwords, SMS, Photos, etc
I recently took my phone to a mobile repair service (unofficial, 3rd party). The phone had fallen into water and had severe water damage - it was non-functional, I was not able to turn it back on and so far the service has not been able to get it to turn on.

I have a mild suspicion they might be doing something shady. So I started thinking - what sensitive data could they possibly be able to access?

The phone model is OnePlus. It's locked with fingerprint, and pattern, which I did NOT give to them. Also, the phone did NOT have full disk encryption, unless there's some kind of default one.

Edit: Phone model comes with Android 6 out of the box, but 90% sure it was upgraded to Android 9.
Also, SIM card was removed, I did NOT give it to them.

I'm mostly concerned about:

2FA - AFAIK these are encrypted and impossible to access without unlocking the phone.

Google Account passwords (the ones that are auto-saved by Chrome) - I'd assume these are also encrypted, hopefully, someone can confirm that.

Photos - since disk encryption was NOT enabled, I'd assume these are freely accessible if you take out the data drive and put it into some special device that's able to read the data?

SMS ???

app data - notes (Evernote), FB messenger, WhatsApp, Telegram ???

cache/temp data ???

anything else ???

Any info/input would be greatly appreciated!


问:
Inexplicable possible automated event
I'd like to understand the cause of this:

I put the smartphone on airplane mode

After some hours I turn off the airplane mode, and activate internet connection

Suddenly, after having lowered the notification panel, automatically it opens the PlayStore with a string in the search field, something like toroepan°tyf (I don't remember it exactly), and the advice that any matching item hasn't been found

After this I notice that in recent apps there's Yahoo mail (I didn't opened it before)

I touch Yahoo from recent apos, and inexplicably it appears that I have choiced to open an attachment (it seems as a gif), so I go back with the upper arrow, and

It is showed a mix of a chat conversation and of a forum message I wrote about one month ago on Chrome

Moreover these pieces of written things alternate with gifs (please look at the second screenshot below representing the internal content), other images, and even a private video of the Android gallery

And it is a mail I would be ready to send to chrome-distiller://(many alphanumeric characters) (please see the 1st screenshot below)

I googled and summarily I've understood what distiller refers to and means.

The question is how it has been possible the existence of that mixture of pieces of web pages (chat, message on Chrome), even gifs and images I've never used and a shred of chat I wrote on Lichess app (which, I suppose, uses Chrome for the chat feature) in the form of a Yahoo draft.

Is it known a similar effect? Has someone else experienced something analogue? Maybe is it an Android or Chrome bug? Perhaps something malicious acting in the background?

I really can't figure out the cause of it.

Title: Inexplicable possible automated event


问:
Android x86 change Keyboard layout
How can I change the keyboard layout used by Android from the command line?

I installed the Android-x86 release from https://www.android-x86.org/ in a VirtualBox VM. Unfortunately, the VM only boots to command line and I cannot access the GUI. I want to follow the following solution to directly boot into the GUI: https://stackoverflow.com/a/61247128/12336925

I cannot type the commands as I want and I cannot use vi appropriately because I have a German keyboard.

Title: Android x86 change Keyboard layout


问:
How do I make "Groups" the default view for my contacts?
I am using the default contacts app that came with my Android 4.04 device.  When I open the Contact app, there are 4 tabs. Phone, Groups, Contacts, and Favorites and by default it opens the Contacts.  Is there a way (a setting) to opening the  "Groups" view as default instead?

If not is there a another compatible Contact management application that can be recommended to give me more control over groups etc.  The primary purpose of this question is to answer about the settings, not to provide me with a long list iof Apps.

Thanks in advance

ContentLicense: CC BY-SA 3.0


问:
Recover deleted (by Windows) Android photos
I've accidentally deleted an Android folder containing some photos using my Windows laptop. I've already tried a bunch of recovery apps but none of them show the deleted photos (they do show photos deleted using the phone).

Is there any way to recover those photos?

My phone has Android 11 (Oneplus 7t), it's not rooted (bootloader is) and I was using MTP.


问:
Hotspot limit for number of connections?
I play Pokemon Go and have some phones that need to connect to a phone for its Hotspot for Internet.

I found that iPhone / iOS can serve as a hotspot, but has a limit of up to 5 connections for Hotspot.  Is there a limit for Android phones acting as a hotspot?  I have a Samsung A32, OnePlus Nord, and some Xiaomi phones such as 11i and 11 Lite 5G.


问:
twrp recovery installed but it boots to android instead
i wanted to add custom rom to my galaxy j7 max and hence tried installing twrp(3.1.1& 3.2 or what ever) in Odin the task passed but then when i try to boot to it by pressing vol up+ power + home , instead of opening twrp it boot normally to the android and cannot get twrp .. so plz help</p>


问:
Is there a way to transfer SMS mesages from a Samsung Galaxy S5) to an Ubuntu PC, in a form in which I can view the SMS messages on my PC?
I want to transfer the SMS messages on my Samsung Galaxy S5 smartphone to my PC (with Linux Ubuntu 20.04.2 LTS), in a form in which I can open and view the messages on my PC as I do on my smartphone.

I know about the apps which can back up smartphone data, such as Kies and Smart Switch for Samsung phones and ADB and Android File Transfer for Android devices. But as far as I can tell, these only back the SMS data up rather than save them as files which can be opened on PC desktop.


问:
Any apps or ways to categories group apps folders in menu view
Question :- Any apps or ways to categories group apps folders in menu view

Is there any apps or  setting to categories group move apps installed icons in folders inside menu view.  as there is jumble of apps to search in alphabetical order which cant be moved or.clubed inside menu view of. Android 6.0 unrooted mobile phone.

I had searched Google and.finded smart launcher go launcher x or drawer to. Circle launchers but all just change wallpapers or screens or  create widgets folder organizer manager but no one manages the menu view

Yes I know we can create folder in home (mobile desktop views) but rereating folders shortcut making home screens desktop jumbled will slow down booting of  Android starting and many time it don't display icon image on reboot of mobiles.

Can we create self menu (as start menu in Windows properly organised) through app and hide the original menu and replace our own menu. I have seen a circle.menu recreated by some apps.

Any stable good idea or  app to create organize categorise apps icons shortcuts in a menu view as it's not customisable in Android 6.


问:
Creating a virtual camera that shows an app (override web whatsapp QR code)
I'm trying to override the problem of connecting to web whatsapp on a phone without a camera in order to scan the QR code.
It's probably not important but the computer runs linux.

My idea: creating a virtual device that the phone (samsung galaxy s21) will see as a camera, and in this camera there will be:

Option 1: the remote controlled desktop of the linux computer (by vnc or similar).

Option 2: the android phone will be connected by USB to the computer and it will see the desktop as a "camera".

Any other idea can be good, but it must be a synchronized whatsapp and not on an android emulator.

Thanks!


问:
How to monitor log app wise usage report RAM CPU Battery and stop RAM resident apps from starting at boot
How to monitor log app wise usage report RAM CPU Battery and stop RAM resident apps from starting at boot

Many time my Android 5.0 & 6.0 mobile become slow while working i checked it In process stat in developer mode that there are many of apps running and using RAM even after closing the app it means they are memory resident may be for notification and running in background.

We can force stop from app or kill process but it's for time being now my queries

Any App to.Record whole day log report for all apps how much total RAM CPU battery it's using while working on app and after closing the app means RAM using statistics app wise for whole day weak or.month

How to kill running apps proccess forcefully stop for temp running and freeing the ram urgently.

How to permanently stop (not uninstalling app) the apps or background services from.startup or disable from memory resident as and whenever we boot or start those apps run in background. Is there any way in Android to stop from.running in startup or resident memory RAM after closing app.


问:
How to stop the screen from dimming when on call using speaker?
When I'm on call hold I usually turn the speaker on while they play their plinky plunky music.

The screen dims after 10 seconds. I have to tap to wake up the screen. Which is annoying.

How do I stop this annoying feature?


问:
Someone factory reset my android phone. How do I know more?
I am looking for my smartphone. I found it on my pants. It is factory resetted. Last time I check I was doing fine using the phone to call gojek (like uber in Indonesia)

And then I got message after I restart the computer that my phone is factory resetted without authorization.

I have no idea. How can my phone got factory resetted without authorization? Is this because while the phone is in the pocket somehow it register 15+ false finger prints or what? I did set things up that way.

In any case, I wanted to know more. Is there a log or something that I can check to see what's happening.

I lost quite a lot of data, but most I can recover.


问:
Android wifi tethering (hotspot) DNS server (dnsmasq) returns 127.0.0.1 for some domains
My laptop connects to the internet through Android wifi tethering (hotspot).

Some websites cannot be connected because my Android DNS server returns 127.0.0.1.

I can browse the sites on my Android phone, but not through the hotspot due to this strange DNS behavior.

For example, I can't connect to tools.ietf.org to read RFC documentations. The DNS server just returns 127.0.0.1.

Info about my Android device:

Redmi note 5 global/pro (whyred), running MIUI 11, Android 9.

The DNS server is dnsmasq, according to this question, and I've checked it by netstat.

It is listening on 127.0.0.1:53 & 192.168.43.1:53.

sudo getprop | grep dns:

```<code>[init.svc.mdnsd]: [running]
[net.dns1]: [172.24.x.x]  # this DNS server returns correct IP
[net.dns2]: [10.x.x.x]    # this returns 127.0.0.1 for some sites
[net.dns3]: [xxxx:xxxx:xxxx::xxxx]
[net.dns4]: [8.8.8.8]     # the always working 8.8.8.8
[ro.boottime.mdnsd]: [147300891920]
</code>```

dnsmasq command found by ps auxf:

```<code>/system/bin/dnsmasq
  --keep-in-foreground     # Do NOT fork into the background, do NOT run in debug mode.
  --no-resolv              # Do NOT read resolv.conf.
  --dhcp-ignore-names      # Ignore hostnames provided by DHCP clients.
  --no-poll                # Do NOT poll /etc/resolv.conf file, reload only on SIGHUP.
  --dhcp-authoritative     # Assume we are the only DHCP server on the local network.
  --dhcp-option-force=43,ANDROID_METERED  # DHCP option sent even if the client does not request it.
  --pid-file               # Specify path of PID file (defaults to /var/run/dnsmasq.pid). Empty here.
  --listen-mark 0xf0063    # Socket mark to use for listen sockets.
  --user dns_tether        # Change to this user after startup. (defaults to nobody).
  --dhcp-range=192.168.42.2,192.168.42.254,1h
  --dhcp-range=192.168.43.2,192.168.43.254,1h
  ...
  --dhcp-range=192.168.51.2,192.168.51.254,1h
</code>```

I killed the server launched by my system, and did some experiments.

If I add --all-servers (Always perform DNS queries to all servers.), dig's response would be ANSWER: 0.

Because there's no server set. (Default conf file /etc/dnsmasq.conf not exists)

If I also add --conf-file=/sdcard/dnsmasq.conf, with file content server=8.8.8.8, I'm able to connect to tools.ietf.org.

Question is, what would dnsmasq do, when there's no config file (dnsmasq.conf)?

If there's no dns server specified, how does it query upstream DNS?

And why it works for most domains, but not all?

Guess there's something to do with [net.dns2]: [10.x.x.x]    # this returns 127.0.0.1 for some sites?

Update 1 (more info)

After I reboot my phone, the [10.x.x.x] DNS server returns ANSWER: 0.

My dnsmasq returns correct answer. I don't know why.

I read & searched more to understand Android DNS more.

Here's more info:

sudo /system/bin/dumpsys netd:

```<code>  NetworkController
    Default network: 100

    Networks:
      1 PHYSICAL rmnet_data0
        Required permission: SYSTEM
        No DNS servers defined
        No search domains defined
        Private DNS mode: OFF
        No Private DNS servers configured

      2 PHYSICAL
        ...

      51 DUMMY dummy0
        ...

      99 LOCAL wlan0
        ...

      100 PHYSICAL rmnet_data1
        Required permission: NONE
        DNS servers: # IP (total, successes, errors, timeouts, internal errors, RTT avg, last sample)
          172.24.x.x (64, 64, 0, 0, 0, 61ms, 54s)
          10.x.x.x <no data>
        No search domains defined
        DNS parameters: sample validity = 1800s, success threshold = 25%, samples (min, max) = (8, 64)
        Private DNS mode: OFF
        No Private DNS servers configured

    Interface <-> last network map:
      Ifindex: 10 NetId: 100
      Ifindex: 9 NetId: 1

    Interface addresses:
      address: xxxx::xxxx:xxxx:xxxx:xxxx/64 ifindices: [26]
      address: 192.168.43.1/24 ifindices: [26]
      address: x.x.x.x/30 ifindices: [10]
      address: xxxx::xxxx:xxxx:xxxx:xxxx/64 ifindices: [9]

  Dns Resolve Records
  total records=1000
    rec[0]: 13:58:37 3961 10032  s*.com=127.*,
    ...
    rec[999]: 19:50:04 3961 10032  s*.com=127.*,

  TrafficController
    BPF module status: OFF
</code>```

So there are 2 DNS servers in rmnet_data1.

I think these are upstream servers dnsmasq would query.

Maybe it queryed the 10.x.x.x DNS server, which returned 127.0.0.1, then it cached this wrong result.

A reboot may have cleared this, or it is out of life time now.

I just found there's a --log-queries  Log DNS queries. option in dnsmasq.

So I would be able to see what exactly happens the next time I fail to connect to tools.ietf.org.

So it seems to be my upstream DNS servers' problem, with some probability of happening because there are 2 DNS servers?

So this is my ISP's problem? Not resolving some domains correctly?

Some very nice Q&A here:

DNS queries are cached permanently, how to reliably clear DNS cache on Android 7+?: explains DNS query in details

How does Android OS do DNS name resolution?: explains Android DNS resolv in details

Update 2 (guessing reason / answer)

I think this strange behavior (able to connect on phone, but not through hotspot) is because there are 2 DNS cache in Android, one in system & another in Java. (According to this answer)

Chrome & other apps are probably using Java cache. The dnsmasq native binary is using system cache. I guess this is why.

In the end, though already dug quite deeply, I still didn't find a good way to solve this.

Next time I encounter this problem, I'll still just change my laptop's DNS server to 8.8.8.8.


问:
An FB Contact name not displaying while calling, Only number shows up
I have a couple of contacts in my Samsung Galaxy S i9003 which runs Android 2.3.6, which are retrieved from my FB contact list. That means, those names and contact numbers are not saved in my SIM/Phone, they are only in FB. Since I have synchronized FB account, I can see those contacts from my contact-list. Whenever I call them or they call me, their names are not showing up and only numbers as if they are not in my contact list (And I don't have a clue on who is calling). But if I check my call logs later, I can see their number along with their name.

I want to see their names while they are calling. How do I do it in my case? Thanks a lot for your help.


问:
HTC Desire sticky power button
I have an HTC Desire that is 2 and a bit years old and in the hands of my wife and baby, now has a power button that barely works. Luckily the ROM I'm using allows the device to wake with the select button, but when the battery dies it is a real pain to power up. </p>

<p>Does anyone have any tips to fix it? </p>

Title: HTC Desire sticky power button


问:
How do I automatically save Downloads to a Dropbox folder?
The thing with the Dropbox internal folders is that Dropbox doesn't store its starred files as exact duplicates of the original file. So a starred PDF file on Dropbox isn't stored as a PDF file (although I haven't tried renaming it to see if it still works as a PDF).

I'd like to auto-save my PDF downloads to Dropbox so that when I annotate them, I'll be able to access them frictionlessly on my computer as well.


问:
Swedish language on my Android (Samsung Galaxy Ace)?

Possible Duplicate:

  How do I add a new language?

Just bought Samsung Galaxy Ace! I love it but the only thing I haven't been able to figure out yet is if and how can I have a language that isn't in the Input Language list, like Swedish for example?


问:
Samsung's Pen applications under CyanogenMod 9
Anyone run Samsung's pen based applications for their Galaxy Note running under CyanogenMod 9?  Are there any kernel driver difficulties with doing so? </p>


问:
Android 4.0 devices do not return majority of the discoverable Bluetooth devices
The observation about 4.0 may be wrong, but this s evident in both the 4.0 devices I have tested : Samsung Galaxy Nexus and Samsung Nexus S. (Nexus S is actually upgraded by me to 4.0)
In the other devices (HTC-Evo and ZTE-Optik), this problem is not there, compelling me to suspect 4.0 ; or Samsung as vendor.

The list of devices it is successfully able to scan have no "pattern" - it is random. It discovers the same device in one scan and may not do so the next time. Maximum 50% of the total devices in the vicinity are discovered.

EDIT : (Added more details)

The devices are close enough and the RSSI values are all > 60 dBm
All the "missing" devices are getting discovered through devices < 4.0.

To add some more details, I must say the problem is not with the "other" devices - the same device shows up in one scan and fails to show in other (on Android 4.0)
When I say scan - I only mean scanning through startDiscovery() in my code. If I do the scan via Device Settings, then all the devices are enlisted BUT many of them are only cached values - once I try connecting to some device, it says "Device not in range".

Any solutions ?


问:
Smartphone can't connect to Google's services unless resetting the WIFI connection
I'm using Samsung Galaxy Note 10 Plus, which has a very strange behavior that I can't explain.

Everything works fine with 3G, 4G. But if I use my home's wifi connection, sometimes I can't access google search, youtube, play store. For example, I'm using the phone and need to do a quick google search, I open Chrome and input the keyword in the address bar, then hit Go. The browser will show that it's loading the Google search, but will never finish unless I turn off the WIFI and reconnect, then hit F5 on the browser. The same issue for YouTube, Playstore.

I notice that this is the problem of my phone, because my wife's Iphone does not have the same issue, and laptops also dont.

Can anyone explain this?

OwnerDisplayName: EagerToLearn


问:
Does WiFi calling also send SMS over data lines?
Our only carrier in this area gives us one bar at home due to thick brick walls. I read that Android supports WiFi calling. This has helped phone call quality immensely. Does SMS also get sent via our WiFi so they are reliably sent as well?</p>


问:
How to show configure mount ext2 ext4 formatted SD card partitions in android file manager?
How to show configure mount ext2 ext4 formatted SD card partitions in android file manager?

As fat32 fiile system don't support files more than 4 gb I have to take backup  before after rooting for safety backup of system boot userdata  through twrp or DD if  command which saves files in sd card and the files of twrp images of userdata  mmcblk0 is more than 8GB-15GB and it requires to format sd card to ext2. As in adb shell or fastboot we can write on ext2 formatted partion is micro sd card

But ext2 ext4 file system ( I formatted partitioned with mini partition tool) is not readable in windows PC and when I inserted booted android 6.0 and open the android self file manager or xplore or.solid explorer or settings storage  without rooting it shows only reads  the first partition of fat32 but it don't shows the second partition there and.even in settings storage as it's not mounting reading the  ext2 ext4 partition and mounting it.  Firstly I have to read  the sd card and copy the images file on pc which is unreadablle unmountable in  android and windows both

I know we can do adb pull command and copy it to pc directly but I want to change file system of external sd card to ext2 or ext4 so that if I download big videos or create any big size files more than 4gb then it can save it fastly and secure in ext2 or ext4 file system

My queries :-

Q1. Can we use configure SD card second partition ext2 or ext4 formatted  for moving apps as it move default to first partition through SM or PM commands can second app be used only in link2sd can't we manualy through adb shell configure it or format  first or second partition as internal memory

Q2. So my question is how through any app or adb shell command I can mount or make sd card second partition ext2 or ext4 file system mountable readable in my android 6.0 mobile phone. Any way to edit FUSE bind in boot.init without rooting or any other way apps  to make it readable.kindly guide steps as I am novice new to android adb and programming commands

Thanks for your precious time advice opinion suggestion and sharing knowledge.


问:
Will linked moved apps to sd card through link2sd works after unrooted mobile?
Will linked moved apps to sd card through link2sd works after unrooted mobile?

I want to move my apps to external sd card of my android 6.0 mobile it has option of formatting sd card to internal memory but still out of 100 user apps installed it automove auto save 30 apps to internal formatted external micro sd card and 70 user apps auto installs still remains internal memory which are unmovable thus filled my internal memory

I once tried link2sd with 3-4 years before my old android 5.1 mobile device after rooting it. But it got problem after rooting through kingoroot as it was open and some.malware corrupted it I recovered it back through flash stock rom but didn't tried it again. Link2sd smoothly automatically moved linked apps to second partition but I kept the mobile opened and didnt unrooted it and some root permitted apps malware or cleaner corrupted or deleted some system file that old time.

I want to know if I again root my android 6 mobile with proper stock ROM backup through magisk or su or kingoroot and use link2sd or app2sd and install move or link user apps to micro sd card second or first partition and then unroot it will the linked or moved app work after unrooting mobile as link2sd script runs scripts on every booting of android in boot.init so technically it's possible to unroot after installing moving linking apps through link2sd or app2sd will android recognise link2sd linked apps without rooting privilages permissions after moving can we unroot it again.

I want to unroot to safe mobile from accidently deleting any system root files by cleaner or anitmalware or any malware infection for security


问:
Access files from SD card (Android 8.1) from computer
I am using an additional SD card on my Android 8.1 phone. It is not formatted as internal memory, and I would like to keep it this way in case my phone fails.

The problem I now face is that I can't access photos in DCIM/Camera on this SD card through my computer. I tried connecting through mtp, and also by running a server (sshelper) on my phone. Unfortunately, the files remain invisible.

I have read that this is "by design", but it seems ridiculous to not be able to copy files from a storage area to my computer. Is there a reasonably simple way to achieve this?


问:
How can one turn off incoming videos in Google Hangouts?
I wonder how one can turn off incoming videos in Google Hangouts. I.e., disabling all videos for anybody else in the call when in a videoconference. The motivation is to reduce the network usage.

E.g. in Bluejeans:


问:
Is there an easy way to transfer many, but not all, files to an SD card?
I'm hoping to transfer my photos to a card (then my computer). The problem is the card is too small to handle all of them at once. Is there a way to select say half, or tell it to transfer until it runs out of room? Is there any alternative to selecting thousands of files by hand?</p>


问:
How to tell if an app is calling a system function and debug it
Super noob here for android. I have a dice app and I don't trust it! I want to see what is generating the numbers that it gives (1 through 6 each roll). To start with I was thinking I would see if it calls whatever system/math function android has for rand() (I assume there is one).
I don't have a version of the app with debugging enabled. Can I put a breakpoint (or whatever we call them these days) inside the system's rand() function to see if it gets called?
Thanks!</p>


问:
Reverse engineering the Stylo6 bootloader unlock
I've unlocked the bootloader and I'm analyzing the backups from before and after the unlock to find many partitions have changed,  I want to find a way that will anyone to unlock their bootloader in the stylo 6 also without the use of a paid tool</p>


问:
How to access to USB port from ubuntu emulator on android?
I installed userland on my Android device and I run Ubuntu on it and connect to it with VNC server, how can I access the USB port from Ubuntu? Is it possible at all?
If userland can't access the USB port, what about other emulators like androidnix?</p>


问:
Android incorrect reporting of storage usage
I have a moto g 7 power running android 10. I am attempting to clear out some storage. In the storage portion of the settings app, it shows 4.6GB of audio, but when I go to delete those files, it states there are none there.

I'm unsure if there are files the phone is somehow unable to detect or if its log of contents is holding an error. Either way, is there a way to clear out this storage usage?


问:
Possible to perform data recovery with dead cpu? (LG G6 - Android 9)
I've got a dead LG G6, suddenly freeze during normal using.
After force rebooting, it was completely dead even though connecting to charging cable.

Have already performed cpu chip-off and reballing, still the same symptoms as before.
The cpu (Qualcomm Snapdragon 821) was found dead and the mechanic told the data is non-retrievable because of the fde with cpu.

```<code>Research from internet:
- The data partition is encryted with the key stored in cpu
- only replacing normally-function cpu is not possible to power on the device
</code>```

Im wondering if chip-off technique applied to take off the ufs, reading it using a BGA153 reader on computer + brute-force decryption is possible or not.

The knock code(screen lock) is known, may perform dictionary attack without wild guess.
The screen lock is 6-step knock code.

Steps:

Extracting the full dump as a bin file

Performing a brute-force method(hashcat + physical analyzer) to the mounted storage

Good news or infinite waiting?

Thats absolutely my bad of not frequently backup the phone, want to make up the fault and retrieve those memory back.

Highly appricated to any advice on the issue, many thanks!


问:
Google maps unavailable issue solved by playing Spotify or Amazon Music first
I am frequently facing this issue.

I would connect my Android 10 phone to our 2021 RAV4 Android Auto USB.

Then Google Maps would close up on my phone.

While that happens, the RAV4 console would notify blue tooth disconnected and Android Auto connected. Wait till these messages are completed.

But when I click on the RAV4 console Map button, the console would notify that no Map application was available or that Android Auto disconnected.

But fear not, I have a way to solve the Maps availability issue by taking these steps.

Connect my phone to the RAV4 Android Auto USB.

Ensure I do not press the Map button on the RAV4 console yet.

Play Spotify or Amazon Music on my phone first.

Then press the Map button on the RAV4 console.

Questions:

What is Google doing wrong that Spotify or Amazon Music is doing right?

What are the protocol disconnects between my phone and the RAV4 Android Auto that is causing these frequent disconnects. Feel free to refer me to other StackOverflow coding sites.


问:
Want to install a custom rom (first time)
I want to install custom ROM on My Redmi 7A (pine)
And I don't want to flash a recovery instead I want to use the ADB and Fastboot I unlocked my Bootloader. It is Possible?
(I am a newbie to this kind of stuff (also bad english))</p>


问:
restricting mobile data for certain apps on Samsung Galaxy phone
Previously I was running Google Pixel OS on a rooted phone. I got tired of not being able to download certain apps due to the phone being rooted (netflix, banking, etc) so I decided to get a cheap Samsung (Galaxy A32 Purchased in Korea)

On this phone I cannot find any settings for restricting certain apps from using mobile data like I was able to do on the Pixel OS. Is this feature standard for all android phones or is it disabled on some OS's? Its really annoying because I don't pay for a lot of data, but I don't want to forget and accidentally start watching YT when I think I am on wifi but actually using mobile data.


问:
Help understanding Android permissions
I recently discovered there's a lot more to Android permissions than I originally thought. For example looking at the permissions for the Signal app, I've given it permissions that I would like to it have.

But if you tap on All permissions, there appears to be a lot more this app can do that I originally thought.

Is my understanding of this how it appears? For example it can "take pictures and videos" or "modify my contacts" - I don't want it modifying my contacts

Since I have Signal for privacy, this is very concerning. I've noticed similar things with (e.g.) Telegram. Have I understood this right?

Title: Help understanding Android permissions


问:
How to automatically set a CPU governor on boot?
There are apps that can accomplish this task (e.g. "Kernel Adiutor" and others), however they in turn require other apps that can grant them root access to begin with, which is a lot of modification for this simple task.

In any regular Linux desktop system, setting the governor at every boot would be accomplished by creating a script, for example in rc.local or a systemd-oneshot, that simply calls echo "<governor>" > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor after each system start.

What would be the Android equivalent of this solution?

Is there any way to automatically set the CPU governor without installing any apps?


问:
How can I Flash my Bricked Huawei P40Lite with stock firmware
My Huawei P40 Lite "accidentally" switched off while updating in recovery mode and is now stuck on the boot logo and turns off. I tried the eRecovery mode to download the stock firmware but it says "Get package info failed". I've tried flashing it using OTG and USB drive with dload folder and it didn't work. I've also tried using fastboot but USB debugging is off so I cannot use any flashing tool. Please Help!</p>


问:
No USB debugging on Lenovo Tab 7 Essential
My Lenovo Tab 7 Essential (TB-73041, Android 7) doesn't have the USB debugging option.

Can anyone help me?


问:
Phone vibrates only for first notification
Xiaomi Redmi Note 8 Pro, MIUI 12.5.1 (Android 11)

When the phone receives a stream of notifications (e.g. 1 message per 7 seconds), only the first notification is accompanied by vibration - other ones go unnoticed. If the message interval is increased (e.g. 20-30 seconds), the problem will be gone - every message has its own vibration and it works well.

it doesn't depends on app - I've got this with WhatsApp, Telegram, VK, Instagram.

Could you please tell whether this is bug or not? How to deal with it?

P.S. I've got the same thing on MIUI 12 with Android 10 as well.


问:
Force Google Photos to upload or sync photos when connected to WiFi even if the app is not open
Google Photos app has a cloud sync feature. However, based on observation, the photos are only synced when the user opens the app.

How to force Google Photos to upload photos when connected to WiFi even if the app is not open?


问:
Put like on YT Music song without wakening my phone with Tasker
I want to make a Tasker script to like the current song in YT MUSIC by holding down volume button for example. The perfect solution is that I can put likes without flashing the screen and silently, so as not to disturb at night.

I'm thinking to use the example of Google Assistant, it can give likes to the current track on command. I read the logs and found an event that looks like the right command:

```<code>A: Media Operation Type: media.SET_RATING sent to package: com.google.android.apps.youtube.music
</code>```

Next I tried to send Intent of this kind, but nothing worked:

```<code>Send Intent [
Action:android.media.action.SET_RATING
Cat:Default
Mime Type:
Data:
Extra:
Package:com.google.android.apps.youtube.music
Class:
Target:Activity
]
</code>```

Continued researching and came across a feature on the developer site:

```<code>onSetRating(android.support.v4.media.RatingCompat)
</code>```

But I don't know how to use the native functions through Tasker. It may be shell command, Java function or something? Can anyone help?


问:
Delete all files or reset phone automatically if I don't use my phone for several days
I want to set a time limit so that if I don't use my phone within that time limit, then it will delete/reset my phone data (everything).

Moreover, if I use/unlock the phone within that time, then the counter will start from the beginning.

Is it possible to do this?


问:
Password-Protected Notes Encryption
I have one question about the encryption algorithm used for password-protected notes.

I am an Android smartphone user and for taking notes, I use my phone's native Samsung's note taking App.

But, I don't know what encryption algorithm it is used with Samsung's note taking App (password-protected notes).
Does anyone know what is the encryption algorithm?

Please let me know.
Thank You

OwnerDisplayName: Mickey

Title: Password-Protected Notes Encryption


问:
Unable to transfer files from Mi A1 to PC and wifi is also not working
I have a Mi A1 device which I didn't use for months and today I charged it to root for some work. I am sure Wifi was working earlier, but not sure about USB file transfer. (I didn't check wifi this time, just charged and started the rooting process)

I was able to unlock the bootloader and root the device and while I was in TWRP, I was able to transfer files from my PC to the android device. After rooting this device, I am seeing this

When I tried turning the wifi on, it automatically disables the wifi. I click the enable button and it automatically disables.

I wanted to connect the device using ADB, but when I connect the USB cable to the PC, its not showing up in ADB. Its not even showing in windows explorer where you can transfer files.

I am not sure how to solve this issue.

Mi A1 device running Android 9


问:
SMS Apps as Front-end to Google Voice
Suppose I use Google Voice for text messaging rather than my carrier's SMS plan. Would it be possible to use SMS Apps such as Handcent etc. as the interface or front-end to GV's text messages?</p>

Title: SMS Apps as Front-end to Google Voice