问:
Micro sd card doesn't show up after I formated it as internal storage
I have the Xiaomi Mi A1 device and has Android 9 running on it. I just bought a new micro sd card cause my internal storage is full. When I first inserted it, I chose the option "format it as internal storage". I migrate the data, but it fails when it got around 60%ish, so I manually move some apps to the sd card from the app settings. However, not all apps has that option. I only able to move apps like Facebook, Ms. Word, etc. But I don't really think of it that much, I guess that's how it is. And now my problem is that, apparently, after I formatted it as internal storage, the sd card doesn't show up in the file manager (I use X-Plore and google files) because I also want to move my photos and videos. Though I was able to move some apps to it through the apps settings.

I tried to format it as normal storage (forgot the option name, "format as portable storage" I think?). It shows up in the file manager, and I can move my photos and videos, but now I can't move my apps to it. So my question is that

Is that how it is? When you format a sd card as internal storage, the file manager can't read it? or am I missing any setting?

I figured out maybe because my sd card is broken, I bought an SanDisk Ultra microSDHC UHS-I Class 10 and it says up to 80MB/s speed, 533x. Perhaps got a better recommendation?

Sorry for bad english, I'm not native.


问:
What is the most stable kernel for my ALE-L21 (2015) alice and ROM?
I'm pretty sure that this is already a weak legacy device but I want it to be useful and stable in performance to the max. Can you suggest the ultimate kernel for my 7.1.2 AOSP based custom ROM?

Note: I'm using a vanilla kernel.

ContentLicense: CC BY-SA 4.0


问:
Android 5.1 Emulated abd push give adb: error: failed to copy etc... remote Read-only file system
Hi I'm not trying to change the system just upload some file to the /storage/sdcard folder or /sdcard i do

adb push etc /storage/sdcard

and I get

adb: error: failed to copy 'etc' to '/storage/sdcard/etc': remote Read-only file system

the thing is only happens on android 5.1 it must be a bug i read many post about remount the system but it is not the system what i need to remount it is the userdata partition it should be writable, i have create many times the AVD maybe it is something i did but always i get the same result

if i do df in shell i get

```<code>/dev                   498.4M    28.0K   498.4M   4096
/sys/fs/cgroup         498.4M    12.0K   498.4M   4096
/mnt/asec              498.4M     0.0K   498.4M   4096
/mnt/obb               498.4M     0.0K   498.4M   4096
/system                  1.4G     1.2G   180.2M   4096
/cache                  61.0M    56.0K    60.9M   4096
/data                    7.7G   571.6M     7.1G   4096
</code>```

i can't upload files , if i install es Explorer says the sdcard it is unmounted but don't shows the internal storage where it is the internal storage ? some one can tell me please what it is happen here ?


问:
recover text messages
I have an Huawei running the latest Android.  I accidentally deleted some Very important text messages and they haven't been backed up.  Is there anyway I can retrieve them?</p>

Title: recover text messages


问:
if project treble aims to separate the platform and vendor partitions, why is the kernel source code needed when building system.img (platform)
if project treble aims to separate the platform and vendor partitions so they can be updated separately, why is the kernel source code needed when building system.img (platform) for AOSP, isn't the kernel source code provided by the vendor side?

p.s is the kernel source code used to build the core system/framework files or is it only used in the boot.img/recovery.img?


问:
no write permission to memory card storage from termux
is it possible to write/edit the files on the memory card with Termux

i tried the command:

termux-setup-storage

but it only gives the permission to write on my device storage(/emulated/0/)


问:
Conected to TV and control device via remote
I connected my Samsung Galaxy Tab S6 with my LG tv over HDMI and it works good so far.
But what I am missing, is the possibility to control my tablet with the LG remote controller.
When I connect my tablet via SmartView it works, but not when doing so via HDMI.
(I want the connection to be via HDMI because of different reasons.)

Is there some option that I missed?
Or is it simply not possible to send the needed signals over HDMI to my tablet?

If so, do you know of some workaround? Like connecting your smartphone to the tablet and use it as touchpad? I would like to avoid buying a bluetooth mini keyboard.

Kind regards


问:
unable to flash rom in edl mode using linux qdl or even qfil or miflash. what could be the error?
i have a redmi note 3 snapdragon variant.
i was using it casually and i pulled its back cover and wassss in deep thoughts when i accidentaly or stupidly removed the battery flap when phone was on. i put thhe battery back it didnt turn on and i plugged the charger it gave red blinking light no screen on. so it was stuck no change even after many methods.

i plugged it in windows laptop and was surprised it recognized as in edl mode(although not instantly learned becuase i am not much knowledgeable).

so after trying many miflash or qfil or and many tricks for them given by xda, i couldnt flash the rom, so many sahara errors or hello packet errors.
i tried the linux method and it still gave hello packet error on linux using qdl tool.

so i am not sure if emmc is damaged or its is locked. in one xda thread one guy said it could be emmc read or write locked. any tips.

update; the error or log i recieve:
HELLO version: 0x2 compatible: 0x1 max_len: 1024 mode: 0
READ image: 13 offset: 0x0 length: 0x34
END OF IMAGE image: 13 status: 20
received non-successful result


问:
My Galaxy Tab A SM-T510 won't unlock security screen with correct code or thru find my mobile unlock
My tablet won't unlock screen with correct code , clicks into wait try again in 29 seconds . Using the find my mobile site try to unlock screen that way , comes back with Something went wrong and does not unlock. Any other way to get into it without having to do a hard reset</p>


问:
what can i do to bring back to life mi samsung galaxy a 51?
Days ago my phone restarted and stopped on the android/samsung logo.

i tried to do a hard reset on the recovery menu, but when the process finished the phone stopped on the android logo again. i did this process many times but it happened again.

after that i tried using Odin3 to install an official firmware, the process finished successfully, but when it restarted again stopped on the logo. i turned off the phone with the power off and volume down buttons, then i used the recovery mode (i tried to much to access to it, i was thinking that i cannot access to) combination keys, i did the hard reset again, and it showed the charging icon (seems to be frozen with no animation, some times happens). i cant turn it on disconnected to the pc or charger.


问:
Backup MMS on Android without Google Play Services
Is there a way to backup and restore MMS without Google Play Services? I'm running Graphene OS on a Pixel 3 (no root). Thanks in advance!</p>


问:
How can I find / transfer a single app's data files to a new phone? (unrooted)
I just got a new phone and I was able to have almost all my apps and data transfer over without an issue. Neither phone has root access.

But a couple apps (a game, a cocktail app) didn't transfer their data and don't have sync options.

I've looked through File Explorer but I can't seem to find an obvious folder for app data. I swear this used to be accessible but I assume it got changed around at some point.

I have dev knowledge so if I need to use adb or something I can. That said, ideally I can do this wirelessly because the old phone can't seem to be found by my computers.

How do I find the data files for an app?

Once I have the files, are there any extra steps beyond copy/paste like permissions or using adb?


问:
SoC compute-resource usage monitor for single app
I need to understand the compute resource usage of a compute-intensive app; this includes the CPU (ideally including the core ID), GPU, DSP, AI Engine in the processor (for Quallcom chips). I have found many ways to track the CPU usage per app, but am yet to find one that tracks the GPU or DSP usage per app.

What can I use to monitor the compute-resource usage of an app?


问:
What to do if my legacy device gets slower when Xposed Framework is enabled?
I'm using Xposed Framework 89 ver. on my Android 7.1.2 AOSP custom ROM: AOSiP which makes it slower but once I disable it my phone gets faster than the state of enabling. What can I do? Is there a lite version of it?</p>


问:
fastboot commands work. fastboot oem commands hang
My final objective is to do "fastboot oem off-mode-charge 0".  I've done this successfully with a Teclast P80H.  But I'm having trouble with a rino3 pro.  Specifically:

"fastboot devices" shows me "mt6572v1_phone fastboot" and "fastboot --version" shows me "30.0.4-6686687".  "fastboot reboot" works.  "fastboot reboot bootloader" works.

However, "fastboot oem " seems to never return back to my Windows Command Prompt.  It seems hung.  "fastboot oem off-mode-charge 0" hangs.  I must control-C to get out.  "fastboot oem device-info" hangs.  "fastboot oem junkyjunk" hangs.  It seems that ALL/ANY "fastboot oem" command hangs.  ("fastboot eom" with no following command, of course, returns "fastboot: usage: empty oem command.)

Well, maybe it's not strictly oem commands that hang.  "fastboot flashing get_unlock_ability" seems to hang as well.

My device is a rino3 pro.  Android Settings tells me "Hardware: MTK6763" and "Processor: 8 core" and "Android 9.1" if that matters.


问:
Is it possible to add insurance cards to Google Pay?
I just received a new insurance card and would like to keep it in Google Pay. It's not a debit card that can be scanned as a method of payment; I would just like to keep digital copies of all of my cards in a single place on my phone. My State Farm app gave me the option of saving a copy of my car insurance to Google Pay, and I'm hoping there's a manual way to do this for other cards.

I've tried using the Add Pass feature, but there doesn't seem to be an option for just uploading an image.


问:
How can I restore a local backup of WhatsApp to a specific data profile created using Titanium backup app?
In Titanium Backup app I have multiple data profiles for WhatsApp. I am using WhatsApp in 1st data profile and I need to restore a local backup of another WhatsApp number to 2nd data profile. How can I do it without uploading it to Google drive ? Where are the data of apps stored for each Titanium Backup profile ?</p>


问:
Why is Wechat consuming a huge amount of storage
I am a very light wechat user, using it only for work to communicate with suppliers, yet my wechat constantly gets bloated, have had to clear it every month or so.

Below is an image with wechat consuming a large part of my internal storage.

Often people talk about the media taking most of the data, but this doesnt seem to add up with this image

Edit: The second ~13GB is also related to wechat, it is under com.tencent.mm/MicroMsg/xlog/...

After a app info -> clear storage it looks like this.


问:
How to change a thermal printer’s Bluetooth baud rate?
I want to print image using thermal printer through Bluetooth from Android device.

I connect Android phone to printer (printer model: XP-318B/XP-318BM) through Bluetooth then by using BluetoothPrint app I send command to print image, the printer started to print a part of image then it stopped for half second and than it resume printer then it stops for half second then resume and it continues like this until it finish printing the image, white rows appear at the places which the printer was stopping as in the image.

First, I thought it was a programming issue, so I connect the printer though USB and then printed the same image it perfectly printed, so I'm thinking it is the baud rate of the printer's Bluetooth.
I search for two days with out any good results  how to change the baud rate.

I found these tutorials, but I couldn't change the baud rate .

“Instruction of Change Baud Rate for Bluetooth Printer (To 115200bps)”

“How to Set Baud Rate for 58mm Thermal Printer”

What can I do?

OwnerDisplayName: hatore


问:
Rooting Huawei mediapad T3 7 Wifi
I want to flash magisk on my device but i haven't been able to unlock the bootloader. I was wondering if i could patch the boot.img of the firmware file i found online then flash it with spflash tool. Would it work? Has anyone tried this?</p>

Title: Rooting Huawei mediapad T3 7 Wifi


问:
Android 11 root process shows "no valid slot to boot" after flashing patched.img
This is the first time I've rooted a phone. I have a Google pixel 4a, running Android 11. I use Ubuntu 20.04 and have a limited knowledge of the command line.

I followed the process at this xda-link fairly smoothly until the last step before confirming root.

After extracting the stock boot.img, patching it with magisk manager, and running the command:

Fastboot flash boot magisk_patched.img

The Google logo pops up for about 10 seconds and then kicks me back out to fastboot mode. The "reason" displayed on the fastboot menu screen after this says:

No valid slot to boot

Im lost as to why this is happening, and I cant seem to find many people with similar issues. Which leads me to believe that I've missed something simple. Thank you for any insight, it is greatly appreciated.


问:
How goes The Guardian make (multi-) coloured notification icons?
The election notifications have a red and blue notification icon which remains coloured even in the notification bar (while other icons are monochrome to fit with custom themes).

I thought android no longer allows this? How did the devs go about it?


问:
Is there a way to recover deleted photos?

Possible Duplicate:

  How can I recover a deleted file on Android?

  Data Recovery - How to Restore Deleted / Formatted Files on HD Micro SD Card

Is there a way to recover deleted photos from my device? I deleted some pictures but now I want to restore them. I tried several file recovery applications, but they only gave me empty image files.

ContentLicense: CC BY-SA 3.0


问:
Factory reset not improving performance
I've been having some problems with my Razer Phone 2, running Pie.  I wasn't getting MMS messages from some people.  I tried doing a factory reset without restoring any my my data.  It doesn't work well at all.  After the factory reset, and reinstalling both the Amazon app and the Audible apps, they are so slow as to be unusable.  Is there a better way to do a factory reset than through the System > Reset options >Erase all data (factory reset)?</p>

Title: Factory reset not improving performance


问:
Stuck in Bootloader
I have a rooted Pixel 2 XL that I was upgrading the OS on and when I attempted to do a sideload for TWRP, it got all messed up. Now it won't go past the bootloader and keeps randomly rebooting while on the bootloader. It appears to not read fully via USB, as it either shows the SN or ??????????? when I do fastboot devices. I've tried reloading a new bootloader to no avail. I'm also unsuccessful at flashing a new OS. Hoping someone can help.</p>

Title: Stuck in Bootloader


问:
How to make a complete backup from rooted device to non-rooted device?
I would like to get my data from an old rooted android phone, to a new android phone which can't be rooted. adb backup and helium aren't able to get all of my data from my rooted phone.

Is there a way for me to use the power of root in my rooted phone to make a backup, and then through non-root means restore the backup to the non-rooted phone?


问:
Upgrade LG V35 Thinq to Android 10
According to many sources, Android 10 was released for the V35 earlier this year.

According to (the only US carrier for this phone) AT&T's website, the most recent version for this phone is Android 10 at the May 2020 patch level. (Confusingly, that same page also says it is still only Android 9.)

However, my phone says it is on Android 9 with the July 2019 (!!) patches being the last that were applied, but when I check for updates, it says "Current software is up to date".

These updates appear to only be available from AT&T over-the-air, not from LG directly, and this phone no longer has service (I use it for app development and as a music player) so AT&T can't/won't help me.

Is there a way to update this phone?

Title: Upgrade LG V35 Thinq to Android 10


问:
Is this possible in Android that a file/folder can have multiple owners and group?
So in my scenario, I am trying to assign multiple groups, the user to a file in /dev/. So I have created a custom AID in config.fs and the corresponding [path], mode, caps parameter also configured. Also modifies my apk to uses this new gid.

At runtime, I saw that a custom group is created and my process(java process) also has this custom gid in Groups(cat /proc//status). But still, I can't perform the operation on /dev/* file.

So my question is this possible in android that a file/folder can have multiple owners and groups?


问:
ERROR Unable to retrieve local hardware address libnet (ioctl: Permission denied). iptables (2) failed
hi I tried to install network spoofer but it gives me this error and not only with this app but also with others it knows how to solve I already have the root</p>


问:
Getting back to the first-time phone transfer wizard without factory resetting
During the first-time setup process, Android asks to connect my new phone to my old phone with a USB cable. I'm not ready to transfer yet but I want to test drive the phone. Is there a way to get back to that transfer wizard?</p>


问:
Is it possible to attach phone with USB c port to PC and 3.5mm audio out at the same time
I have a google pixel 3. It only has a USB c port, no 3.5mm audio jack. I would like to be able to connect my phone to a PC via usb to enable adb access and at the same time get audio out of the phone with a usb c to 3.5mm jack type adaptor. I had thought that I could achieve this with an adapter like this:

However, I got one of these and while the audio output works, the usb C connection only allows charging and no data connection to the pc. I was looking at usb c hubs but I am thinking that these would only work with the phone as the host/master and the devices plugged into it as slaves.
Is there any way to achieve what I want?

The reason I want to do this is in order to use scrcpy to remote control the phone from the pc while also getting audio out of the phone.


问:
Background apps not working
I use this app on SM-J7 with Android 8 to check my internet connectivity. I hardly use this app as I get to see what I require in the notification bar. But every day, I am forced to manually open it to make it work.

I also face the same issue with this but this one works fine, although both of them run in the background.

I have installed the same apps on another device (SM-M30 with Android 10) but there the apps start working on their own after the phone is switched on.

What is causing this? Any remedy?

Title: Background apps not working


问:
Unlocking the bootloader Huawei P8 Lite 2017 (PRA-LX1(C02)
I'd like to have my bootloader unlocked for my Huawei P8 Lite 2017 (PRA-LX1(C02)), but I don't wanna spend money on DC-Unlocker. My phone runs Android 8.0 EMUI 8.0 but I can downgrade it to Android 7.0 if needed. If you need IMEI, Serial Numbers things like that ask me and I'll provide those.

Thanks in Advance!


问:
Restoring the /data partition on Android 11 yields an unlockable phone
I have a Xiaomi A2 which went into a bootloop due to a buggy Android 11 OTA update. It's a bug in the update, and a lot of people are affected.
My phone really had a rather vanilla setup (original Android One ROM). The only exotic thing I did was to unlock the bootloader. Everything else is untouched.

When I installed the Oct 2020 OTA update (version V11.0.15.0.QDIMIXM) my phone went into a boot loop. So I booted on TWRP from fastboot, and using adb pull /dev/block/mmcblk0p69 data.img I got an entire disk image of my data partition on my PC.

Using fastboot I then flashed the previous known-working OS version (version V11.0.14.0.QDIMIXM) but then when I boot my phone I now have a weird problem: my PIN isn't recognized anymore! If I try and remove /data/system/locksettings.db from TWRP, then it does remove the PIN and I can "log in" with a swipe, but then the phone gives me a never ending spinner. I assume something is wrong with File-Based Encryption and the fact that I didn't provide a PIN.

Question: why is my PIN not working anymore? How can I get it to work?


问:
How to enable an "Always on Display" mode in Nokia 9 for JUST notifications?
In Nokia 9 with Android 10, I set Settings=>Display=>Advance=>Screen timeout to 30 seconds, but I still like be aware when I have notifications waiting to be reviewed.

In Settings=>Display=>Advanced there are Glance view options:

The default Glance display duration is 30 seconds. But I like to see all of the notifications which I missed when I wasn't around my phone, so I've changed it to Always on...which got the screen to be constantly on!

True, it's not "fully" on. It's a black screen with a clock and battery percentage. But is there any way to keep the screen completely off and only keep the glance screen on if I actually have notifications waiting to be reviewed?

In other words, see how Wikipedia describes what I want:

Typically, an Ambient display solution which turns on the screen only when notifications are present, remains on, but turns off when they are dismissed.

- Always on Display, Wikipedia

Here is what I get when the screen is supposed to be turned off:


问:
Encryption: can't decrypt data after rom downgrade
I downgraded an Android 10 custom rom while I had encryption enabled (rom).
Basically I dirty flashed a previous minor version of the rom via TWRP (with just a simple "wipe cache/dalvik").

After the reboot my pin was not recognized by Android (and TWRP), so I could not access any data.

After a few tentatives I typed "default_password" as pin, when asked during the boot, and there was an important change:

After the subsequent reboot I typed my original pin, and now Android always shows: "The password you entered is correct, but unfortunately your data is corrupt". This happens every time at the system boot, and it won't let me type any pin.

TWRP accepts the original pin, but it's "unable to mount storage". If I type "default_password", or anything else, it's not valid.

In TWRP the system partition's contents are now visible: before they were not showing at all. But the data partition is not accessible (error decrypting…).

I have done a lot of studying to get the phone working without formatting, but I could not solve the issue. I don't think the data is actually corrupted.

I read that there is a Android security mechanism called "version binding": "Version binding binds keys to operating system and patch level version", … "any reversion of the device to a previous release causes the keys to be unusable".
This could explain what happened, but I have many doubts.

Knowing this, I flashed the original version of the rom (the one I had before this issue), but nothing changed.

I took a look at logcats and recovery.log and I noticed the following message: "Error starting keymaster signature transaction: -21".
Here is a extracted part from a recovery log, after I enter the pin in TWRP:

```<code>I:Is encrypted, do decrypt page first
I:Switching packages (TWRP)
I:Set page: 'decrypt'
I:Set page: 'trydecrypt'
I:operation_start: 'Decrypt'
D:crypt_ftr->fs_size = 52453304
I:starting verify_hw_fde_passwd
I:Using scrypt with keymaster for cryptfs KDF
I:TWRP keymaster max API: 1
I:Signing safely-padded objectkeymaster module name is Keymaster QTI HAL
keymaster version is 256
Found keymaster1 module, using keymaster1 API.
Error starting keymaster signature transaction: -21
E:Keymaster signing failedE:scrypt failedI:Extra parameters for dm_crypt: fde_enabled ice
I:target_type = req-cryptI:real_blk_name = /dev/block/sda14, extra_params = fde_enabled iceE:test mount returned 0
I:Found no matching fstab entry for uevent device '/devices/virtual/block/dm-0' - add
I:Found no matching fstab entry for uevent device '/devices/virtual/block/dm-0' - change
Data successfully decrypted, new block device: '/dev/block/dm-0'
I:Can't probe device /dev/block/dm-0
I:Unable to mount '/data'
I:Actual block device: '/dev/block/dm-0', current file system: 'ext4'
Updating partition details...
I:Can't probe device /dev/block/dm-0
I:Unable to mount '/data'
I:Actual block device: '/dev/block/dm-0', current file system: 'ext4'
I:Unable to mount '/usb_otg'
I:Actual block device: '', current file system: 'vfat'
...done
</code>```

Could you please point me to the right direction? I am trying to understand what could have gone wrong, and find some possible solution.

How is the pin still accepted as correct, but not able to decrypt the data?
I think that there is something that prevents it from working.

I can recompile the rom with my own modifications if needed, and post other logs. Thanks for any help.

Additional logs.

the partition is still encrypted

hexdump -C -n1088 /dev/block/dm-0

```<code>00000000  06 27 35 9d 5e 75 e0 ff  e0 53 2d 23 f4 99 d3 9d  |.'5.^u...S-#....|
*
00000400  8c cb fb 69 ad 08 1f 75  03 b1 4c 51 54 84 c6 b2  |...i...u..LQT...|
00000410  f4 f2 c9 75 b8 72 e5 f4  68 76 81 16 a8 cd 33 c8  |...u.r..hv....3.|
00000420  e4 64 c4 70 5f 56 55 72  24 3c 44 dc 5e f0 4d 9b  |.d.p_VUr$<D.^.M.|
00000430  05 ca 91 e3 52 b2 09 2b  b0 0c 8b 32 13 2c c2 3d  |....R..+...2.,.=|
</code>```

compared to a ext4 image (magic 53 ef at offset 0x438)

```<code>00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000400  e0 33 18 00 f3 bb 60 00  00 80 00 00 6c a0 2a 00  |.3....`.....l.*.|
00000410  9c 16 17 00 00 00 00 00  02 00 00 00 02 00 00 00  |................|
00000420  00 80 00 00 00 80 00 00  f0 1f 00 00 bd 76 59 5d  |.............vY]|
00000430  bd 76 59 5d d1 00 0a 00  53 ef 01 00 02 00 00 00  |.vY]....S.......|
</code>```


问:
Wrong aspect ratio for video sent with WhatsApp (only when trimmed)
When I take videos with my Sony Alpha 5000 and transfer them to my Android device, the aspect ratio looks fine in all players tested (F-Stop, VLC, MX Player Pro, ES Media-Player).

When I send such a video with WhatsApp and keep the full length, it still looks fine. But when I change the video length in WhatsApp before sending, the video will be sent with a wrong aspect ratio (squeezed):

(Top message: full video; second message: trimmed video played with a wrong aspect ratio)

This is a link to the video in case you want to reproduce what I did:
https://www.dropbox.com/s/ovp1j9mmb49exq2/MAH05890.MP4?dl=1

Has anybody observed this issue, too? Is something wrong with my video file?

EDIT:

I have recorded another video in landscape mode and replaced the original screenshot/video link in order to make clear that this issue is not related to a wrong video orientation in this video's metadata.


问:
Unable to connect to wifi on Nvidia Shield Portable
Recently picked up a used Nvidia Shield Portable to play around with. Digging it so far, but it refuses to connect to my Netgear Nighthawk MR60 Router and I'm not sure. Right now I have to tether off my phone just to use internet. I'm running stock android 5.1 with the latest updates

Best I can figure looking at the logcat logs from ADB is that it has something to do with this line.

```<code>W/wpa_supplicant(  583): wlan0: WPA: Failed to configure IGTK to the driver
I/wpa_supplicant(  583): wlan0: RSN: Failed to configure IGTK
</code>```

I don't have my device rooted, so I don't know if I can disable PMF in the wpa_supplicant.conf. Any ideas?


问:
Lock computer USB connection with anther password
I'm looking for a way to lock computer USB connection with second password, not with the regular lock screen password but with a different password. Thus, people who already know the password of my device will not be able to transfer files and connect it to the computer without the other password.

There is an app on the play store that called:

Smart AppLock (App Protector)
https://play.google.com/store/apps/details?id=com.sp.protector.free

It has the so-called option "USB Connection Lock", but it isn't working... Is there a similar way to do it? I searched the internet but did not find anything close.. maybe some code to use with ADB?


问:
Touch screen not working on some screens even after factory reset
My touchscreen no longer works at all, on MOST screens.

However, there are some screens where the touchscreen consistently works perfectly, so it is extremely difficult to believe that this is an issue with the touchscreen.

The screens where it always works without a problem:

On the lock screen where I swipe up and then enter in my pattern.

The menu that appears when the power button is held for a second or two.

The home screen, where I can swipe left/right and navigate my app list.

My device is the Sony Xperia L3 and I'm using the default launcher.

After factory resetting my phone, the problem persists. I cannot get passed the setup screens. However, once again, the menu that appears when the power button is briefly held works perfectly. I can tap any of the 3 buttons, or tap away, every time.

I dropped my phone 10 months ago and there is a fairly big crack at the bottom right of the screen, and a tiny hole which seems to lead in to the internals. Up until now, it's been working fine. Not only is the touchscreen now acting up but the pixels on the screen are very glitchy.

Any ideas what the problem is and how I can fix this? Again, I'd like to reiterate that for some bizarre reason the touchscreen works fine on certain screens 100% of the time, so I'm hoping that there is some solution without requiring repair or getting new phone.

One possibility why the touchscreen works on some screens and not on others is the following: Perhaps there is a small section of the touchscreen that is constantly being tapped on because of the damage. This would mean on some screens, it thinks I have two fingers on the screen, and thinks I'm trying to zoom and therefore won't let me do anything else. On other screens, it is coded in a way that ignores the second finger.

However, with this possibility in mind, I tried installing the "Partial Screen" app. This allows me to disable the touchscreen on certain sections of the screen. I tried disabling the top half, with the bottom half still broken on the screens where it normally would be. I then tried disabling the bottom half, with the top half still broken on the screens where it normally would be. When I first started the app, it tried to scan areas of the screen with a problem and none were found. So this is making me believe that there is no issue on the touchscreen with areas being constantly tapped on.


问:
Contact that cant be made a favourite
In my contacts on my Samsung phone I have a contact that I cant "star", other contacts have that star you can click on to make them a favourite but this one contact that just isn't there. I've tried creating a new contact but it just won't let me make her  a favourite.

Any idea why?
Thanks.

Edit:because I can't add comments.  Its a Samsung S10e OS ver G970FXXU9DTJA

Title: Contact that cant be made a favourite


问:
I want to modify the user interface of android for my device, is this possible if the OEM didnt provide the source code?
The device is running android pie and i know that my build version is PPR1.180610.011 and its already currently running AOSP, however its the ALPS variation (which i think is mediatek's version (closed source)  of AOSP where they just augment the telephony based apps so it works with their HALs, while the android UI remains vanilla).
I want to modify the theming/ui parts of android (which im sure most of it resides in (system\system\framework\framework-res.apk) as shown in https://prnt.sc/vfn6r3

However as mentioned above there are some proprietary binaries shown here https://prnt.sc/vfn85h

Is it possible to build AOSP for my device (after making my desired theming enhancements) and then just migrate the proprietary binaries into their correct directories?

Or should i be looking at decompiling the framework-res.apk and recompiling it and then repacking the system img file?

P.S the bootloader is unlocked and i already have access to the unpacked partition img files

p.s installing xposed or any other theme modifying software is not an option as i dont have a custom recovery such as TWRP


问:
Samsung Account Notification won't go away
I recently updated my Samsung A10e to Android 10 with OneUI 2.0. When it finished updating, I got a notification requesting me to "sign into my Samsung account to safely use some services". I forgot the password so I reset it accordingly, and then I (thought that I) finished.

Except then it gives me a notification asking "we need some more information to finish setting up your Samsung account". I enter the requested information and hit "done". Then, almost seconds after hitting "done", the notification pops up again, requesting the same thing. When I go back to the screen where I was to enter information, it still showed the information I already entered, but the notification WOULD NOT go away!

Help would be appreciated, as this notification will not go away.

Thank you for your help!


问:
TWRP won't select USB drive with USB OTG cable
I have a USB OTG type C cable with a flash drive connected to it. The flash drive is formatted with FAT32. The phone can see it, TWRP can see it, but TWRP can't select it. In TWRP I try to mount it but when I press the option it doesn't get selected. It says "(OMB)" beside the option, but there's several GB of space available. I have an SD card that can be selected fine. I'm running TWRP 3.3.1 on LineageOS.

How can I chose to make a backup to the flash drive over USB OTG?


问:
What app is org.codeaurora.snapcam?
I found this app with package org.codeaurora.snapcam showing up on my Google Activity. It say I used it, but also it doesn't show any details of what it is. It just shows details of my phone. I have Hot Pepper VLE5 phone and also a Samsung A20 which my husband uses but were on the same Google account on both phones.

My husband thinks it is a secret app that I use to hide things like messages and pictures. I love my husband very much and I know that is not true. I did some research of it but there was not many accurate answers. What I understood is that it's a camera app called camera apk, but I wouldn't know if it's that. I have seen a lot of apps on Google Play called Snapcam, but that is a photo editor and i don't use those kind of apps. So it can't be that.

I just don't know why this org.codeaurora.snapcam shows up on my Google activity saying I used it. I really need to know what this is. I'm so confused I would really appreciate your help. Thank you.

Title: What app is org.codeaurora.snapcam?


问:
Is it possible to run old apps on newer versions of Android? If so, how?
I'd like to run an older app that is no longer compatible with my current OS. However, I don't want to set my device back to an older OS. Is there any way to make old apps work with a newer OS, or is an older OS my only option?</p>


问:
TWRP can't access internal or SD storage (0MB) after crash+bootloop on LG G3 D855
After a random system crash my rooted LG G3 (D855) fails to boot into android (Android 10, Lineage OS, boot loop). As I have a recent backup on my SD card, I'm trying to restore to that in TWRP (3.4.0.0) but here's the problem - I can't change storage to the SD card where the backup or any other files are - TWRP shows "0MB" both for Internal Storage as well as for Micro SD Card.

I followed some guides suggesting to Wipe and Format data, but nothing seems to help.
I never set up any encryption, my lock screen was set to simple swype, no pin, etc.

My SD card, when connected to the PC, works fine, all backups, ROMs etc are still there, but I can't access any of it in TWRP.

I don't care about any data or installed apps, just want to access my SD card in TWRP to run Restore from Backup or at least reinstall ROM.


问:
Unable to get songs onto my phone without breaking them
All of them are in mp3 format and are perfectly playable on my PC. Here are the ways I tried.

Connect both devices via USB. File transfer is enabled, I can see the filesystem of my phone on my PC. The copying process always stops midway, even when I tried to copy one song by one song.

I took out the micro SD from my phone and put it in the PC which has an micro SD slot. Copying works?, but destination files are all broken and unplayable.

I went to the place where I originally downloaded the songs onto my PC, which hosted them as an rar archive on Google Drive. I tried to download the archive directly to my phone, but the archive disappears from my phone's filesystem after the download is done.

What is happening to my phone? It's a Asus Zenfone 5 running on Android pie. The micro SD card is about 7 years old.

Edit: I tried a few more things after posting the question initially:

Checking the filesystem of the micro SD card on Windows 10 reveals no errors.

Using FTP inbuilt on my phone, I can copy the rar archive from my PC to my phone's internal storage. After that I tried copying it to the micro SD card with a file manager on my phone. After the copying process is done, the archive is no where to be found on the micro SD card.

It seems like the problem is not my phone, but the micro SD card making the files disappear after copying the files onto it.


问:
How does virtual A/B software update work?
https://source.android.com/devices/tech/ota/virtual_ab

is there any additional information or links related to the topic of software update in virtual A/B partition?

Asking for a virtual A/B update not A/B seamless update.
More info of this link details https://source.android.com/devices/tech/ota/virtual_ab


问:
Apply update from ADB: how to use it when you are locked out of the device
My cousin's kid has played with his Samsung A8 (2018) phone and has changed his unlock pattern. So, nobody knows the pattern the child has set.

The phone has no Google account set up

The USB debugging is not activated on device before

I have rebooted into recovery mode, and entered the option Apply update from ADB:

There is a message on recovery screen saying:

Now send the package you want to apply
to the device with adb sideload <filename> ...

I'm able to see the device by adb devices command:

According to another post, looks like it is possible to use TWRP for Samsung Galaxy A8 2018 to clear the screen lock. So, I have downloaded the following apk package:

Now I plan to install TWRP on phone by the following command and then follow the previous post:

```<code>adb sideload me.twrp.twrpapp-26.apk
</code>```

Questions

Now, before doing so, I have these questions:

Is it possible to install *.apk packages by adb sideload? Is there any possibility that it would mess up the phone?

What else can I do with adb sideload to clear the screen lock?

What else can be done with adb sideload to back up the phone camera images and videos without wiping the data?

Thanks =)


问:
Switch Between 2 profiles on android during device unlock
I have 2 profiles setup on my device as shown here

https://www.howtogeek.com/333484/how-to-set-up-multiple-user-profiles-on-android/

However the switching of accounts as shown here is cumbersome. Is there any app/ approach where I can enter something to unlock phone(separate pin) that will load the profiles appropriately.I sometimes hand over my phone to family and don't and switching profiles after unlocking takes too long.


问:
Making a device to simulate low battery early
I have device which is used commonly by a layman kin. She does not really understand, why spares the battery if we do not wait until it goes to zero. She thinks, the device needs charge only if it was powered off due to battery exhaustion. I have no way to change her mind, but I can install or set up on her (non-rooted) Android as I want to (including adb access, if needed).

I think, maybe some app could power off her phone if battery level goes under, for example, 35% or so. Alternatively, maybe the battery load calibration could be changed to consider the actual battery level lower as it really is.

What to do?


问:
Enable USB debugging through recovery mode and ADB sideload
This is a follow up question to this one. Basically, I intend to somehow use this command to remove the lock screen:

```<code>>adb sideload customROM.zip
</code>```

But, the customROM.zip should be something like described here to enable USB debugging. The problem is, those steps are incomplete:

Steps to Enable USB Debugging Using Recovery Mode

Unzip the stock ROM.

Within the extracted folder, you will find the system.img well extract it too using Ext4 Unpacker

Also, extract the Update-SuperSU.v1.65.zip file.

Now open the folder where you have extracted the system.img files

Grab any .apk file from this folder and change the extension from .apk to .zip

And Copy the RSA Certificated to the Update-SuperSU.v1.65 folder (delete previous files if exist)

Also, copy the build.prop to the system folder located within Update-SuperSU.v1.65 folder

Locate the update-script file within this folder and edit it using Notepad++

You need to update the build.prop file after adding the following line at the bottom
persist.service.adb.enable=1

Next step is updating SQLite Database

Which can be done by adding the following code to the update-script file
sqlite3 /data/data/com.android.providers.settings/databases/settings.db "UPDATE global SET value=1 WHERE name='adb_enabled'"

Cheers! You have Enabled USB Debugging
Now you can install your custom or stock ROM using ADB – USB Debugging

Although the above steps seem incomplete, they look convincing that there might be a way to modify a stock ROM to enable USB debugging by:

```<code>>adb sideload modified-stock-ROM-which-just-enables-USB-debugging-and-does-nothing-else.zip
</code>```

Is there any better explanation than those steps?


问:
how to fastboot mode without Enable USB Debugging?
I have a cellphone which I can't get access to the system, so Enable USB Debugging is not a option here. I need to factory reset this phone or upload a fresh firmeware to make it functional again, I figure it out that the way to do it is through Fastboot.

So, is there a way to unlock Fastboot mode in this phone without having to Enable USB Debugging?

Meizu Pro 6 Plus


问:
Dialer that shows nickname instead of Firstname Lastname
I am desperately looking for a way that would show Mom instead of Jane Doe when I receive a call. Right now, Google Contacts app allows to search by word mom but it's not shown in Dialer/SMS/WhatsApp etc

UPD: I was advised True Phone Dialer & Contacts & Call Recorder but I don't see much configurable settings for the requested feature


问:
Android Game stuck on downloading resources on OnePlus 6 / OxygenOS 10.3.6
Recently a game I have been following since day one got an update and my OnePlus seems to have a problem downloading the resources of the update.

Here is a screenshot of the game:

As an aspiring developer myself I would like to know what causes such an issue and what the possible fixes are?

I'm from Bulgaria, tried 2.4G WiFi, 5G WiFi, mobile data, reinstalling, phone has more than 100GB free storage.

Thanks in advance!


问:
How to disable apps from using "keep screen on"
Some apps use FLAG_KEEP_SCREEN_ON to stop the screen from turning off -- is there a way as a user to override this (would be useful when going to sleep)</p>


问:
Scroll problem with mouse and my tablet android
I  have a HUAWEI MediaPad M5 Lite 10 tablet I use it with a mouse connected to USB thanks to this adapter.

For some time with my mouse, I can no longer scroll through the pages of browsers like Firefox or Chrome.

Rather than scrolling the text from top to bottom or vice versa, it selects the text for me!

I can no longer also do a copy / paste in the web pages, it selects but without displaying "copy / paste" I reset my tablet but it doesn't change anything.

I have tried with a bluetooth mouse and have the same problem.

The funny thing is that when I take control of my tablet with my computer and with teamviewer I use my computer mouse! Well it works.

I can scroll web pages through my computer. An idea ? Thank you


问:
Friends phone keeps rebooting & other problems
A friends phone keeps rebooting, & when it does it resets their theme to the default theme. A couple times it has gotten stuck on the bootscreen requiring a battery pull to fix it. Just now after opening google photos which they have been using for a long time without any problems a popup suddenly appeared asking for permissions to access photos & wouldn't allow access with clicking allow. The phone is a Galaxy On5.</p>


问:
Dialogs of Apps don't show
I am running stock Android 7.1.1 on a Moto Z Play.

Recently I noticed that popup dialogs from apps running in the background or also in the foreground don't show automatically any more.

So, e.g. I have the apps Reminder with Alarm and Automate.

"Reminder with Alarm" has an option to show reminders as full-screen alarms with sound and Automate allows me to create widgets that, when pressed, should show a popup with a selection.

Both apps have the "Draw over other apps" permission enabled.

What happens instead of the popups being shown is that I only get a notification and when I press that notification the popup is shown.

I tried reinstalling these apps and also all other apps that reasonably could influence that behaviour. How can I further debug what is prohibiting those popups being shown?

Title: Dialogs of Apps don't show


问:
How to clear the Android file chooser history?
When using many different Android apps, a native file chooser is displayed to allow the user to select a file to process.

For example, in the well-regarded Privacy Browser web browser, visiting the VirusTotal website and then pressing the Choose file button on that site will invoke this file chooser GUI.

I noticed, on Samsung Android Nougat devices, many of the files listed in the Downloads folder were deleted over a year ago, but are still being presented as current options by the file chooser.

How can one clear the history of this native file chooser?

When clearing it, are there any undesirable side-effects?


问:
Google pay scanning credit card without camera permission
I have Google Pay installed on my phone. I have denied camera permission for every single app (except for "Settings" app which I am unable to deny Camera permission) on my phone.

When I try to add payment method on Google Pay app, Google Pay app is able to use my phone camera to scan credit card without camera permission. How is this possible?


问:
Why I can't remove directory using mv?
So I want to use bindfs that require the mounted directory to be empty. Then I'm trying to move WhatsApp (Internal storage) contents to external SD card

```<code>sdcard="/mnt/media_rw/6DE8-1BC6/"
mv /data/media/0/WhatsApp/* /data/media/0/WhatsApp/.* $sdcard/WhatsApp/
</code>```

But then mv outputting this

```<code>mv: can't remove '/data/media/0/WhatsApp/.Shared': Is a directory
mv: can't remove '/data/media/0/WhatsApp/.StickerThumbs': Is a directory
mv: can't remove '/data/media/0/WhatsApp/.Thumbs': Is a directory
mv: can't remove '/data/media/0/WhatsApp/.trash': Is a directory
mv: can't remove '/data/media/0/WhatsApp/Backups': Is a directory
mv: can't remove '/data/media/0/WhatsApp/Databases': Is a directory
mv: can't remove '/data/media/0/WhatsApp/Media': Is a directory
</code>```

What is happening here?

Maybe I should use this instead?

```<code>cp -r /data/media/0/WhatsApp/* $sdcard/WhatsApp/
cp -r /data/media/0/WhatsApp/.* $sdcard/WhatsApp/
rm -rf /data/media/0/WhatsApp/
</code>```

I'm running this using init.d

Title: Why I can't remove directory using mv?


问:
How to make phone vibrate in DnD (Do not Disturb) mode
Pretty simple question, I have a Lenovo P2 running Android 7. Instead of a phone being entirely quiet I would like it to vibrate for each call/sms/notification. The reason I need DnD to do this because I can schedule DnD to turn on and off whenever I need whereas I need to change silent/vibrate manually and I am prone to forgetting to do this when required. Seems like a pretty basic function so how would I do this? I've already been nearly everywhere in Settings.</p>


问:
Pair and Connect to a BLE device from inside an app behaves differently on Pixel 3a and 4a
After migrating from a Pixel 3a to a Pixel 4a (both running Android 11), re-connecting the GoPlus (a BLE accessory) in Pokémon GO now requires two more actions, first a notification "Pairing request" where I need to click "Pair & Connect" and then I need to press "Pair" on a popup in the middle of the screen "Pair with Pokémon GO Plus" (where I can decide if I want to share contacts and call history). Unfortunately, Niantic un-pairs the device after one hour, so when you want to reconnect, it is no longer paired in Android.

This is the exact same app running on the exact same version of Android, but on a device "one generation" newer. It seems strange that there would be a difference in how this works?

Is there some kind of permission I can grant Pokémon GO with "pm grant" from an ADB shell, or some other setting I can change, to just allow Pokémon GO-initiated pair and connects to BLE-accessories without user interaction?

("dumpsys package com.nianticlabs.pokemongo" shows that both devices already include android.permission.BLUETOOTH and android.permission.BLUETOOTH_ADMIN under "requested permissions").


问:
How can I change the partition (slot) that LineageOS Recovery targets?
If I boot into LinageOS Recovery, how can I tell what slot to target when I use adb sideload?


问:
Restore functionality to press home button to go to home screen
On my Samsung Galaxy A3 (2017) with Android 8, I used to be able to press the home button to directly go to the home screen.

Some configuration must have changed because now when I press the home button, it only activates the screen but doesn't take me to the home screen.

I need to press the home button to activate the screen and then swipe to go the home screen.

Anyone can help me restore the previous functionality?


问:
Can't install any apps that were previously saved on SD card
Recently my SD card stopped working and all apps that were saved to the SD card were obviously gone however the problem is while the phone, LG G6, still works and I'm able to install apps through Google play store I can't install any of the apps that were previously saved on that SD card. I've tried all the troubleshooting options, except resetting my phone, I don't want to lose what's left on my phone. The SD card was removed as soon as it became a problem, with it in the phone wouldn't work at all. Any suggestions?</p>


问:
TRRS compatibility, pinout. How does TRRS work?
After 16 hours of searching, I could not find comprehensive answers to the following questions:

What's the modern PC, Android and Apple pinout standard inside the 3.5mm TRRS female socket? Is it CTIA? Is it the same for all modern headphones/headsets/earphones with TRRS male plugs?

Or do some PC, Android and Apple device sockets and earphone plugs have a different pinout configuration?

Are there known incompatible plug/socket or M/F TRRS brands or products?

Are the Iphone headsets/earphones fully compatible with PC and Android? And vice versa?

What exactly happens when a headset TRRS plug is fully inserted into a socket? Does it automatically disconnect/disable the PC's speakers and microphone and connect/enable those of the headset?

Do external headsets/earphones with TRRS male plugs require new drivers to work properly with PCs? [never, sometimes, in most cases, often, always]


问:
Is there alternative to the Shred utility for Android?
There is such utility for Linux systems called shred. It writes files with random values several times and then also can write it with zeroes (to hide overwriting) and delete them so that files couldn't be restored.

Is there something trustful like this for Android (preferably not proprietary, but libre software)?


问:
How to easily access and browse 100GB of photos of the local network's NAS?
I don't use Google Photos, iCloud photos or any other (distant) cloud photos storage service.

All my 100 GB photos are stored on a hard drive connected on a NAS of my home router (of course, I have backup on other disks distant from home, etc. but that's another off-topic question...).

From my Android phone, how to easily browse the photos of my local network's NAS? With thumbnails, etc. like most photo browsers.

NB: my NAS is a DIY-NAS made with a Raspberry Pi, with a SMB Samba server, but I can easily install another server on this Raspberry Pi if needed.


问:
Is it safe to use an old mobile phone as modem / router for Wifi?
(Related to A phone as a home 4G modem/router?)

I was wondering if it is plausible and safe to keep an old phone charging all the time with a sim card in order to use it as a modem/router for Wifi.

I thought about this idea in order to have a low-cost Wifi for an alarm system. However, my mother is afraid the mobile phone, if left all day charging and running, might explode and start a fire. Is it possible this would happen?


问:
Getting "CANNOT LINK EXECUTABLE "inotifywait": library "libnotifytools.so" not found. " when tyring to run a script that uses the inotifywait binary
The script is here: https://github.com/Magisk-Modules-Repo/com.piyushgarg.rclone/blob/master/binary/syncd.sh

The code that I do not believe is working is this:

```<code>while true; do
    if [[ ! -e ${SYNC_PENDING} ]]; then
        ${HOME}/inotifywait "/storage/emulated/${PROFILE}/${SYNCDIR}" -e modify,create,moved_to,close_write -q >> /dev/null 2>&1 && touch ${SYNC_PENDING}
    fi
</code>```

When I execute the inotifywait binary as a standalone, I get this message:

CANNOT LINK EXECUTABLE "inotifywait": library "libnotifytools.so" not found.

Does this indicate that I am missing a library? How can I solve the issue?


问:
Flashing stockrom on a "Lenovo Tab4 8 Plus" in EDL Mode
I have tried to install TWRP and LineageOS on my "lenovo Tab4 8 Plus" and it didn't go well.
Now I have a broken device... no function, only connected with PC and its a Qualcomm Device in a Diagnosis Mode, or when I change the Driver its Qualcomm HS-USB Qloader 9008. How ever I change the driver or try all possible tools like MiFlash, QFil or Lenovo Rescue and Smart Assistant it doesn't all help and no flashing possible. Do guys have any Idea what could be wrong?

I thank you all.


问:
Device Not booting into Odin mode
I have an sm-g350h and when I try booting into Odin mode, It comes back to the normal mode.
I power off my phone and press home + volume down + power.
It boots into the stock os.</p>

Title: Device Not booting into Odin mode


问:
Error: No browser on device. What are you doing?
I am using Android 10. Samsung One UI 2.0.

I have installed: google-chrome, firefox in my android. But, when I click on external url on various apps, I get this error very often: No browser on device. What are you doing?. And on the other times I don't get this error.

How can I resolve this issue? Any suggestions?

@Robert


问:
How to record video from an Android phone directly to a cloud?
Perilous times...

I have to be able to record/stream a video through my Android, just like anyone does to its local storage, but instead, directly to a file somewhere on the cloud. What's most important to me is, if while recording a video the recording stops, there's a guarantee that's what's been recorded till the last seconds is already in the cloud, and is a playable file.

Realtime playable streaming is not essential. I want to make sure that while I'm recording a video I know that most of the video is already on the cloud, and the video extends while the Android phone is in the recording state.

What are the solutions to this?

Ideally, I want to be able to record to a shared directory on the google drive.


问:
My phone loses connection after sending 150-200 sms
I'm sms spamming to my business number (because of a campaign from my provider). But after sending 150-200 sms from my personal number to any number my phone loses connection. I called the service provider of my personal phone that I use to send sms. They said it shouldn't happen. I'm using an application for sms spamming and it is sending 1 sms per second. Samsung Galaxy S7 Edge 32GB Android 7.0 rooted.</p>


问:
Do I need a 'vbmeta' parititon to install GSI
Following the official GSI installation instructions from google, they say to run fastboot --disable-verification flash vbmeta vbmeta.img.

When I run that, I get the following message:

```<code>Rewriting vbmeta struct at offset: 0
Sending 'vbmeta' (4 KB)                            OKAY [  0.010s]
Writing 'vbmeta'                                   FAILED (remote: 'This partition doesn't exist')
fastboot: error: Command failed
</code>```

Does this mean dm-verity is not in use, and I can ignore this message? Do I need to make a partition? How do I do that?

Right now the GSI image is not booting for me.

I am flashing onto the Blackview BV5500 Pro, if it matters.


问:
Not booting into TWRP but instead stock recovery
I installed TWRP with ODIN and used adb reboot bootloader to go into Odin mode.
When I boot into recovery it goes to the stock recovery.
I used this command:- adb reboot recovery to go into recovery.
What went wrong?
I am using sm-g350h.


问:
WhatsApp photos getting corrupted after transferring/copying them from original location to external SD card
My WhatsApp media (photos and videos) gets corrupted when I move and copy them from their default location to the external SD card. The photos and videos behave properly for some time before becoming greyed out and unrecoverable. Moreover, it is very puzzling to me that this does not happen with all of the transferred/copied WhatsApp media. While majority of the files get corrupted and unusable, some of the files are good. I have no idea why this is happening. Could anyone shed more light on this issue? I have a Galaxy Grand Prime +.

EDIT 1:

This answer looked useful but it claims a faulty SD card to be the cause. Moreover, my issues seem to be occurring only with WhatsApp media.

EDIT 2:

I took photos from my camera and put them in my SD card and even those photos got corrupted. So the problem is not confined to WhatsApp.


问:
App to connect camera to gallery image when scanning QR code
Sorry for the not so catchy subject, I don't know how to phrase the question more precisely.

My requirement is: I use an app scanning QR codes directly via camera for a specific purpose. Sometimes it would be good to scan a QR code from an image stored in the gallery instead, but unlike many other apps this one is lacking the capability to browse the gallery for that purpose. The only way to get this working would be to emulate the camera in a way making the app think it is scanning a live image, but actually the user can first select the target image from the gallery.

Is there an app which can do this? I am using A Samsung Galaxy S7 with Android 8 stock firmware, no jailbreak.

Attention: This question is not asking for QR code reader apps in general, please read thoroughly.

Update: The app GalleryCam serves a similar purpose but only works for apps opening the camera with a button where it can hook into in order to display a pop-up menu. My target app is different, it does not work in connection with GalleryCam.


问:
Changing characters on bluetooth keyboard layout
I have Lenovo m10 with external bluetooth keyboard on which I use my language layout (Croatian). The problem is that it types some characters wrong. For example, it types some characters in capital when it shouldn't.

It looks like this when I type: priČekaj, or when I press Caps lock: PRIčEKAJ.
How can I fix this?

Sorry for bad English and thank you!!!


问:
How do I disable emergency call after three power button clicks on my Samsung S10?
I'm using a Samsung Galaxy S10 (on Android 10). One of the features that constantly irritates me is the accidental dialling of the emergency number. The system by-default looks for triple power button tap and automatically dials the emergency number (112). I read on XDA here that this is a feature specific to India and Indian SIMs, and I also bought this in India and used an Indian SIM for a short while during my stay there, but have since switched with no effect on the issue. Other regional users, per some threads of Samsung subreddit and Samsung forums, do not have this problem.

How do I change this behaviour? I'm looking to prevent emergency number dial on triple power button tap, and if possible, please provide a non-root based solution. I am willing to install Magisk, but only if there is a definite solution, and no alternative, as it adds another layer of complication. Thank you!


问:
Root Samsung Galaxy Tab A 8.0 (SM-T290)
Good morning. I have a Samsung Galaxy Tab A 8.0 a.k.a SM-T290 and I would be pleased if someone tell me how to get root access to it. Already have tried the method described in:

https://forum.xda-developers.com/galaxy-tab-a/how-to/how-to-root-tablet-a8-2019-t290-t4119487 https://forum.xda-developers.com/galaxy-tab-a/how-to/root-sm-t290-tab-8-0-2019-t3965624

And neither with the first method or the second was able to root my device. Thanks in advance.

OwnerDisplayName: Angel

Title: Root Samsung Galaxy Tab A 8.0 (SM-T290)


问:
Migrating my data to a new MIUI Android phone
I'm switching from a Xiaomi RedMi 3S phone (Android 6.0.1) to a MI 9 SE which I just got. None of the phones are rooted. I don't have a Google account, nor a "Xiaomi account" -  but like any phone user, I have my contacts, history of phone calls, SMS messages, and conversation on various apps, and more generally a bunch of app data.

I would like to transfer, or back-up-and-then-"restore", as much of this data as possible; with as little work as possible. Specifically, I'm hoping to be able to back up multiple things at once, or with one tool / method, rather than looking for app-specific solutions for each and every app. But - I don't want to involve Google or Xiaomi in any of this.

What would you suggest?

Note:

I'm perfectly willing to do command-line work or adapt a script if that helps.

If a reasonable solution requires rooting one or both of the phones, it's a viable answer, but please explain why that's necessary (as, obviously, I've refrained from doing that so far).


问:
How to copy data from Pixel 2 with a broken screen
I failed to connect to my Pixel 2 with a broken screen with adb from MacOS in the following way:

```<code>$ cd Downloads/platform-tools/
$ ./adb kill-server
$ ./adb start-server
* daemon not running; starting now at tcp:5037
* daemon started successfully
$ ./adb shell input text 5233
adb: no devices/emulators found
</code>```

I use a PIN to unlock my screen and USB debugging is not enabled. As soon as, I connect Pixel 2 to my Macbook the Android File Transfer icon only shows up but I can't connect.

Is there a way to copy files and settings from my phone to my laptop?

Thank you in advance.


问:
remount, turn off SElinux, all fails even though I am root
I have a device which is never hacked into before, mostly as nobody has it, it is a android tv box. I have temp root using the dirty cow exploit, and tried to remount system using the mount command. it says permission denied even tho I am root. so can anybody guide me to get system remounted with rw permissions?

heres some of the shell:

```<code>$ adb shell
shell@ganesa:/ $ /data/local/tmp/dcow /data/local/tmp/run-as /system/bin/run-a>
dcow /data/local/tmp/run-as /system/bin/run-as
warning: new file size (9804) and destination file size (17920) differ
[*] size 17920[*] mmap 0xb6d64000[*] currently 0xb6d64000=464c457f[*] using /proc/self/mem method[*] madvise = 0xb6d64000 17920[*] madvise = 0 17449[*] /proc/self/mem 10931200 610[*] exploited 0 0xb6d64000=464c457f
shell@ganesa:/ $ /system/bin/run-as
uid /system/bin/run-as 2000
uid 0
0 u:r:runas:s0
context 0 u:r:shell:s0
shell@ganesa:/ # Hehehe
/system/bin/sh: Hehehe: not found
127|shell@ganesa:/ # which touch
/system/bin/touch
shell@ganesa:/ # touch Hi.txt
touch: 'Hi.txt': Read-only file system
1|shell@ganesa:/ # mount -o rw,remount /system
mount: Permission denied
255|shell@ganesa:/ # ls -ladZ sys
sys/    system/
255|shell@ganesa:/ # ls -ladZ system
drwxr-xr-x root     root              u:object_r:system_file:s0 system
shell@ganesa:/ # setenforce 0
setenforce: Couldn't set enforcing status to '0': Permission denied
1|shell@ganesa:/ # sestatus
/system/bin/sh: sestatus: not found
127|shell@ganesa:/ # cat
^C
130|shell@ganesa:/ #
130|shell@ganesa:/ #
130|shell@ganesa:/ #
130|shell@ganesa:/ #
130|shell@ganesa:/ #
130|shell@ganesa:/ # cat /etc/selinux/config
/system/bin/sh: cat: /etc/selinux/config: No such file or directory
1|shell@ganesa:/ # cd etc
shell@ganesa:/etc # ls
18p
NOTICE.html.gz
audio_effects.conf
audio_policy.conf
bluetooth
clatd.conf
dhcpcd
event-log-tags
fallback_fonts.xml
fonts.xml
gps.conf
hosts
media_codecs.xml
media_codecs_google_audio.xml
media_codecs_google_tv.xml
media_codecs_google_video.xml
media_codecs_performance.xml
media_profiles.xml
mkshrc
permissions
ppp
preloaded-classes
recovery-resource.dat
security
sysconfig
system_fonts.xml
wifi
shell@ganesa:/etc # touch lol
touch: 'lol': Read-only file system
1|shell@ganesa:/etc # mount -o rw,remount /
mount: Permission denied
255|shell@ganesa:/etc # su mount -o rw,remount /
/system/bin/sh: su: not found
127|shell@ganesa:/etc # sudo mount -o rw,remount /
/system/bin/sh: sudo: not found
127|shell@ganesa:/etc #
127|shell@ganesa:/etc #
</code>```

I think it is SELinux, but even if I try to disable it I get permission denied. remember there is no access to recovery mode, nor bootloader nor usb adb. I have tried everything on the web

Thanks!


问:
Stuck in boot loop after "Fixing SELinus contexts"
So, let's say that I have already "Fixed SELinux Contexts", and I am now in a boot loop. How could I resolve this issue.

I am quite new to all of this, but I am eager to learn and fix my mistake.

TWRP-3.3.1-1210
Redmi Note 8 Pro
Havoc-OS-v2.9-20190914-phhgsi_arm64_ab


问:
Problem with chrome: cascading tab list not displayed, have to do it blindly
Samsung Galaxy S5 Mini

Android 6.0.1

Chrome 86.0.4240.198 (latest update at the moment)

Just yesterday Chrome's tabbing started misbehaving.

When pressing the button to look at the list of tabs, the display with a cascade of tabs doesn't show/refresh. Sometimes even the webpage shown before doesn't seem to disappear and the only indicator that you should be seeing tabs is the + over the homepage button. Occasionally the tabs will show but won't appear to scroll (though they do).

It appears to work as it should, but without displaying. Think putting a blindfold on when manipulating tabs. You can scroll through tabs, close tabs by swiping, switch to another tab, as if it had displayed them. When you do switch to any (random) tab, you take a blindfold off / the page and surroundings displays normally, no trace of any fault. Here's an example with 2 tabs:

Explanation: I see the 1st screenshot: 2nd tab, the main StackExchange page. I tap the "tabs" button on the right of the address bar. Then I see the 2nd screenshot: cascading tabs not displayed properly. I drag downwards but the display stays the same, as if frozen. Proof that it did scroll: the upper part of the screen should be displaying the first tab; I tap where the orange "Learn more" button appears to be and I open the 1st tab, BBC Weather page, as seen on the 3rd screenshot. I open tabs again, see the 4th screenshot: cascading tabs. I drag up and again, like frozen. But it did scroll invisibly again, because I tap at the bottom (Sunrise, Sunset) and end up seeing the 1st screenshot: 2nd tab.

I have restarted the phone a few times and uninstalled+reinstalled Chrome (uninstalled updates, reverting to the built-in version, which also wiped out the app's data), but to no avail. I haven't found anything on the internet about these symptoms either.


问:
How to fix - SD card works intermittently, rest of the time checks for errors
I bought a new 16GB micro SD card for my HTC Desire to replace the 4GB one it came with. I copied the contents of the old SD card to the new one and my phone loaded just fine.

Then, every few hours, the SD card would unmount saying the SD card was damaged. Turning the phone on and off a few times would result in SD card either saying "checking for errors" permanently or, occasionally, working just fine for a while.

I read a little about it and saw that perhaps I should format the card on the phone itself. So I did that (via ClockworkMod Recovery and then again in the OS itself) and recopied the files. It seemed to work for a while longer, but has now again started saying the SD card is damaged.

The SD card works fine when I put it into an adaptor and into my laptop.

Could the SD card really be damaged? Is there some other formatting I should try? Should I try making multiple partitions or something? Any ideas?

My phone runs CyanogenMod 7.2 (based on Android 2.3.7).


问:
How can I make an Android Smart TV stop listening on a specific port?
So, I used the app "Remote ADB Shell" on my Android phone to grant the WRITE_SECURE_SETTINGS permission to my AndroidTV (HiSense Smart ATV). In order to grant this permission I had to connect my phone to my TV on my network using RSA key authentication.

It has been a while since I did the procedure, however, I believe that I set the IP address of my TV (192.168.0.9) and a port number of my selection (5756). I got a prompt on my TV asking me to allow the RSA key, I pressed accept and was able to send the ADB command necessary.

However, now my TV still listens on port 5756. How can I stop the TV from listening on this port?


问:
PIN on lock screen not accepting touch input. Cannot switch on

PHONE / OS

Asus Max Pro M1 6GB variant running android oreo (8.1.0)

THE PROBLEM

My phone after reboot is not accepting touch input at PIN lock screen. Now, I cannot switch it on.

A PREVIOUS PROBLEM

It usually stops responding to touch randomly at any point which I used to resolve by :

Locking screen -> waiting for 30 - 40 seconds -> relocking screen. If the former did not work sometimes, I would reboot it 2 or 3 times as in the 1st, 2nd reboot the problem persisted and would go away by 3rd or 4th reboot. It's completely random as to how many reboots would it take for the touch input problem to go away.

WHAT I TRIED

I tried to unlock the bootloader from fastboot to flash a TWRP image intending to backup my data. But unfortunately, some problem occurs saying Write to device failed / Too many links / Unknown error / Command failed, etc, etc. I have a Ryzen 3 processor, and I do know the usb 3.0 problem associated with it. I also tried changing usb cable.

WHAT I WANT

I want to access my phone without losing data/installed apps.

In search of some community expertise. Thanks in advance.


问:
How to install fastboot drivers?
I have a cheap clone android (benss b3) that I managed to connect to win 7 by editing the .inf file in usb drivers. Now I want to load different ROMs via fastboot. However, when I boot to fastboot mode (?, power on with back + power button pressed), I get a new device in windows  device manager. I can't get the usb drivers working and no devices appear with fastboot.

How can I get the fastboot to detect my device?

Title: How to install fastboot drivers?


问:
How can I answer phone calls with a real (like power) button?
I can close phone calls with that button by default, but for me it would be even more useful to be able to answer a phone call the same way.

Is there a setting or an application that would enable that?

The main idea is to be able to answer a call without interacting with the touch-screen, but only with the real buttons.

This is a Xiaomi a2 phone, not rooted.


问:
cannot disable notification sound when galaxy s10+ starts to charge
Every time I place the S10+ in the wireless charger, or remove it from the charger, the phone barks at me. I cannot locate a place to disable this. If I turn the sound for Notifications off, the sound disappears, but I do not want to disable all Notifications, just this one.</p>


问:
Connect an Android to an Ad Hoc network?
I'm working with a homemade security system made of Raspberry Pis that are connected via an Ad Hoc network. I want to see if I could connect my Android to that network and really haven't found any recent examples. A lot of previous posts were saying that Android doesn't support ad hoc networks and I don't know if that's still true.</p>


问:
Turn on / off Conversation threads
I have just purchased a Samsung A51 / S51 and use Yahoo Mail. Emails now are placed in conversation threads which makes viewing confused. Apparently you can toggle this option on or off either via Settings directly or via Profile.  However this option does not seem to show up in my Settings and accessing my Profile is not so simple and / or seems not to make any difference. It is almost as if someone has gone to great lengths to make this simple operation complicated. Can anyone shed any light?</p>

Title: Turn on / off Conversation threads


问:
Top part of my touchscreen is not working
Moto C plus | Android 7 | Rooted

Suddenly top part doesn't work. In the test, if I keep on moving in the white area, evetually, one random one will turn green. Also a few minutes before, it was only one white row. I didn't drop the phone or get water in it when this started.

Any idea what it could be and how I can fix it?


问:
I installed a large app & it won't install but takes my storage! now I have full storage but haven't the app?
I'll be grateful if someone help me! I installed a large app (1.25 G a game) but it won't install because of my low storage it won't install said app not installing just like this; but take my storage! now I have full storage but haven't the app I already cleared the game app and restart my phone but didn't worked...
I use ES filemanager & always check my storages; before installing that app my storage 79% but now 92% I already searched my internal-storage for any tail of the game but it was nothing.
Btw I have to say I did something like this before and it fixed by itself I think after a little time Im not sure  already... ➡My own files pictures, videos ets CAN'T BE 92% its about 600mbs my interal-storage is shown 10.50G & except this I have 2.65Gb installed apps
I have sd card 64G too.
!!!???</p>


问:
Photo recovery but for a renamed photo with .BAK extension
Seems like most extension based file recovery apps on playstore only supports for rooted phone. Most photo recovery works fine but the file I deleted was renamed with a .bak extension. So I wonder if there is a way to recover extension based files even if the device not rooted?

Or would the photo recovery apps detect the .bak file extension as image and still recover it as photo?


问:
HTC u11 didn't any reaction to press button ony to see the computer the com port and phone flash
I'm bought the HTC u11 is the dead OS. The other owner did something with the system. The phone is see the computer the com port and the phone flashing Red lights. I'm try to charging battery but didn't solve it.The phone only start to edl mode.

Please help with any ideas.


问:
Disabling "Notification Bubbles" in Dev Options is Irreversible
I have a Samsung Galaxy S20FE, running Android 10 and One UI 2.5. After enabling "Notification Bubbles" in the developer settings I decided that it wasn't to my taste and toggled it back off.

However, even though the switch says that the setting is off, apps are still displaying notification bubbles - it seems as though the change was permanent. I have tried a restart, clearing the cache, and deleting the setting as per this article. It appears that no matter what I do, the notification bubbles remain.

I am comfortable with using ADB, and would be exceptionally grateful for any help here.


问:
Is it possible to change interface language to Hebrew?
Is it possible to change the GUI language to Hebrew in an Amazon Fire 7/8/10 tablet? To clarify - not the input (keyboard) language, but the interface itself.

[I am assuming Fire OS questions fit in this forum. If you think there is a better place to ask, please let me know]


问:
How can I add fonts to my Android phone to view characters that are appearing as X boxes?
I am frustrated with the apparent inability to figure out which charset or language I need to install to view characters that appear as "X"s on my Samsung GS6 phone.  I am running Android 7.0.  Non-rooted phone.

For example:  On Twitter, when I use the app on my phone, someone's name appears entirely in Xs.  I assumed it was a multichar language like Korean or Japanese (both of which I have installed) but it turns out it's just bold face Roman.  (Which I see when I pull up the user via Twitter's web interface on my computer.)

Other times, I am sure it's an emoticon or such that someone sends that doesn't show properly.

How can I know which languages or icon sets to install so I can view these?

(Note, my computer, a Lubuntu machine, usually displays things fine.  So this is a phone question.)

Thank you so much for helping with this.  Driving me nuts.

OwnerDisplayName: confused


问:
Android 10 custom dialer killed by the system
I have an oukitel wp5 running android 10. I want to replace the stock call manager (dialer). I have tried several, including the one I have already used on my android 6 phone, but none seems to work.
When started, they work for a while, but after some idle time they seem to be killed by the system. After that no app is there to react to the incoming call. There is only ringing, but no notification about the caller, nothing. Until the app is manually started.
Of course, they are set as default call manager, they get every permission they are asking for. I have checked that they are also excluded from battery optimisation.
Where to check, what to set to kepp it in the background?</p>


问:
Gmail notification remains on lock screen after email has been read/deleted on another device
I recently switch from iOS to Android (Google Pixel 4XL). One problem that I can't figure out:

When I receive an email, I get a notification on my device's lock screen. Good.

If I read (and/or delete) said email on another device, the above notification remains (until I unlock my phone)

Is this just a deficiency in Android vs iOS, or is something not working correctly?

Thank you!


问:
Strange touchscreen problems on Sony Xperia Z1 Compact
I'm having a strange touchscreen issue with an Xperia Z1 Compact. It's generally working fine with no obvious physical damage. Awhile back it was triggering random touch events. I eventually peeled off the factory-installed screen protection film and that problem went away - but there is a region of the screen that still has very strange problems: most but not all software buttons work - so typing works fine, but some buttons in the same region can't be pressed. For example, after I did a full OS-reflash, there was a welcome screen to SMS/Messaging which I couldn't dismiss. I thought perhaps messaging was crashing, but I later plugged in a mouse and was able to click on the button. Now messaging works fine. It was a large button in the same region of the screen as the keyboard (which works fine) so I don't understand why I couldn't press it.

Similarly, when I swipe, if I cross this region it is often interpreted as a button press - I suspect the swipe is "noisy" and is getting interpreted as button presses. But, as a very weird example, if I swipe left and right on the home screen in this region, the background will move but not the contents (app-icons/widgets). Normally both drag together - which is also the case if I use a mouse (this is possibly correct behavior - to alter the background region, although still odd that the mouse behaves differently). It's almost as if there are 2 different aspects to the touch-interface and one is damaged in this region.

The only setting I can find is under language inputs I can adjust pointer speed but this doesn't seem to have much effect.

Anyway, will keep using the phone for now with some frustrations but just curious if anyone has any explanation, similar problems, and possible solutions. Thanks.


问:
Some apps only work on wifi
I have a few apps on my phone that for some reason only work on wifi. It is an email client and a public transportation app.
I tried reinstalling the apps, clear cache and data, clear cache, and data on Google Play Services, resetting network settings but nothing seems to work. Is there any way I can make them work on mobile data as well?

EDIT
As suggested, I'm including a few more details. The affected apps are Microsoft Outlook and InfoTB.
I am Romanian, my carrier is Vodafone, my phone is a Samsung Galaxy 10e running on Android 10.

Title: Some apps only work on wifi


问:
Samsung Galaxy unlocking software
This is a followup question for this post and that one. Currently I'm trying iMyFone software to remove the screen lock for my cousin's Samsung Galaxy A8. The problem is Galaxy A8 is not among the options available:

Sometimes, devices are categorized in compatible families. I wonder if any of the listed devices above is compatible enough with Galaxy A8. Which device I can possibly choose to safely try to unlock Galaxy A8?

UPDATE

Downloaded and installed Dr.Fone, but seems like it has the same device list.

Title: Samsung Galaxy unlocking software


问:
Use an Android tablet for drawing on PC while seeing only a zoomed in portion of the entire screen
I'm looking for a way to utilize my 10" Samsung tablet as a drawing display tablet for use with arbitrary Windows 10 apps (like Photoshop, any pixel art tools, basically without hard limitations) with support for only seeing a zoomed in fragment of the screen, while the screen still shows everything without cropping/reducing the resolution only to what the tablet can show.

Because my desktop monitor's resolution is 3840x2160px at 48" and the tablet is 1920x1200px at 10", I would like to be able to match up the scale and visible region on the tablet to that on the monitor, with a pinch-to-zoom gesture on the fly, so I can only work on a part of the screen at a time. Seeing the contents of the entire monitor on the tablet or having to lower monitor resolution to match the tablet's is not very usable for drawing. With Teamviewer, I can't figure out how to use it to draw at all - it translates all touches into drag motions for Photoshop, and it only shows the entire visible screen, without the ability to zoom in on a small part.

I don't have any special touch pens for the Samsung tablet, and it this model does not have any special pen support. So I guess I'm looking to translate all touch as mouse clicks to PC.

Is there a modern piece of software for Windows 10 and/or an Android app to make this work?


问:
How do I root a phone without losing any data?
I don't care if my phone trips the knox counter, I couldn't care any less if samsung knows I tried to root my phone but I'm tired of looking at videos on YouTube that say "This method works without any app and data loss", I used CFAutoroot and that erased my device. You all know how to root a phone teach me, I want to be able to keep my apps and data not lose any apps while rooting my phone. I was able to root only one phone with Android KitKat, without losing any apps except for Google Chrome, I want to root a phone with no app loss.</p>


问:
Clone Device To Multiple Devices
I have to set up and configure a thousand devices that use Android Go 8.1.

Every device is the same brand and same model.

I have to install two third-party APKs that get thrown a warning by Play Protect. I also have to configure certain settings, Pass Code, disabling background mobile data for certain apps....Notification settings and so forth. Everything on every phone needs to be precisely the same, down to the pass code, and down to the GMail address the device is logged in with.

I have no experience in Rooting. I need some advice on how I would achieve this in the fastest way possible. The device is a generic Hisense U605 with 1GB RAM and 8GB internal storage.

Title: Clone Device To Multiple Devices


问:
What is the support timeline for Google Play System Updates (GPSU) from Project Mainline?
Since Android 9 more and more core components can be updated by Google by the Google Play System Updates (GPSU) that come from Project Mainline (https://www.xda-developers.com/android-project-mainline-modules-explanation/)

Do you know how long Google will provides these updates? I hope that there will be updates even after the phone manufactures have stopped providing the "normal" android (security) updates. If this is the case the updates of the phone manufactures would be less important since you get important updates directly from Google.


问:
Stylo6 Android 10 no cast
I see no generic option to cast in either my pull down tray or in settings > connected devices, as no screen share available.
Is my only option to download an app from Google play?</p>

Title: Stylo6 Android 10 no cast


问:
How to prevent Samsung Pay from launching on Samsung Galaxy S7 Edge without adding an account and without rooting the phone?
I have a Samsung Galaxy S7 Edge phone. Recently, due to nothing that I've done to it (maybe an OS update?), it now has "bar" at the bottom that acts upon an upward swipe operation that brings up the Samsung Pay app. I never use Samsung Pay, and never want to use it, so I want that to stop being used as the upward swipe gesture.  I've searched on the web and everything leads to having to go into Settings under Samsung Pay, but each time I do, it puts up a login wall whereby I have to sign into a Samsung account. I do not want to have to add an account to disable the swipe gesture, as I certainly don't want to allow Samsung to mine my email address.

Is there anyway to just disable it completely, or somehow prevent the upward swipe to launch Samsung Pay, and just do what it used to do before "they" made this Samsung Pay be associated with that upward swipe gesture, and all without rooting the phone?

Current half-baked solution: I was able to go into the phones settings, under Apps, and select Samsung Pay, and then click Force Stop. That caused it to disappear.  Is that the way? Restarting the phone did not cause the bar at the bottom to show up again, so this might be the solution, but not certain it will be if a new system update occurs and re-enables the Samsung Pay again.


问:
Will installing the stock screen recording app from a different model still record internal audio?
My LGV30 phone running on Android 9 has a built-in screen recorder, but it displays an on-screen timer that can't be removed. On newer models (LGV40, LGV50) running on Android 10/11 this timer can be toggled off. I know apps downloaded from the Google Playstore can't record internal sound on Android 9. Before I download apk files from untrusted sources, I wanted to verify if installing the new version will still record internal audio or would it require root permission?</p>


问:
Fasboot Devices not getting attached XIAOMI MI A3
I have the Xiaomi Mi A3 and I'm currently on both phone and PC latest stock update. I am using Windows 10 20H2 and I have tried everything – but still don't get it.

I tried another Mi A3 and it got attached normally. I've tried installing all kind of drivers and different ports, nothing. When suddenly it worked and I installed the stock ROM – but because the stock ROM is kinda laggy and ugly I want to change it. But I can't because I am also on stock recovery and I can't install another recovery because my device isn't recognized in fastboot mode.

My device is recognized in adb mode and in edl mode as well, only not in fastboot.


问:
One keyboard two languages using Gboard
Consider this, I want to add two languages on one keyboard with Gboard: English and French for QWERTY (English) keyboard. I open the settings but can't add language to the existing keyboard.

(only applicable if multi-languages are enabled)

So to activate it I have to add another keyboard (English)

Now I have French support on the English keyboard and English support on the French keyboard. But I have two keyboards.

What even is the point of this? And is there a way so that I can use only one keyboard (layout) with two languages?

Title: One keyboard two languages using Gboard


问:
Show SIM Card contacts only
Does anyone know if Android 8 has an option on the Contacts app to show SIM Card contacts only? I'm gonna buy a new phone soon, and I almost forgot about this part. So I wanted to be sure before I decide to buy anything.

The explanation for what you're probably gonna ask is that I don't want the contacts in the phone itself, because if it'll be like my first smartphone, if I had the contacts on it, I'd have killed myself infinite times (the same times I formatted it). Having them on my account is out of question. No mixing contacts. What a mess. Plus having all my Gmail contacts on the Contacts app on which I want ONLY phone contacts. Nope.

An idea a person told me hours ago was to create an account specifically for that. Actually never had thought on that one. Though, I'd still like to have the contacts on my SIM card and see them through it. No copying to the phone, or I'll forget to copy some or create some in the phone without realizing and then when I format it hoping everything is on the SIM, I've just lost some new contacts. No.... So either showing all SIM contacts, or a specific Google account only for phone contacts (which is a bit stupid, but it's the best solution I've got without being able to see SIM contacts directly).

In any case. Does anyone know if the option exists on Android 8? (the phone I'm wanting comes with Oreo) At most I know it exists at least up to Lollipop 5.1, which is the one I have now - OnePlus X, so basically almost AOSP ROM with Google original apps, so Google didn't remove the feature on 5.1. Next I'm gonna buy is a Blackview, which I think it's basically AOSP too, so Samsung phones I'm not sure if they count on this because Samsung mods infinitely their phones.

PS: Because of what I just said, if you answer, please say your phone brand (model too?). Preferably would be phones with ROMs very near to AOSP. I got to know hours ago that Samsung doesn't have the option on Android 9 and 10, but Huawei does on 9 (no idea about other brands/versions).

Thanks in advance!

How I do it in my current phone, as a reference, is (resolution reduced to take less space here):

Title: Show SIM Card contacts only


问:
Gtalk audio notifications with the application in focus
I have recently upgraded my Orange UK Samsung i9100p to ICS and have been having trouble with audio notifications for new gtalk messages. It seems it notifies you while you are in conversation with someone, obviously I don't need notifying when I can see the text appearing in front of me, so while I'm talking I will get constant unnecessary pings when I receive a reply. I don't remember this being the case for the gingerbread version, has anyone noticed this change? And found a method or app to sort out the notifications?</p>


问:
NFC: Spotify URIs open app, not specified resource
My goal is to program NFC tags in such a way, that Spotify starts playing a specific track/album/playlist.

But after writing a Spotify URI (e.g. spotify:track:6rqhFgbbKwnb9MLmUQDhG6) to my tag, it only opens the app and disregards the resource.

The problem seems to be the way Android handles the tag, because the URI works without any problems when I call it from another app.

A related problem is the way URLs are handled: When I open a Spotify URL like https://open.spotify.com/track/6rqhFgbbKwnb9MLmUQDhG6 from another app, it directly launches Spotify, whereas it would unsuccessfully try to open it with a browser after touching the tag.

It seems like Android only processes the scheme of the URI. Is this correct? If so, is there something that can be done to circumvent this? Why would that be the case?


问:
Copy Text from SMS pulls wrong text
On my ICS 4.0.4 Nexus S when I go to a message that I've just sent to a person and select it, then 'Copy Text' and somewhere else 'Paste' the text it seems to pull the 4th/5th message above the one I've selected. However it only does this behaviour 2 out of every 3 times or so, I can't reproduce it at will. Is there a fix for this and/or is it a known issue?</p>

Title: Copy Text from SMS pulls wrong text


问:
Cant' mount loop device
After I format the loop.img (formatted as ext4) I can mount it no problem.

But when I'm trying to remount loop.img from external sdcard to /data/data/com.termux/home/ubuntu20-fs/
always throw invalid argument , I already tried using busybox too.

```<code>mount -t ext4 -o loop /dev/block/loop3 /data/data/com.termux/files/home/ubuntu20-fs/
mount: '/dev/block/loop3'->'/data/data/com.termux/files/home/ubuntu20-fs/': Invalid argument
</code>```

Does anyone know what happened?

image

dmesg | grep avc

Strace of busybox mount with "-t" argument

losetup:

```<code>NAME  SIZELIMIT  OFFSET  AUTOCLEAR  RO  BACK-FILE  DIO  LOG-SEC
...
/dev/block/loop3  0  0  0  0  /mnt/media_rw/6DE8-1BC6/loop.img  0  512
</code>```

blkid | grep loop:

```<code>/dev/block/loop3: UUID="0746ba9e-fc09-4a32-8b5f-49aee9096cf7" BLOCK_SIZE="4096" TYPE="ext4"
</code>```

Title: Cant' mount loop device


问:
Read data from internal flash of a broken phone
I have a broken phone which doesn't even switch on. I would like to get all the data from the phone, is there a way to remove flash memory from motherboard and read all the data?

My phone was an Asus ZenFone Max M1 Pro, no root privileges, Android 8.0 I think.


问:
Is there a way to upgrade the OS on an old phone?
I have an old GT-S6310N (aka Samsung Galaxy Young). I don't want to buy a new phone, because they are kinda useless for me. I use my computers for everything I do. I use my phone only a few times a year to navigate with GPS or to call somebody, but even navigation seems to be broken now. A friend asked me to develop a project, which involves a small Android service polling from the background, so I need a phone to test it while developing. She has Android 8, so I thought maybe it is possible to upgrade my phone to that version too. Last time I tried to upgrade the OS was many years ago and as far as I remember even Android 5 was not allowed. I am curious about the whys and if there is a solution to this? Rooting and maybe bricking is something I can risk. I just don't understand that how are these new Android versions not compatible with old phones, when Linux is usually backwards compatible and Android is Linux based... It just depends on the drivers and resources right?</p>


问:
Open port to all interfaces
I have an old machine with no built-in wifi adapter. I'm using a spare android device to connect this machine to my wifi home network via usb tethering. I'd like to ssh into this machine. The machine's ip address is behind the usb-tethering subnet.

What I tried:

```<code>adb reverse tcp:2222 tcp:22
</code>```

I'm able to ssh from an app running inside the android device (e.g. connectbot) into the machine. But when I try to connect from another device on the home network:

```<code>ssh -p2222 <android-device-ip-address>
</code>```

I get connection refused. nmap reports that all ports in the android device are closed.

How can I open port 2222 to accept connections from outside the android device?

Title: Open port to all interfaces


问:
AnySoftKeyboard: How do I reorder/remove the keys from the long-press option? I am using Alternate (no mic) layout
My ASK keyboard currently looks like this:

There are two parts to this question:

How do I control (easily) what characters show up when I long-press on a key?

How do I re-arrange those options?

Language pack: English QWERTY Latin Keyboard

Layout: Alternate (no mic)


问:
SAMSUNG A11 hang on logo after flash
Hy to every one. after flashing Samsung A11 SM-A115F with Android Q10 ,Samsung Device struck at logo.
i have try to flash different firmware
first download file from Easy Firmware
and after that try to flash file from SamFirm
need help</p>

Title: SAMSUNG A11 hang on logo after flash


问:
Android 10 - recording app network usage
On Android 9 or less, I use a shell script which continuously reads from /proc/net/xt_qtaguid/stats and greps by app UID to get app network usage. However, this method is deprecated on android 10: https://source.android.com/devices/tech/datausage/kernel-overview

Is there any other way I can get the same information? Or, how can I use the new eBPF network traffic tool to get this information?


问:
How via "a script" to move files (pics and videos from Camera) from phone to SD card?
A user may have a slow SD card. So taking pictures and videos on internal storage solves the problem nicely. It has 100GB. However, it can get big. And the SD card is 256GB. So the user wants to free up space and (once a week or month) move pics and videos to SD card. That is what is desired. Please advice.

In windows, I would create a .bat file and put to desktop and execute when I need it.

something like

```<code>copy c:/fast_storage/DCIM/Camera/*.* c:/large_storage/DCIM
</code>```

How can I put a similar script on my Android home screen?  (not a rooted phone). It can be inside some program that supports such simple script. (but not tasker or some too fancy solution that drains battery and runs all the time). The copy action is on demand (not scheduled).

It seems silly to do the steps repeatedly manually and not use a script approach. Can android do this?


问:
a lot of heavy .txt files in my android. is it safe to delete them to free up memory?
There are lots of text documents in my android phone with over 1 mb size. they are typically named with time stamp like "20200419_11". is it safe to delete them? will it enhance my storage space</p>


问:
Is app size larger in older Android versions?
I currently have Android 6.0 Marshmallow. If I install a newer Android version, will the app take less storage on my phone? In other words, does an app carry excess luggage to get it working on older phones?</p>