问:
Media recovery and rooting my phone
I have an LG G6 (LG-H870) with android oreo 8.0.0, kernel version 3.18.71

I want to root in mainly to recover a couple videos I've deleted.

If there is a way to recover the videos without root that would be great, if not then I need some help rooting my device because I've never done it before.

The videos I've deleted were locked and I have "permanantly deleted" them as they don't go in the trash.

I've found this : https://forum.xda-developers.com/lg-g6/development/tool-tool-one-driversunlocktwrpfactory-t3674088

Also, I know that rooting my phone voids my warranty so I was wondering if there was a way to unroot my phone in order to get back my warranty after I'm done recovering my videos/photos?

Basically...

Is there a way to recover deleted videos/images without rooting my device and if not then how do I safely root it?

Title: Media recovery and rooting my phone


问:
Is there a way to set a global http/https proxy on Android 8 either with root or no root?
I am interested in setting up a global proxy on a rooted android 8.1.0 device. Is there a way to configure a system-wide proxy?

I have already tried a couple of apps to achieve this but have not had success.

shadowsocks - can't remove encryption and password setting. The password can be set blank but still does not seem to work as a plain proxy setup.

Proxy manager - doesn't allow you to set proxy host/ports manually. Only seems to support preset proxies

Drony - can't click on settings tab. I can only press turn on/off

ProxyDroid - keeps crashing. Does not run.

postern - insists on having an encryption method and user login credentials.

ContentLicense: CC BY-SA 4.0


问:
Android screen is dark, no USB debugging is enabled, how can I recover contacts?
My phone screen is not showing anything, although the touch detector works perfectly. I hear the sound of the notifications and call and I can answer them but it shows nothing.

What are my options for recovering my log and contacts, I read that I need to root the phone since USB debugging is not enabled for me, is it possible to pull the database files from the phone's storage and extract the data from them, or are they encrypted ?

PS: (my phone is Samsung J2)


问:
How to automatically trigger missed Tasker profiles after power outage?
I have a phone running Android 8(Non rooted) and tasker with some tasks scheduled to run at specific time.

How can I make tasks which hadn't run because the phone was out of power, to run when power comes back.

What I`m searching for basically, is Anacron for Tasker


问:
What is cause of internet malfunction?
When phone is brand new and updated to latest firmware and network is also good then what possible causes can be of internet malfunction?

I'm using Asus Zenfone Max Pro M2
Running on stable pie.

Title: What is cause of internet malfunction?


问:
Why I am only getting 8gb storage when I was said that my phone contains 16gb storage?
I recently bought Oppo A3s smartphone with 2gb RAM and 16gb ROM but I am only getting 8gb usable storage from which Android is using 2 gb. What should I do now?</p>


问:
Check for install then uninstall with Tasker
I'm new to tasker, just got it today.

I want to set up a profile that looks at the apps I am installing and if it is on some block-list, uninstalls it.
I've seen this answer (to a related question):
Get new installed app name with Tasker

But I am still not quite getting it.


问:
How to open .jpg attachments in Whatsapp on android?
When images are sent as .jpg attachment in WhatsApp on android, they are not displayed and I get the error

"you may not have a proper app for viewing this content"

even though I can open .jpg files with my default gallery viewer app.

I noticed however that under WhatsApp>Media>WhatsApp Documents it is stored as 12345.jpg.enc and wonder if that is the reason why (encryption?).

Any way to make the gallery viewer the default app for .enc?

OwnerDisplayName: Markus


问:
not sure how to breathe life into mate 8 64gb dual sim variant
I'm at a loss here, i have nougat on my mate mate 8 but i completely forgot that you had to root nougat in a particular way. Anyway, i don't have access to erecovery, power+volUPvolDown doesn't work and i can't get access to fastboot. The only thing i do get is power to the screen and my 'your phone is unlocked and can't be trusted blah blah' message.

I need to flash a recovery.img, system.img and any other relevant img. How can i do this with the phone in this state?


问:
Screen goes black during call
Often, when I try make a call or use the phone app on my phone, the screen goes black.  I have a Pixel 1 with Android version 9.  This is a problem because I can't see or use the numbers or buttons on the screen!  What is the fix?</p>

Title: Screen goes black during call


问:
Android storage errors, cannot write files, app keeps stopping?
My Android phone runs 8.1, model ASUS Zenfone Live V. I have 15.06 GB/16 of internal storage and roughly 11/128 on an microSD card. (I checked with ASUS when I bought it, it is the max storage and speed the phone could support.)

Despite indicating more free space available, the phone has exhibited a number of weird behaviors lately.

-Camera refused to take pictures, stating Operation failed. Insert a storage card and try again. The microSD was never removed from device.

Google Drive refused to download files to my device. Said it could not write to device.

-A few weeks ago a significant number of apps mysteriously stopped functioning and would crash immediately on open. After painstakingly wiping cache and data from Google Play, rebooting and reinstalling I got most of them back. A few still refused to install. One app I tried to install since then has "installed" successfully but has now begun exhibiting the same error message. App (DiskUsage) keeps stopping whenever you try to open it, and had had no luck opening so far. I am guessing it has a problem being unable to read or write files that is preventing it from opening.

All things point to a storage problem. Advice?


问:
App data backup on android devices to google cloud
I have a question about the backup into google cloud on android devices. When you do a backup into google cloud also app data from apps which supports that feature will be uploaded too. But I think there are some conditions WHEN app data of a specific app will be uploaded. E. g. on my android device (Samsung Galaxy Note 9 on Android 8.1) there are some apps which won't upload app data and some apps which will upload data (even though they support it). It doesn't matter if the app data has changed, it won't upload to google cloud. So is there a way to start app data backup manually? Because app data backup has worked before. I can see this because of the "last updated" timestamp.

Thanks in advance


问:
Can't find call log from adb shell
Phone is a Samsung Galaxy E5 SM-E500m (lte, dual chip, codename e5lte). Android version 5.1.1 "lollipop" Stock ROM.

I pulled the database file from /data/data/com.android.providers.contacts/databases/contacts2.db and tried to inspect it with both the DB Browser for SQLite and also the sqlite3 command-line tool.

The file is 1.7MiB in size. It has 42 tables.

From my research efforts, I was hoping to be able to see the call log in the calls table; but it is empty (0 records).

Other tables in this db file all appear to have data.

I also checked the file over /data/data/com.android.providers.telephony/databases/telephony.db but it does not appear to contain call logs (only 4 tables: android_metadata, carriers, siminfo and sqlite_sequence).

Where else can I potentially find the call logs for this device?

The call log is shown correctly in the Phone app.

Thank you.

Title: Can't find call log from adb shell


问:
How can I obtain root access inside Daydream shell?
I am trying to get familiarize with the Daydream VR adb shell command, but I can't get to find for the right documentation. How can I obtain root privileges once I have done:

adb shell

I used the following command to see if root or sudo was an actual command

ls /system/bin

OwnerDisplayName: Vlad Ezikon


问:
What happens when Android mounts a microsd card?
I've got a 256 GB microsd card which only works with my phone if its file system is FAT32. The issue I have with this, is that FAT32 only supports files up to 4 GiB, which is a bit low by today's standards. I am able to successfully mount an exFAT partition using a FUSE driver, which I found here: https://forum.xda-developers.com/showpost.php?p=79685842&postcount=9
I did not install that zip; instead, I simply extracted the mount.exfat binary and called it from a superuser shell.
The actual issue I'm having, is that if I mount anything using that method, the Android OS doesn't "register" that as a microsd card.
So apps can read and write data to the mountpoint as if it was a plain directory, but it is not recognized as an actual external storage device. I'm trying to figure out what exactly does Android do when you tap the "Mount SD card" entry in Storage settings, and how can that be replicated outside of the Settings app.

If a FAT32 card is mounted automatically by Android, here's what the mount points look like:

```<code>$ mount | grep 5D03
/dev/block/vold/public:179,65 on /mnt/media_rw/5D03-6C2D type vfat (rw,dirsync,nosuid,nodev,noexec,noatime,uid=1023,gid=1023,fmask=0007,dmask=0007,allow_utime=0020,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
/mnt/media_rw/5D03-6C2D on /mnt/runtime/default/5D03-6C2D type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,mask=6)
/mnt/media_rw/5D03-6C2D on /storage/5D03-6C2D type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,mask=6)
/mnt/media_rw/5D03-6C2D on /mnt/runtime/read/5D03-6C2D type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,mask=18)
/mnt/media_rw/5D03-6C2D on /mnt/runtime/write/5D03-6C2D type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,mask=18)
</code>```

Forgetting about exFAT or other file systems for a moment, I first tried to replicate that using the same FAT32 partition which was mountable natively by Android. I unmounted the SD card from settings, which resulted in the above command not outputting anything anymore, and proceeded to mount the partition in much the same way as described by the mount output seen above.
From a su -mm shell, I first created the necessary mount points with mkdir, then replicated all the entries with mount, like mount -o rw -o nosuid -o nodev [...] -t vfat /dev/block/vold/public:179,65 /mnt/media_rw/5D03-6C2D.
When finished, the output from mount | grep 5D03 was almost exactly the same as if it was the Android OS doing the mounting (checked with diff: the single difference was the lack of the dirsync option, as mount complained about not recognizing that option, all other lines were exactly the same).
But that still did not make the Android OS acknowledge that a SD card was indeed mounted. From this, I gather that Android does some extra step when mounting an SD card.
For example, if the card is mounted natively by Android, file manager apps will show the SD card's capacity and free space, and will allow to easily browse its contents. But if I mounted the very same SD card manually, as described above, the same file manager would only offer to browse internal storage. The SD card could still be accessed if I navigated to the mount point directory (/mnt/media_rw/5D03-6C2D) so it was properly mounted and working, just not recognized by Android.

So I guess this lengthy question really boils down to this simple one: How can one mount devices in Android OS and have the mount points recognized as real external storage devices?


问:
How to launch intent with app shortcut id?
I want to run the NordVPN app by using am start automatically connects to vpn, on my home screen I have a working shortcut. The shortcut code is:

Intent;action=android.intent.action.MAIN;category=com.miui.home.launcher.DEEP_SHORTCUT;launchFlags=0x10200000;package=com.nordvpn.android;component=com.nordvpn.android/.MainActivity;S.shortcut_id=shortcut-germany-515;end

I am trying to the same via adb:

am start -a android.intent.action.MAIN -c com.miui.home.launcher.DEEP_SHORTCUT -n com.nordvpn.android/.MainActivity -e S.shortcut_id shortcut-germany-515

But that does not work, apps start but don't connect to vpn


问:
zooming in and out using mouse scroll wheel
I searched desperately for a way to do that but in vain. so far it looks like the only way for zooming using mouse in android is clicking twice the left button and dragging up or down, which is very awkward and frustrating and out of common sense. I tried to find a key mapper on Googleplay but I found nothing which handles mouse buttons. I also looked for an image viewer with any options for mouse input, and nothing I found. </p>


问:
Disable YouTube AutoPlay on Home Feature
I'm having trouble disabling YouTube's "AutoPlay on Home" feature on my wife's phone/account. I've followed the instructions provided on Google's support site, but when I reach the settings for "Autoplay", there is no "AutoPlay on Home" option to change (see below).

ex. YouTube Missing AutoPlay on Home

I believe she is running v14.23.50 of the YouTube app for Android 9 on a Pixel 3 phone.

Can I somehow get to this setting? Should I report this to YouTube?


问:
S7 slow practically unusable at app layer
I know this seems a common complaint but I've been through the forums and can't find any solution to this very specific problem. Symptoms: Since returning from abroad 2 months ago, my S7 is barely receiving data from the mobile network at the app layer. e.g. I just tried to load google news and it took about 20 seconds. Next two attempts timed out.

Weird thing is if I enable the hotspot and connect a tablet or laptop, it loads the same page instantly. Therefore antannae is obv. fine, data transfer test from the laptop to the hotspot are as follows:

However I can't even run that test directly on the phone.
On wifi it behaves much better with no noticeable slowness of data transfer.

What I have tried:

Uninstalling all games, unnecessary apps my kids had on etc.

Clearing the cache

Using a cache cleaning app

factory reset

hard reset

wiping the APN settings and re-pulling

every permutation of the network's APN settings

none of the above has any effect. I've pretty much taken to bringing my 7" tablet around nowadays and hotspotting instead of using the phone directly.

Can anyone please put me out of my misery - am just on the verge of chucking the thing altogether now..


问:
Developer permissions
Is there a way to remove or deny permission of system packages
Example an app has permission to com.android.vending.BILLING?
I have root access</p>

Title: Developer permissions


问:
How to save sessions in browser
I use Session Buddy browser session manager chrome plugin quite heavily on desktop and I want similar functionality on android.

I know chrome does not have plugin support on Android. So I tried bunch of plugin on firefox. I was able to install almost all plugins on Firefox Android. However none worked at actual functionality of saving sessions. Some simply had UI malfunctioning while saving sessions, other simply threw error.

Has someone tried successfully saving browser sessions on Android?

Edit

Seems that Tabboo plugin is working. But still I will welcome any recommendations, as it does not let us import, export sessions. Ok, it seems to be buggy. We cannot open saved sessions. Can only delete url from session, rename session name, cant open session, cant open url from session.

Also tried tabSession, Saving sessions and opening them working. But it shows only name you gave to the session while saving in its UI. So UI is just a list of names of sessions. It does not show URLs within each session.

Just came to know we can use kiwi browser on android which can install extensions from chrome store. I tried installing session buddy in kiwi. The extensions worked quite well, with some limitations. Able save, open, export sessions. Seems that session buddy cannot capture tabs in incognito. Also there are some UI glitches, may be since the plugin is built for desktop screen asect ratio.

Title: How to save sessions in browser


问:
Disable music ticker on ambient display
I have a bootleggers ROM (Android 9 pie) installed on a Motorola Moto E 2015 phone and it lights the display (ambient display) every time a new song starts playing on the phone. There is a setting to toggle the "music ticker" in the bootleggers dumpster > lockscreen settings, which is turned off, but the ticker still appears.

Is it possible to disable the music ticker somewhere else?

Or maybe this is a bug of the ROM. If anybody is using Bootleggers ROM 4.2, pie, could you comment about the behaviour of the music ticker on your device?

Title: Disable music ticker on ambient display


问:
Enable data and sms on CDMA network programmed number Galaxy S7 Edge
My Galaxy S7 edge (G935P) sim card slot is broken. It doesn't recognize any sim card I put.
I managed to program my phone number into the phone using CDMA Network. I can make calls, but I can't send sms texts or enable data.
When I try to enable data I get a message "Insert sim card to access network service".
The same thing when I try to send a text "sending failed".
Is there any way to trick the phone to think there's a sim card when there isn't.</p>


问:
Number of Vibrations for Notifications
My phone just updated to Android Pie, and like many hapless users I'm trying to adapt to the many changes. One thing that annoys me to no end, and that I can't seem to find any information on, is that the number of vibrations for a notification has jumped from two to five. I like having vibrations turned on for notifications, especially if I'm in a meeting or at a loud event, but if I'm getting five vibrations I'm going to assume it's a phone call.

Is there any way I can change this? Preferably back to two, and without rooting my phone.

Title: Number of Vibrations for Notifications


问:
New Samsung Note 9 battery charger compatibility
I just bought a new Samsung Note 9 (Exynos 9810). Little did I know that the model I ordered was the EU version and not the US version, so the charger I received was unusable with any of my power sockets. I ordered an adapter online but thanks to my impatience, instead of waiting for the adapter - decided to just charge the new device for the first time with my old Asus Zenfone charger. The Note 9 charged pretty slowly, even though the Asus charger is a fast charger (5V, 2A or 9V, 2A similar to the Samsung's 5V, 2A or 9V, 1.67A). I charged it to 100%.

I've been experiencing pretty average battery life, which is weird since the Note 9 has a 4000mah battery. I have however been using the phone pretty heavily as I've been setting it up with my accounts.
Did using the non-OEM charger for the first charge-up of the device - mess up the battery performance in any way?

I've been beating myself up over this, so I decided to do a Geekbench battery test (Partial Discharge), which returned a score of 4653 with "Medium confidence", which is lower than the score posted online (approx. 5000) However, I don't know if the online scores are for Partial Discharge, and the comparison scores my phone displayed for example for the Galaxy S8 were also lower on my phone than the ones posted online...

Am I worried over nothing? Would charging the battery for the first time with a non OEM charger hurt the battery/ phone? Is the battery charged at the factory with the OEM charger before it is sent to market?


问:
Unrooting phone
I bought a new phone from someone the other day and I would like to use it. The only problem is when I was going through it I noticed that they at some point rooted their phone and put some of there own system files and apps into the system. I can't access the root of this device; I have been trying for days now and I don't want to put my information into this phone till I have been able to wipe it clean of the old user's root system data. How can I force reset this phone to wipe not just the local user data but also the system user data they put into? </p>

Title: Unrooting phone


问:
How to disable automatic updates on Moto phone with Android Pie
I have magisk installed because of which updates are failing. Every few hours it will download the update in background, and try to install, and fail.

It's draining my battery and consuming my limited wifi internet.

I want to disable them until I have sometime to uninstall magisk and update it manually.

Note: I am fine with annoying notifications but don't want wifi/battery issues.


问:
Is there ANY way to use Google services on a Huawei phone that has them blocked?
I just bought a Huawei phone and then realized that google play services had been blocked. So, I tried a workaround by installing the latest version of google play services apk, which doesn't work. The notification showed that google play services needs to be updated.
Did I do something wrong? If this workaround won't work at all, can I do something else? For example, if I format the phone and install another OS, would that help? </p>


问:
Mock Location a single app
Currently, enabling the mock location developer setting affects all applications. I am currently testing a single application and require that my real location is still available in other apps. Is this possible?</p>

Title: Mock Location a single app


问:
How can I access my android phone's storage from another device using LAN
How can I access my android phone's storage from another device such as android or PC using LAN?

With ES File Explorer, I used remote manager, but there I am to download files then I am able to use them.
But I want such a system, by which I can stream my audio, video from my android device's storage without downloading through LAN network.


问:
How to do port forwarding over Android USB tethering?
So, for the time being I'm stuck plugging my phone into my PC and using USB tethering to connect to Wi-Fi.

One of my games requires port forwarding for online play, and I'm having trouble getting it to connect. I've gone to my router settings and forwarded the appropriate ports from the phone's internal IP address, but still nothing. Here are the ports needed in case it helps:

DirectPlay7 47624 47624 TCP/UDP

DirectPlay8 6073 6073 UDP

DPlay7&8 2300 2400 TCP/UDP

Outlaws 5310 5310 TCP

I've also been fiddling with Telnet and ADB, but to no effect. Any suggestions?

OwnerDisplayName: ChelonianEgghead


问:
App downloads big data again on every start
I have changed many of the permissions (especially by Play Store and Play Store Services). Now many apps works unusual and many doesn't work but doesn't give any understandable error.

One of them is a game "World of Tanks Blitz". Whenever I open the app, it asks for Google account login and then it starts to download the big data like GBs for every tank.

How can I fix or at least how can I understand the problem exactly?


问:
Why is the GPS Chip Not detected on ARCHOS Alba 4?
I am using Android Nougat, but there are no options for GPS in the locations menus (just battery saving >> wifi, bluetooth and cellular network only)

Other GPS apps do not even detect the chip in the first place... why?


问:
Screen lock types None and Swipe is disabled
When I tried to remove my screen lock, the screen lock types None and Swipe is disabled. It shows that "disabled by administrator, encryption policy , or credential storage". How can I change my screen lock to None ?</p>


问:
Virtual addresses managed by Android
I have the following questions:

How Android map virtual addresses to physical addresses?
Does Android use virtual memory like desktop OS?
What is the replacement algorithm used by Android?

These questions are quite simple to Desktop OS's and there are a lot of books about it, but Android looks like a black box in a matter of these concepts.

There are three questions and answers to any of them are welcome.

Title: Virtual addresses managed by Android


问:
want to use my phone as a public proxy
I have a rooted Samsung Galaxy S5 running Android 6.0.1. I want to use the phones mobile data as a proxy for my VPS. Obviously they are not in the same network so the proxy needs to be public for my vps to access it. Another problem might be the ISP's, who block the ports. Can anybody help me out on how I do that :D

thanks in advance

Title: want to use my phone as a public proxy


问:
Samsung Galaxy S5 not connecting PC
I've been unable to connect my samsung galaxy s5 to pc despite having tried for a couple of hours.

I was able to connect to the same pc with a different s5 a few days ago and have tried connecting it to a different PC so the problem is definitely with the mobile, although I have tried installing drivers on PC.

Phone doesn't even show up in device manager.

The option to use the phone as a usb modem is greyed out as it says it is not connected to a PC.

The phone is charging notification doesn't show either.

I've tried different usb cables and different usb ports.

USB debugging is turned on, USB is configured to MDB + ATP (i tried changing it to other things then swapping back but it won't even let me change)

I've updated the phone's os.

If anyone has any other ideas would love to hear them as I need this working for debugging purposes.

Title: Samsung Galaxy S5 not connecting PC


问:
Not granting permission because it was previously installed without?
An app i installed fails at startup, in the logs i see this permission problem:

```<code>Not granting permission android.permission.ACCESS_FINE_LOCATION to package com.nianticlabs.pokemongo because it was previously installed without
</code>```

and

```<code>Ignoring duplicate uses-permissions/uses-permissions-sdk-m: android.permission.READ_EXTERNAL_STORAGE in package: com.nianticlabs.pokemongo at: Binary XML file line #35
</code>```

My phone is a Fairphone2, it runs Android 7.1.2
Buildnumber 18.09.2
Kernel-version 3.4.0-perf-geaadfcc5a2djenkins@lxc-slave05 #1 dd:20180928

The app in question is Pokemon go.

I have wiped and factory reset my phone at least 3 times, had the battery out and everything.

Is there any way to fix the permission problem via ADB?


问:
Android NetHunter can't find several files
I'm trying to get KaliNethunter to work on my OnePlus5.

I'm facing a problem though, and I really don't know what to say of it. There are several errors and they're all No such file or directory.

This is the error log I get:

```<code>OnePlus5:/ # su -c bootkali
Mounting kali chroot...
mount: mounting /sdcard/kali-chroot.img on /data/local/nhsystem/kali-armhf failed: No such file or directory
/system/bin/bootkali: /data/data/com.offsec.nethunter/files/scripts/bootkali_init[268]: can't create /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
/system/bin/bootkali: /data/data/com.offsec.nethunter/files/scripts/bootkali_init[268]: can't create /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
/system/bin/bootkali: /data/data/com.offsec.nethunter/files/scripts/bootkali_init[268]: can't create /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
/system/bin/bootkali: /data/data/com.offsec.nethunter/files/scripts/bootkali_init[268]: can't create /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
/system/bin/bootkali: /data/data/com.offsec.nethunter/files/scripts/bootkali_init[268]: can't create /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
chmod: /data/local/nhsystem/kali-armhf/etc/resolv.conf: No such file or directory
chroot: can't execute '/bin/bash': No such file or directory
</code>```

For the most part it seems I figured it out, but am still asking for assistance.

There is directory at /data/local/nhsystem/kali-armhf/ however /data/local/nhsystem/kali-armhf/etc/ isn't there. It exists in /data/local/nhsystem/kali-armhf/system/etc/.

So now I can either edit the bootkali script or mount the directory (I don't know how).

Kali Nethunter isn't necessarily supported with my device but is supported by older devices e.g. OnePlus3(T).


问:
Samsung Galaxy tab S3 not receiving power from otg y-cable
Sorry to be a noob, but im not skilled enough to see if this question has already been answered.

Ive watched Youtube videos on how to connect an external HDD to my galaxy tab s3 using an otg y-cable.  The y-cable I bought from amazon for $6, it has a usb 3.0 female splitting to one micro usb male and one micro usb female.

The hard drive is recognized but no power is being supplied to my tablet via the y-cable.

i plug my samsung power cable into the micro usb female.  the HDD plugs into the 3.0 female and im using a micro usb to usb c adapter for the micro usb male end of the y-cable, as shown in videos.

can anyone provide advice or recommendations?

Thank you.


问:
How to remove a system app from the Play Store updates list
I wonder how I can remove SwiftKey Keyboard form the updates list.

Notes

It's a system app.

Its Disable button is grayed out.


问:
Can I install GNU/Linux in text mode on android?
I want to use my old smartphone (Moto 3G) like Rassbery Pi to make some low level things with just terminal. I  want to install GNU/Linux in text mode, get access to it with SSH, get connection to Internet and have possibility to type in installed system with onscreen keyboard like in android.

Important thing is that, I want to FULLY remove android and install GNU/Linux in this place. I don't care about SMS, Phone calls etc. ( But things like camera handling, and way to see battery status, playing/recording sounds, or changing screen brightness of the screen are nice to have).

Is there any distribution that can satisfy me? And how can I install chosen system instead of android?

EDIT:
I am seraching for way to install TEXT ONLY operating system. This question Dual booting linux on android galaxy note 10.1 doesn't help me because I am trying to just make Rassbery Pi clone from my old phone.


问:
How to convert mmssms.db from android to ios database
My generell task was to transfer all my sms & mms from my old windows phone to my new iphone.
I found some solution but I'm stuck half way now. It's workaround via android as there seems to be no solution for direct transfer between windows and ios.

What I already got to manage by now using a virtual android device:
transferring all sms and mms via "contacts and message backup" from the windows phone and "sms backup & restore" to the virtual android device.

But now I'd like to transfer the messages from the virtual android to my iphone.
I wanted to use "backuptrans" to do this, but therefor the virtual android has to be plugged to my mac as a usb device. Somehow this seems to be intricate and I didn't manage to do this.

To bypass this problem I tried to copy the mmssms.db or the backup-xml (from sms backup & restore) from the virtual android to my computer and tried to use this as database-file for "backuptrans" directly but this also doesnt seam to work.

My questions:

Is there any workaround to make my virtual android device connect to my mac and appear as a working device so that "backuptrans" can use it?

Is there a way to transfer the copied mmssms.db-file or the xml-file to a fileformat either backuptrans or my iphone can read as a database file?

I'm using VMware Fusion in macos 10.8 for the virtualization, Android 4.4 in the vm, macos 10.8 or 10.12 for accessing the iphone.


问:
Notifications arrive when the app is opened, but not in the background
I don't know if it's the right place to ask my question, if not, sorry.

1st, I was using Sony Xperia Z5 premium for the last three years, never faced any issues but few days ago, I switched to Samsung galaxy s10+ and the problem I'm facing is, I'm not getting notifications from WhatsApp or some other apps when they're not opened.
When I open them, I got couple of notifications.
If I don't open that app for whole day, and at night when I open it, I get notifications of all day.

Please guide which settings or options I should see?


问:
Honor 8 bricked after batter replacement
I replaced the battery myself.
After finished, I trun on the phone, it vibrates once and the screen light up a little (hardly see it) but cannot boot. When I press and hold the power button, it turns off but on again automatically with the same phenomenon. What did I do wrong? I can charge the battery (the LED changed from yellow to green).</p>


问:
Local website unreachable from Android phone
I have a local media player running on a raspberry pi that that provides a web interface via WiFi. This interface is sometimes unreachable (via hostname or IP) from my Android phone while it is still accessible from my laptop and from an iPhone in the same network.

I am posting this here since I suspect a routing problem. The WiFi network consists of 3 access points and a home router that also provides DHCP etc.

How do I analyze this? Any ideas on the issue?

OwnerDisplayName: Tilman


问:
Huawei stream S can't send or receive text messages
I have a Huawei stream S which is a Japanese version of Huawei p6 . I cannot send or receive text messages . I did factory reset . Help me to fix my problem </p>


问:
What is correct way to calibrate battery?
I've watched videos and referred some random sites.
But I'm not sure if these steps are correct.

I used battery calibration app but that doesn't help.

I'm using Asus Zenfone Max Pro M2.
Running on stable pie.

So how to calibrate battery accurately?


问:
Broke my Nexus 4 screen, is there a plug & play keyboard so I can unlock it?
I broke the screen on my Nexus 4 and it has a passcode for the lock screen.
Is there any way I can unlock it without fixing the screen, e.g. buying some sort plug & play keyboard for the micro-USB port?</p>


问:
Any way to get phone statusbar (battery, wifi, notifications) showing on Harry Potter: Wizards Unite?
Question is pretty self-explanatory, I got a Nokia 8 with Android 9 (not rooted), started playing HP: Wizards Unite and am very irritated that the upper status bar of the phone which shows battery, notifications, clock, wifi etc is no longer visible unless I swipe on it, but then it again dissapears. I tried searching from the phone settings as well as the games settings, but to no avail. I'm looking for a way to get the upper phone status bar to be permanently visible while playing the game, so I can monitor my battery life easily.

Ps. if this is not the right forum for this question, feel free to vote on migrating it to the right one, just thought some android guru might be able to help.

If anyone has a solution to this, I would be very grateful.


问:
How do I root huawei mobile phone?
This specific huawei mobile I have is known to be very hard to root or not able to be rooted at all. I will add the specs below in this description if needed.
Huawei Y538 - Android 5.1
API5.1 (22)
FLASH_SIZE8 GB</p>

Title: How do I root huawei mobile phone?


问:
How can I see the thermal data of my CPU?
I have a Samsung Galaxy Note 8 with Exynos 9 CPU and use the app CPU-Z. I can see all data, but if I want to see the thermal data, there it is: "no thermal data"

Why is this? Is it because I haven't rooted my phone or is there an other reason? How can I fix this?


问:
How to quickly extract archives on android?
After spending a few hours on annoying file management apps and the various archival apps. I can't find a quick way to do this. Most of these are built like users are supposed to use them for the PC. The quick PC extraction of Right Click "Extract All / Here" is pipe dream on android.

How can i go about to do this?
Can I find or force an application to extract everything it finds at a certain location and extract it where it is.

I looked for some solution that automatically extracts archives upon download, but thats convoluted even on PC (but at least doable - do a command line and if you want trigger it by a folder monitor change). Couldn't make any headway on android for sure.

How would you go about easing your time with archives on android. Dumping them all in one place is fine by me so long as I don't have to go through annoying managers for every single archive i get.


问:
How can I get all 6000 photos back out of Samsung Cloud at once rather than doing them separately?
My Samsung Cloud storage is full, and it turns out I have about 13GB of photos (over 6000 photos) in there, that have been synced from my phone.

However, I only have around maybe 1GB of photos on my phone. Clearly the majority of photos in my Samsung Cloud are not on my phone anymore.

The first part of my question is, is there any chance that there may be some photos on my cloud account which Samsung has deleted from my phone automatically to clear space, assuming I'm happy that it's still in the cloud?

And the second part is, how can I sync them back to my phone, or even a PC, so I have them again? I can't find an option on the phone and I went to the Samsung Cloud site and browsed my photos, but there's no way to methodically download photos in bulk, and scrolling beyond the first few hundred becomes painful. Is there seriously no way on either my phone or a PC to download all my photos again rather than selecting a few at a time?

Note: "Select all" on the web interface only selects those visible on screen and the system prevents you selecting more than 500.


问:
Why I couldn't monitor traffic from this page?
When I opened the capture log I found nothing from the page other than this when I first tried to visit it using http only, and then I get that security warning and i click proceed to unsafe anyway i still get nothing from that page
although i have the root debugging certificate installed using
HttpCanary


问:
What is adb error on Android?
I want to send a file from my PC in Android recovery mode, but I can not get an error. The error is as follows:

adb push file.zip

*daemon not running; starting now at tcp:5037

could not read ok from ADB server

*faild to start daemon

adb.: failed to check server version: cannot connect to daemon

  And if you use Advacnced> ADB Sideload> Swip from an Android device from https://android.gadgethacks.com/how-to/sideload-flashable-zips-android-with-twrp-0176529/ an error was displayed . How do I solve it?

Data successfully decrypted , new block device: '/dev /block/dm- 0'

Updating partition details . . . . . .

done

Unable to mount storage

Successfully decrypted with default password.

Updating partition details . . .

.. .done

Unable to mount storage

Failed to mount '/data ' (Invalid argument )

Full SELinux support is present.

Unable to mount /data/media /TWRP/ . twrps

MTP. Enabled

Starting ADB sideload feature...

Title: What is adb error on Android?


问:
A wrongly 'I need help' text was sent from google maps
I left my phone where I work and I needed a #. I asked a coworker to gain access. An 'I need help' text alert was sent to one of my groups and I recieved the same message from one of them. It was sent 20 minutes before it was discovered. Upon frantically calling to find out what kind of help was needed, I found that it was bogus. It was unnerving, to say the least. Aside from shutting it off, what can be done to correct this? </p>


问:
Looking for an interface for numerous video files
I'm using VLC on LineageOS, to browse and play files (audio or video) in folders that can have hundreds of items.

The LineageOS native file manager doesn't let me play some files (notably, Opus), thus I open my files with the VLC file browser. But it has 2 caveats:

The view isn't very compact, so I see only a small part of file names.

When there are hundreds of video files in the folder, VLC starts generating thumbnails for these, with is a very, very long task, and once such a task has begun, VLC hangs when I try to open any file...

Therefore, I'm looking for the following solutions:

Tweaking VLC for a more compact files view, and even more importantly, disabling thumbnails generation.

Finding an alternate file manager that doesn't have the above issues, and let me open my files (mkv, mp4, webm, opus, m4a). As a bonus, I'd really enjoy a file filter so I can search for files with specific words in the name.

I guess the VLC configuration isn't doable (but it would be so great!), so I guess I'm looking for a new file manager that will fulfil my above needs. Thanks in advance!


问:
Connecting my calendar (s) to Google mini?
∆ Huawei p20 lite nova e
∆ Bundled calendar
∆ Google calendar which is set default
∆ Calendar Widget (have given access to G)

I ask my Google mini to tell me what's on my calendar or read out my agenda and it just says I'm sorry I don't understand or something like that and I've looked on a couple of websites and they all have this step-by-step that seems really outdated because my Google activity page looks very different I'm assuming it's the latest.

so folks I would like to have access to my calendar while talking to Google mini home which is a set on the same wifi and and I've tried it with VPN on and off and it still the same.

So there's no confusion I'm asking Google mini to read my calendar which it doesn't.
Thanks


问:
Why did my Android's MicroSD Card just stop functioning properly?
My Android Phone is a Motorola Moto G6, Software version 8.0.0. On this device, I have a 400 GB Samsung MicroSD Card [ https://www.amazon.com/SanDisk-400GB-microSDXC-Memory-Adapter/dp/B074RNRM2B ] formatted as Internal Storage. This was to allow Syncthing, a peer-to-peer file synchronization app, to sync all of my files (~300 GB among 6 folders) between it and my 2 computers. I have had this setup running for 4 months, and it has been seamless.

This system appears to have stopped functioning.

For the past week, I have been taking screenshots of apps, and encountered what I presumed to be a bug. The screenshot (taken with the System's POWER+VOLUME_DOWN trigger) is taken, but for a moment the notification indicates that the screenshot failed to an unknown error. However, a moment later it reports "Click to View Screenshot." I confirmed that the screenshots saved, and synced, and brushed this off as an intermittent bug.

This morning, I attempted to save the screenshot as I always have. However, the phone reported "Insufficient Space" as the error. Curious as to if I accidentally moved some of my ML Data Sets to the Shared Download Folder, I checked my FX File Manager; it crashed. The system File Manager, Storage Management in Settings, and Google Chrome's Downloads Manager all report 90 GB free of the 366.8 accessible.

Additional Discoveries are as follows. In my attempt to get FX working, I tried to re-install it. Google Play repeatedly threw an unknown error. As an additional check, I opened Chrome to try to download a picture from a page. The download never moved beyond 0%, despite plenty of bandwidth being available to load additional web pages, and auto-play ads still loading. The Camera will not SAVE pictures anymore. I take a picture, and it goes to the corner as always for preview. This time, "Activity Not Found." The File Manager also reports that no new images were found.

In my search, I tried a recommendation to rename "Pictures" to "Pictures2", which many users reported to work for the Screenshot Issue. However, the file manager can not rename, move, or delete folders or files! Files can still, however, be viewed. I tried to do this from my computer. Despite the device being present, the machine reports "Unable to Access."

I have attempted to clear the System Cache, to no success. I have tried multiple reboots in between each effort. I have tried removing and re-inserting the MicroSD card.

These problems were not present as of 11:32 PM last night, when I last took a picture and it synced to my computers. As of this morning, the MicroSD card has become, functionally, read-only. To prevent any loss of data, in either direction, I have not run Syncthing since I noticed the problem.


问:
Can't record voice notes in whatsapp
so my friend has a samsung edge 7. whenever she tries to record or listen to a voice note on whatsapp the voice note is full of notification sounds when while recording there was no such noise. i've checked, and the phone has the latest update. ive uninstalled whatsapp and reinstalled it, no dice. </p>

Title: Can't record voice notes in whatsapp


问:
Android firewall? Blackhole? One IP unreachable
I have a device, an ESP8266-like, connecting my automower to my wan.

If I hardcode the address to 192.168.1.48, it is accessible from my phone and my laptop, among others I guess.

If I hardcode the address to 192.168.1.44, it is not accessible from my phone, but still from my laptop.

I don't get pings back when pinging 192.168.1.44 from the phone, a traceroute end with the phone's own IP, as I do when I traceroute to an unreachable address.

In short, something on the phone seems to be blocking that particular IP. Rebooting the phone doesn't help.

The phone is a OnePlus 5, Android, OxygenOS 9.0.6

EDIT: all devices are on the same WiFi, Ubiquity devices.


问:
Google Sheets Read Only on Android
I created a spreadsheet in Google Sheets. I shared the link with two users. They can click on the link in the e-mail and can edit the spreadsheet with no issue. However, one of the users created a shortcut on their Android Phone (LG G7 ThinQ). When she opens the spreadsheet from her phone it is Read Only and cannot perform any edits. She is using the same gmail account on her phone that I sent the link too. Any ideas what might be causing this?</p>

OwnerDisplayName: Dan Nick

Title: Google Sheets Read Only on Android


问:
What exactly happens after rooting a smartphone?
I want to root a tiny cheap smartphone that my 6-year-old grandson uses.

He's a real techie, but he's always changing his password and then forgets to tell me so that I can store it in LastPass. So I want to install a parent protection app, where I'm the Admin, and he's a normal user (as on Windows 10). I already have Kaspersky Safe Kids on the phone, plus he has downloaded a lot of games.

There's no space for a parent protection app, and he's not allowed to use stuff like Chrome, so I want to root the phone to allow me to remove pre-installed stuff.

Here's my question: What exactly happens after rooting?

Is a password still needed for the first login after rooting - because I'm sure he's forgotten it.

Will every app have disappeared? (That would be OK.)

Thanks.


问:
Where is usually located the Python Interpreter on Android devices?
I have installed qpython. Just don't know what exactly is an interpreter neither where should i look for it on Android devices. Thanks</p>


问:
Stock OnePlus 3 randomly rebooting multiple times per day
It might have been since the update to Oreo or just coincidence but my phone started rebooting by itself. Also noticed when it reboots after doing the usual booting animation which takes much longer than usual it will ask for unlock pattern and do the boot animation again. I notice sometimes after reboot the phone feels weird, a bit sluggish and some apps don't work properly. For example anything that calls the camera will say it is not available. Other things like for example VoIP features in messaging app won't work. Another reboot would fix the issue or it would stay the same and require another reboot. This issue got worse and worse where it would require multiple reboots or take longer and longer for the reboot sometimes just switching off during the reboot.

Of course I tried wiling cache. Didn't help.
I wiped the phone and gave it to my mom and it seemed to fix it at first. It started appearing again eventually. So I see multiple possibilities.

Rogue app. But my mom has only a few apps, different from what I used.

OS update messed up? Phone is currently on latest OTA on Pie. Would a custom rom help?

Battery issue? This would be simple to fix but the phone rebooted regardless of charge state, once I saw it even doing so while hooked up. I didn't observe a drop in charge after reboot either.

Mainboard / Nand issue.


问:
Do not auto-connect to Wifi connection in Android 7.0
I have a Moto G4 phone running Android 7.0. There are multiple Wifi connections in my workplace, and I want to default to the private Wifi network, while having the building's Wifi as a backup.

In the Wifi connection's settings, I do not see an option for Do not connect automatically.

As far as I know on Xiaomi and Samsumg phones, there is an option not to connect to a Wifi network automatically. How can I achieve the same result with a Moto G4 / stock Android 7.0 phone?


问:
Google Play incorrectly detects, if application is installed or not
td;dr: I see "Installed" button on many applications at Google Play which I never installed on any of my devices and which are not installed right now (happens only through website / PC). In addition, I have to login each time I click such "Installed" button even though I'm already logged-in.

What's wrong with Google Play application's installation status:

each time I browse some application, I can clearly see "Installed" even though this is not true (I don't have particular application installed on any of my devices and I never had it installed),

each time I click this button, I must login, even though I am already logged in to Google Play (and even though I was logging-in again just a 15 minutes ago, while installing previous app),

after I login I see the list of devices on which I can install given application (because it is not installed on any of it so far), but in the background there's still "Installed" button clearly visible.

How it is possible that 10+ years old Google service fails at it's very core -- i.e. providing me with the information what is or what isn't installed on any of my devices?

And why do I have to login again, even though I did it 15 minutes ago and even though I see my avatar and account information in the top-right corner of the webpage all the time.

EDIT: The described problem occurs when browsing Google Play via browser (PC) only. It never occurs when using mobile version of Google Play service.


问:
How to avoid Android Pie (call recordings BLOCKED!!!) with my security update?
My Huawei with Android 8 keeps pestering me constantly with "System Update Available for your device" and the choices are "download and install" and "later" but not "Leave me alone it's my damn phone". The update has a cryptic name like:

DRA-L21 1.0.0.151(C432)

Now, since Android 9 has made it impossible to record calls any more and that is the very most important feature in my phone, how can I be sure that this or any other update is not going to install Android 9 but only security patches?

Sources:

https://bitbucket.org/copluk/acr/issues/2418/kb-android-9-p-call-recording-issues

https://bgr.com/2018/08/15/android-pie-update-call-recording-apps-dead/

https://www.xda-developers.com/android-pie-blocks-non-root-call-recording-apps/

https://www.androidpolice.com/2018/08/15/android-9-pie-puts-end-third-party-call-recording-apps/

Let me quote a paragraph from the first link, which explains the extent of the problem:

A quick search on the Google Play Store shows more than 200 million total installs for over 200 call recording apps. It is clear that there is a legitimate need for call recording support. We alone received many thank you emails from our customers telling us how call recording helped them to win legitimate court cases, recover financial losses, listen to voice of loved ones who are have passed away or even save their lives!


问:
Can't change DNS Server on Android
I have few devices in my local network.
I want them to have names like in this example:

```<code>192.168.1.1    router.home
192.168.1.2    nas.home
192.168.1.3    rpi.home
</code>```

I setup dnsmasq server on my NAS server (192.168.1.2) and edited router's DHCP config to have IP of NAS as first DNS resolver.

When I enter nas.home/ on my desktop PC everything works fine, but Android phone on same network does not, even I see right settings in WiFi description (first DNS resolver is 192.168.1.2, static IP etc.)

What can be problem? Even my notebook on WiFi works fine. Just phones not work.

OwnerDisplayName: Baterka

Title: Can't change DNS Server on Android


问:
Sharing internet from android to PC over LAN
Is it possible to share my mobile connection with a PC over a LAN cable?

Anyway, My scheme is OTG micro USB and then OTG USB ethernet adapter and then LAN cable to Windows (Bootcamp Mac).

Any help would be appreciated.


问:
Why is ART still needed on Android?
The reason Andy Rubin chose Java for Android Dev is not publicly known, only speculations, but it seems to me that the combination of being able to run a Java app everywhere (because the earliest version of Android used JVM) and the huge popularity of Java made it a sexy choice.

Android Run Time (ART) is the second Iteration of Java Virtual Machine after Dalvik Virtual Machine.

Obviously, Write once, run everywhere, which Java promised is not True on Android due to the highly modified JVM == ART.

My question is this:
since apps written for Android are not portable (i.e the apps are platform dependent), why still hold on to it?

Why convert to bytecode before running it on ART and not just compile to native code directly without the need for an interpreter (ART) like in the case of Apple's Swift?

Why tolerate the performance loss just for ART?
an iPhone App on 4gb ram will perform better than the same app on Android with 6gb of RAM due to the absence of the possibly unnecessary ART layer.

In 2019 and beyond why is the ART necessary?

Title: Why is ART still needed on Android?


问:
How to change the subnet mask for Wi-Fi hotspot without root access?
If I start a Wi-Fi hotspot, devices connect with IP addresses in the range 192.168.43.xxx. How do I change that to the range 192.168.1.xxx  ?

I have read the answer to How to change the default DHCP IP address range on Android 7.1.2? but it requires a rooted device and I want to do this without root access.


问:
Why do notifications stop for WhatsApp after few minutes?
I have Nokia 5.1 Plus with Android Pie.

Now, since a few days, I'm facing this irritating problem. When the WhatsApp is open, it works fine. You receive push notifications, and messages are not delayed.

When you minimize it (i.e., open other apps) and leave the phone away, I don't notice any problem for 10-15 minutes. Even when screen is locked, I receive WhatsApp notifications.

After 10-15 minutes, WhatsApp kind of freezes. When I try to send message from other phones to my phone, I see nothing. When I use phone and open WhatsApp (which wasn't closed, just minimized), I see it takes 2-3 seconds to fetch pending messages. So it kind of stops.

I have removed all battery optimizations settings for this app. Did reset of the app, still can't solve this issue. How can I fix it?


问:
Sudden, semi-random reboots of S7
I bought a used Galaxy S7 about a month ago.  Ever since I bought it, it has had a tendency to reboot fairly unpredictably for no obvious reason.  I've noticed that if I am using a particular app when it reboots, it will usually reboot again if I attempt to use that app soon after startup.

Currently the phone is locked in a cycle of rebooting within a minute of startup regardless of what I do (including booting in Safe Mode).  It has rebooted at least 20 times in this way, with uptime always or almost always under 1 minute before reboot and no interaction with the phone at all.

I've tried clearing the Dalvik cache and other cache partition; although this did not fix the issue, I did notice that it took quite a bit longer (multiple minutes) to reboot on the first bootup after clearing the caches.

How can I get my phone to stabilize and hopefully avoid future unsolicited reboots?

UPDATE: whoops, forgot to read that info link for [boot-loop].  Apparently at this point I'm expected to give up and do a factory reset.  However, I'm concerned that the issue may be that there are bad blocks in the NAND.  Is this a possibility, and if so, is there a way to mark them so the firmware does not attempt to use them?

Title: Sudden, semi-random reboots of S7


问:
Call with another caller ID
Dear Android enthusiasts,

I have a landline telephone with expensive calling rates, while the contract in my android smartphone is quite cheap. In order to save money I would like to call with my handy, but showing the telephone number of my landline.
In that way people can call me back and I avoid revealing my smartphone number.

Do you have any idea, how to show another telephone number when calling? I know how to hide the number, but that is no solution.
Thanks!

Title: Call with another caller ID


问:
Mount image of encrypted internal storage data partition from android P
When trying to upgrade to a newer rom, my system got a little messed up and I had to format my /data partition. I had made TitaniumBackup and twrp backups but they were on the encrypted data partition. When I flashed the new rom, this partition became all hashed folders and TWRP stopped asking me for the password. I took the time to do an adb pull of the /dev/block/sda21 (which is the device that is mounted on sdcard/. How would I go about decrypting this on a linux device?


问:
Any chance to get rid of "PC Sync" calendar entirely?
Ten years later... Can someone explain me, how did I get "PC Sync" calendar to my stock calendar app on my Android 8.1 / Neffos X9 and -- the most important -- how to get rid of it?

I know, I can uncheck it (what I did) and I won't see any events from it. But, I want to get rid of it entirely. The thing is that it appear on the top of the list of my calendars, when I creating each and every new event, which pisses me a little bit.

Since I've been using Android 8.0 / 8.1 for 1+ year and "PC Sync" appeared just a week ago or so, I'd like to also know what I did or what happened that I was free of it (and happy) for year and now I am forced to see it everywhere around my Calendar app.


问:
Is root required for screen sharing / remote desktop on Android Pi
I am having inordinate difficulty trying to get any kind of remote desktop working on a Samsung SM-T510 tablet I have just bought (which runs on Android Pi).   I have tried Teamviewer, Airdroid and Vysor - and none allow me to do anything meaningful.   (I have enabled Developer Mode).

I have tentatively concluded that something in the Android permissions model is preventing this sharing from happening, which would seem to mean that looking to do this without jailbreaking the phone [ which I don't want to do ] is futile.

Does anyone know if it is actually possible to do screen sharing on Android Pi on a phone that is not rooted?


问:
Motorola Moto X Play IMEI=0
I accidentally ran fastboot erase all and now the IMEI isn't being recognized on stock ROM. fastboot getvar imei returns the correct number, but no matter what ROM I try, it doesn't show in settings or when I dial *#06# (showing as 0). I've flashed the stock 5.1.1, 6.0.1, and the 7.1.1, ROM, but to no avail. My device is the XT1563.

Is there any way to get back my IMEI number?

Title: Motorola Moto X Play IMEI=0


问:
I can't integrate updates to system
I am using Xiaomi Redmi 5 Plus. Unlocked the bootloader and installed TWRP recovery. Then installed Magisk as root agent. Everything seems to be working fine. But I can't integrate updates of the system app to the system. And when I try doing it, it responds with failed. And it seems something breaks and many of my finely running apps no more can launch. They all crash as soon as I open them. </p>

Title: I can't integrate updates to system


问:
How could I make "Do not Disturb" block Facebook Messenger popup?
I have DND (Do not disturb) enable from 8:00 - 17:00 (Priority only), but the Facebook Messenger still can popup, how could I make Do not disturb feature to work on Facebook Messenger?
I'm using Sony Xperia XA1Plus on 8.0 Oreo


问:
Running PC emulators
I have a problem running any PC emulator on my tablet. I've tried both Limbo and Bochs. When trying to run Limbo, I get the message:

Unfortunately, Limbo x86 PC Emulator has stopped

Trying to run Bochs results in no action - it just doesn't start. In both cases the applications appears as black, static windows when swiching between running applications (ALT+Shift).

My specs:
Lenovo TAB 2 A7-10F (4core 1.3 GHz, 1GB RAM)
Android v.4.4.2

PS.
The same problems occur when running the emulators on my Samsung A7 (2017), Android 8.0.0.

Title: Running PC emulators


问:
Why can't I move apps to external sdcard?
I'm using Redmi 5 Plus with global Oreo 8.1 ROM, rooted with Magisk. And I can't move my apps to external sdcard.

I tried with native method of Android. But the Redmi 5 Plus or MIUI doesn't seem to have the option to move the apps. So, I used Apps2SD app to do the work. It has the option to move with just native method. But it failed with new installs into ASEC containers no longer supported. I also tried other apps but the same error.


问:
Called while not using phone, after call, screen stays on, how to fix?
I can understand it staying on for other apps, but after ending a call someone else initiated it should make an exception. Is there a setting to change the default phone app behavior for these cases?</p>


问:
TOTP key extraction from Xfinity Authenticator
I've been trying (and failing) to find where the Xfinity Authenticator app stores the TOTP secret. Nothing in any files in shared_prefs looks like a TOTP key, and I'm beginning to suspect that it's being stored elsewhere. In particular, the com.comcast.xfinityauthenticator_preferences.xml file has the following value in it:

<boolean name="keyCredentialStoredInVault" value="true" />

Any guidance on where to go from here would be appreciated.


问:
Is it a Kernel or a ROM that provides power_supply battery files?
Long story short I was installing custom ROMs to my Android device and one thing that stays in place regardless of ROM I use is a wrong battery stats monitoring. The device always behaves like it's being charged, although it's not.

I've checked the /sys/class/power_supply/battery and voila - there's no battery, only /sys/class/power_supply/usb. According to some docs I've found that will make the system think it's connected to an external power source.

The question is what is responsible for creating this battery file - is it a kernel, or a ROM (i.e. LineageOS, Resurrection Remix etc).

[UPD:] In the document I've provided they write about  /sys/devices/power_supply, not /sys/class/, although here the /sys/class/power_supply/*/ is mentioned as a Kernel interface. Should I assume that it's a Kernel issue then?

It's interesting though, that the stock ROM does show battery stats correctly, although nothing was added to /sys/class/ and TWRP recovery I'm using shows battery charge as -1%.


问:
How to connect USB device to a phone doesn't have OTG

What are hardware and software difference between OTG support and non-OTG support devices (android)?

Is there a way to connect non-OTG device with a pendrive (or other) via USB? Is there any hardware limitations if the slave device is powered externally?

Does the OTG feature comes with kernal/OS or any android OS (6.0 or later) is capable of OTG if hardware supported? If yes, is it same for Android ONE and AOSP?


问:
Finding lost bluetooth device
I was traveling from NY to Cleveland and I misplaced my Sennheiser Momentum TW's.
I used Google My Activity to help see my phone activity, and I see Spotify was opened at 3:21pm which would suggest I still had them after my stopover at 3:03pm (according to Maps timeline). Is there anyway I can view the last time they were connected to my device?

All help is greatly appreciated!
More than welcome to some out of the box solutions!

Title: Finding lost bluetooth device


问:
Google play and play services for Sony Experia T3
I lost my phone and lost all google apps as a result. Now I want to reinstall Google play and play services. Kindly assist</p>


问:
Can I recover files after factory reset if I root after resetting?
Device: ASUS Zenfone 2 ZE551ml

OS: Android 5.0

Notes: Not rooted, USB debugging not enabled, no custom recovery

My phone's storage got too full after recording too many videos and I backed them up to Google Photos. I hadn't backed up or moved the files to any other location and my phone ran out of power in the process of backing up to Google and when I tried to boot it, it got stuck on bootloop (is that what it's called?) where the screen gets stuck on the ASUS logo with the loading circle. I've tried rebooting it, charging it for eight hours, clearing the cache partition, rebooting it again overnight and it still hasn't revived yet. Since my phone is not rooted, developers option and USB debugging is not activated, and I don't have any custom recovery services installed I can't use ADB or SDK and the like.

Since the full memory is most likely the main issue here and I can still access recovery mode, I'm not too worried about my phone getting hard bricked. All I really want to do is recover my data, mainly photos (the ones that might not have been successfully backed up in Google) and .txt files from my Inkpad Notepad app which I stupidly didn't sync/back up for 5 months. As I mentioned my phone is not rooted, USB debugging isn't enabled, and I don't have CWM or anything like that so I can't access my internal memory from recovery mode. I am also almost blind to technology and tinkering with electronic devices is too complicated for me and I doubt I would be able to execute it well, so I was thinking of doing a factory reset and immediately using a file recovery app to recover my data. From what I've gathered, it's possible to recover files from a factory reset as long as the cached (?) file remains don't get overwritten, and so it's best to not use the device after factory resetting it. If I'm mistaken, please correct me.

Now I have a few questions about this; please bear with me:

What application/program would be the best to recover .txt files?

Most file recovery apps can recover images, videos, audios and even documents but so far I haven't seen one that explicitly lists TXT in its list of files it can recover. I really want to recover my notes, so I want to be sure that I can prepare an app that can actually recover my files. I've tried DiskDigger before, but it was to recover an image so I don't know how well it would work for other file types. Also, I would appreciate it if the app were free, although it doesn't have to be so long as it works well.

Also, what android file recovery programs do you recommend in general? Which ones actually work well? Because I've seen a lot of mixed reviews regarding these apps, at least in Playstore.

Would this method work if I root my phone after factory resetting it?

Since my phone was not previously rooted, I have concerns if this method would work. Would rooting my phone after factory resetting affect my data remains?

If this method is possible, could you provide me with step-by-step instructions on how to do it so I don't mess up?

If this method is not possible/unreliable, would you have any suggestions on how I can actually recover my files?

Are my files actually recoverable? Are .txt files recoverable? Will I be able to recover my data and photos in relatively good quality?
I recognise I have been negligent in backing up my data and I plan on never doing it again within my capabilities. I desperately want my data back, so if anyone can help me with this, it will be much appreciated. If anything happens I will be sure to update. Thank you.

Edit: I have not done a factory reset yet, my phone is still just turned off for the time being.

Also, this got me thinking. Does unlocking bootloader and factory resetting delete the data in the same way? If so, could unlocking bootloader make my phone boot properly again, instead of factory resetting first and double-deleting my data. Would that work?


问:
Can I use the phone's mic when connected to a bluetooth speaker?
When connecting the phone to a BT speaker that includes a mic (pretty much all of them), the speaker acts like a BT headset, and the phone's mic is disabled.

Can I use the speaker for audio output only, using the phone's internal mic?

Update: Think about handling a phone call using the BT speaker, but its mic is lousy and noisy, so I want to use the internal phone mic instead.


问:
USB OTG not showing WiFi network even after drivers are installed in Android kernel
I am trying to connect to WiFi using a USB WiFi stick by making use of OTG on my Android Nexus 6. The USB WiFi stick has a separate AP. However, I am unable to see this AP in the list of available WiFi networks on my android phone.

I have installed a CROM with a custom kernel including the drivers of the WiFi stick. I can see the drivers and firmware being loaded using dmesg:

```<code>[ 3480.147186] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[ 3480.161788] usb 3-1: New USB device found, idVendor=2ef5, idProduct=0008
[ 3480.161807] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3480.161819] usb 3-1: Product: Dongle
[ 3480.161829] usb 3-1: Manufacturer: WiFi
[ 3480.161838] usb 3-1: SerialNumber: AB1018S052
[ 3480.174615] wifi 3-1:1.0: Firmware Version: 10441, $Revision: 13790 $
[ 3480.176511] ieee80211 phy9: Selected rate control algorithm 'minstrel_ht'
[ 3480.180991] ueventd: firmware: loading 'wifi/wifi_x/fpga_xc.bit' for '/devices/f9200000.ssusb/f9200000.dwc3/xhci-hcd.0.auto/usb3/3-1/3-1:1.0/firmware/wifi!wifi_x!fpga_xc.bit'
[ 3480.195460] ueventd: loading /devices/f9200000.ssusb/f9200000.dwc3/xhci-hcd.0.auto/usb3/3-1/3-1:1.0/firmware/wifi!wifi_x!fpga_xc.bit took 14ms
[ 3481.666134] wifi 3-1:1.0: probe::FPGA download success.
</code>```

Also, there is a light on the stick that turns green when the drivers are recognized. So, I can say with surety that the drivers are loaded and the device is recognized. However, the WiFi AP for USB stick is not appearing.

When I do the same thing on my Ubuntu laptop, after loading drivers I can connect to two different WiFi networks at the same time, one with built-in WiFi card and the other with USB stick. But I believe this cannot be done with Android, where you can connect to one WiFi at a time.

I suspect that even after the drivers are loaded, Android is only scanning WiFi networks available to built-in WiFi card. Is there a possibility to disable the built-in WiFi in Android and make the Android OS scan WiFi networks available to USB WiFi stick as well?

Thank you.


问:
incorrectly receiving DNS settings from AP when connecting to public wifi
I had to fly recently. The flight had in-flight entertainment through gogoinflight, but I couldn't access it on my phone while everyone around me could.  I thought the problem was with the router but I couldn't access the public wifi in the destination airport, either.  I couldn't even open the wifi login pages to accept the user agreements. Nothing seemed to work!

Cellular internet works fine.  Wifi at home works fine.

On another recent flight, I also took my laptop so I could check network settings against my phone's settings.

```<code># ip addr
</code>```

yielded the same subnet and same gateway

```<code># ip route
</code>```

yielded the same routes, too.
(from memory)

```<code># ip route
172.19.131.141/23 dev wlan0 proto kernel dhcp scope link src 172.19.131.0
</code>```

from my laptop, the login page, or airborne.gogoinflight.com was in the 172.19.134.x subnet, but that should be fine based on the route's mask (/23).

for good measure, I added a 0.0.0.0/0 route through wlan0 but still nothing.
At this point, it looked like my phone knew how to get at IP addresses, but there was a problem with the DNS settings.
I checked DNS settings in /etc/resolv.conf on my laptop:

```<code>/etc/resolv.conf
--------------------
nameserver 172.19.(something).(something)  <--essentially, the access point transmitted the DNS to my laptop correctly and I was able to resolve addresses without problems
</code>```

on my android phone:

```<code>/system/etc/resolv.conf
------------------------
nameserver 8.8.8.8 <--because google and android...
nameserver 8.8.4.4 <--because google and android...
nameserver 172.19.(something).(something)  <--essentially, the access point transmitted the same DNS server to my phone when I connected.
</code>```

Even though I know it doesn't matter, I removed the WAN dns entries to google for good measure and made the resolv.conf file match my laptop's, but to no avail!
I tried multiple browsers (Chrome and Firefox), too,  to make sure it wasn't a browser setting.

any ideas?


问:
Can't erase cache using fastboot on OnePlus2
My OnePlus2 (I think using OxygenOS) displays start icons (normal logo and fastboot, depending on how I boot it), however, afterwards the screen always remains black, while the phone responds to key presses.

Booting in recovery mode starts up the phone too, but never displays anything.

I tried to clear the cache using fastboot (following the fastboot-info on here), but get this response:

```<code>$ fastboot erase cache
******** Did you mean to fastboot format this ext4 partition?
erasing 'cache'...
FAILED (remote: device is locked. Cannot erase)
finished. total time: 0.020s
</code>```

When I tried to unlock, following the -help suggestions, e.g.:

```<code>  flashing unlock                          Unlocks the device. Allows flashing
                                           any partition except
                                           bootloader-related partitions.
</code>```

But it doesn't work:

```<code>$ fastboot flashing unlock
...
FAILED (remote: unknown command)
finished. total time: 0.006s
</code>```

And another command I read about seems disabled:

```<code>$ fastboot oem unlock
...
FAILED (remote: oem unlock is disabled)
finished. total time: 0.009s
</code>```

Is there another way I can erase the cache using fastboot or adb? I hope clearing the cache might resolve the black screen issue on my phone.


问:
Installing a homebrew/linuxbrew formula on an Android device
How would one go about installing a simple homebrew/linuxbrew formula on an Android device via adb? Specifically, I want to install this formula which contains a cli tool called aamath that translates mathematical formulas into ASCII art. I would want to verify that I can run this tool inside an adb shell session. Then a second step (which I may ask in a future question on this site) would be to write my own APK that invokes this tool.</p>


问:
Mobile Legends takes total of 2.2 Gb in my internal storage, but I can't locate where the other 1.4 Gb is
Mobile Legends takes total of 2.2 Gb in my internal storage

I want to know where that 2.2 Gb is located.

I went to /storage/emulated/0/Android/data/com.mobile.legends but only 600+ MB is in there

Went to /storage/emulated/0/Android/obb/com.mobile.legends - nothing there, just a mobile legends folder that is empty.

Where is the other 1.4 GB located?


问:
Backup data from android device (Xiaomi mi A2)
I need to backup data from my android phone. OS is broken (unknown reason). see attached sreenshot https://i.stack.imgur.com/znSXR.jpg
I can't enter bootloader - device stucks.
That's the only options I have https://i.stack.imgur.com/6uB0o.jpg
Device is not rooted. I'm PHP developer but have no android skills. I already tried adb, but unsuccessfully:

adb backup says "adb: unable to connect for backup: closed"

adb shell says "error: closed"

adb pull says "adb: error: connect failed: closed"

I can put ROM update via "adb sideload" but it says "update package is older than current build", as I have newest Xiaomi update
I do not want to make hard reset before making a full data backup.

thanks for any help

OwnerDisplayName: Микола Чорний


问:
mounting multiple ext4 partitions in Android 7+
I am doing away with exFat for my Microsd card after  all my pictures  decayed ,  corrupted and the directory was locked. I cant seem to write into a specific directory. chkdsk will just plain abort saying :

```<code>The disk does not have enough space to replace bad clusters
detected in file \WhatsApp\.Shared of name 1.
Corruption was found while examining files in directory \WhatsApp\ (6).
</code>```

 so I 'd like give a shot to Ext4 partitioning that cheap micro sd card , not just 2 ( the standard app2sd and sdcard1 design ) but 3. One for apps  and other 2 depending on the write activity , I  tweaked the block parameters etc. for each

I am able to mount the partitions &   a rooted Total Commander can see them all
BUT  other apps cannot see the partitions I created.As I understand vold helps other apps be aware of this. So How do I go about getting this 'formally' with sounding 'hackish'

what I did :

```<code>mkdir /storage/<my dir>
mount -t ext4 -o noatime,rw /dev/block/mmcblk(x)p(y) /storage/<my dir>
where x and y are variables from partitions file in the proc dir.
</code>```

I read  about a fstab.<phonename> file out there that can be modified but it would be overwritten every boot.

even the 2nd partition that app2sd  ( or link2sd) creates can ONLY be approached as root. So prolly those apps that ask for root can see this stuff but other apps can write to it

Ext4 is linux .  Sounds like Android seems to ignore its own 'biological' kid ext4 and instead recognize a stepson 'exfat / FAT '

I am sure I am missing something here. Any ideas ?

I am rooted with Magisk  on a Galaxy j7 with of course TWRP ( 3.x) installed

Print env o/p


问:
Android phone OS crashes when turning on. Can I recover the phones data?
I have an non-rooted Moto G5 phone that crashes when getting to the main home screen. I get a message that says process system isn't responding and I get the the options to "close app" or "wait" and then the phone crashes 10 seconds later.

I can get the phone to recovery mode and I tried to wipe the cache but that did not help.

I can get the phone to the fast boot screen. If I connect a USB to the phone I see text that says "Transfer Mode: USB Connected"

Can I use Recovery mode or fastboot mode to get my data off the phone? I'm willing to trash the phone as long as I am able to get the data off the phone.


问:
block facebook app in WiFi system
Honestly, I want for my kids not to use facebook.
But, they still use facebook app on the wifi network.

I successfully blocked facebook domain with the router management on my home wifi network.
So, this facebook website was blocked in windows system, and other android system.
But, facebook app still access to the facebook website(?).

How to block facebook app?
I cannot find domain address using facebook app.

Title: block facebook app in WiFi system


问:
I found apps that I have not installed. How can I investigate this?
There are 6 apps on my phone that I haven't explicitly or implicitly installed.

Most likely they were installed today, as they happened to get on the first screen/page, so I immediately noticed them.

Of course I didn't use the web/desktop Play Store to install them. And chances of the phone being unlocked in my pocket and installs 6 apps by mistake are none.

What is even more suspicious is that when I go to to Play Store, the apps show (install) button instead of (open), as if Play Store couldn't detects that they are installed.

How can I investigate this?

HUAWEI Mate 10 pro

Model BLA-L29

EMUI version 9

Android version 9

Non-rooted

The applications are:

Asphalt Nitro_com.gameloft.android.GloftANPH

Assassin's Creed Unity

Arno's Chronicles_com.playwing.acu.huawei Dragon

Mania_com.gameloft.android.GloftPDMF

Kingdoms_com.gameloft.android.GloftDMKF Spider-Man Ultimate

Power_com.gameloft.android.GloftSMIF

I extracted them with an APK extractor.


问:
AndroidTV Access Point
I got an Android 9 TV Box with root access connected via LAN.
Now I want to use the WLAN as an access point/bridge with same SSID/password and after the handover the IP should stay the same.
The basic hotspot feature works but without the requirement that the IP on e.g. smartphone stays the same.

So basically I want that the Router/Gateway is the only DHCP in the network.
Is there any app or method to do this?
All devices in my network got reserved gateway IPs and I need static IPs because of my "smart" home...

Since English isn't my first language I used my paint skills and made a little picture of the situation:

Title: AndroidTV Access Point


问:
Delay and group notifications
I would like to be able to reduce the number of times my phone interrupts me while I am working, without significantly decreasing my responsiveness. I have a few ideas for how to do this, but I haven't found a way to actually implement any of them.

Only receive notifications every N minutes. For N=10, at 2:00 I would get a few notifications. Then at 2:10, I would get the next set of notifications.

When my phone receives a notification, check when the last notification was delivered. If it was less than N minutes prior, wait until N minutes has elapsed then deliver all the notifications received in that time. This is the ideal solution, in my mind.

One suggestion (mentioned at Delay notifications) handles silencing messages delivered at nearly the same time, but it doesn't alert the user about the second notification after the time has passed. It essentially just silences the phone for 1 minute after receiving a notification.

Title: Delay and group notifications


问:
What happens to the encryption key on "Forget SD card" action?
Recently my SD card, formatted as internal storage, got inaccessible for the phone (Moto G5) for some reason.

If "Forget SD card" option was selected, does it wipe out the SD card encryption key from /data/misc/vold?

Does it make sense to root the phone and try to extract the key?


问:
Where can I find User Data of an app?
I have downloaded an app on my phone because I want to take out information from it. It has pages (In image form, probably PNG) that I need on my computer. I went to storage and I clicked on the app, in "Space used" it says the app size is 57.27MB, but I want is the user data (Because when I first downloaded the app, the pages weren't there, but when I opened the app they gave the option to download the pages and I clicked the option to downloaded all pages). The user data is 288MB, and the total size of the pages is probably somewhere in 200MBs. So it means the pages are in "User Data." When I connect my phone to my computer (through USB) this shows up:

So if the images are in User Data, from which of those can I locate the "User Data" of the app?
Note the app's name is Al-Muhaffiz and it was published by Mahad Al-Zahra Publications.

Title: Where can I find User Data of an app?


问:
How to edit ES File Explorer default view
The Home Page of ES File Explorer is shown as

I want Home Page as a default view, when I open ES File Explorer.

I tried to change from here.

But it's not changed.
Pls let me know, how to change it?

Regards
Smith


问:
app2sd link2sd nightmare ..all Fully Linked apps disppear
One advantage in using app2sd ( or link2sd ) was that if all your apps are totally linked

when you swap out phones you would hope to 'carry' your apps with you and of course space savings to /Data

I know how linking works but my question is about how app2sd and link2sd "remember' how apps are linked.

I am facing a constant problem  where my ext4 partition # 2 does not automatically mount. I have to do soft-reboot  or use "Mount 2nd partition" after the boot. It does not want to do this on runtime and after this only partially linked apps will show up. I am rooted via Magisk with Global Namespace turned on .

One of the consequence of this  is if an app is 100% linked it Just disappears ...WTF ..whoa  ! what a waste of time linking. Why does is do that . What's happening under the covers ?

Both these are clone apps but I have been using app2sd for sometime after Link2sd dev. wont reply to emails ( I had the paid version )

These apps store linking info into an app2sd database ...why then cant this info be preserved. All my apps that are 100% linked ( well to be precise those apps that have apk , and Libraries ( lib ) linked as against data and ext_data and cache . So an app with apk linked and data , ext_data & cache on internal would still fall in the 'disappear' category  )
keep disappearing Those that are part linked will appear .


问:
AVD camera configurations and key mappings
AVD: Android Virtual Device

Currently available AVD camera configurations are...

Front Camera:

None - no camera installed for AVD

Emulated - use a simpulated camera

Device - use host computer webcam or built-in camera

Back Camera:

None - no camera installed for AVD

VirtualScene - use a virtual camera in simulated environment
Emulated - use a simulated camera

Device - use host computer webcam or built-in

I want an option... say...

HostSystemScreen - capture your host system's screen

Which simply means that the AVD camera can act as my desktop screen-recorder. For an app that scans a QR code from the web-browser for some verification. installed in AVD, its will be super helpful if its camera opens to view my desktop.

How can I do it?

System Info

OS: Elementary OS 5.0 Juno

Kernel: 5.1.0-generic

CPU: i5-2410M

GPU: NVIDIA GeForce GT 525M

RAM: 12GB

AVD:

API: 28 Pie

Google Play Image

Pixel XL 2

CPU: x86

Couldn't find the tag android-studio

Edit

I've got an idea to link up AVD to any native screen-recorder, but I really need help on it.

I'm not perfect in playing with picture editors

One more thing...

Can I map the HOME & END button of my physical keyboard as start and end of the line being typed in the AVD?

Currently the HOME key navigates to the home screen, and the END key does nothing particular.


问:
How to get IP address from DHCP running on WiFi AP using adb shell?
I am connecting to my WiFi network from adb shell using the following command:

```<code>iw dev wlan1 connect -w WiFi-AP
</code>```

There is a DHCP server running on the AP as well, but whenever I try to get IP address using dhclient -v wlan1, I get the following error:

```<code>sh: dhclient: not found
</code>```

Is there a way to install dhclient on Android 8.1, or is there any other way to request IP address from the DHCP server over a wlan interface?


问:
Galaxy Nexus going into Airplane mode on its own
Sometimes I will notice that my phone has no signal and if I hold the power button down it will tell me it is in airplane mode.  To fix it I need to reboot the phone.

Clicking the airplane mode option once, waiting and clicking it again will fix it but often not.  While in this mode wi-fi continues to work fine, just connectivity to the phone network is gone.

This is a pain because I could be missing calls etc while this is going on.

If the phone is put into airplane mode by me I get the little plane icon.  This does not happen when it goes into airplane mode on its own.

ContentLicense: CC BY-SA 3.0


问:
Is there a way to upgrade Vivo V5 from Marshmallow to Pie?
I am having an Android device Vivo V5, Which has Android Marshmallow installed. Now, I want to upgrade the OS to Android Pie.
Please suggest me any workaround.</p>


问:
proxy settings after latest update
I'm using an S8+ and recently we got a "security update". Before this update, I was able to go into my wifi settings > advance > set proxy to manual and add IP address plus port.

Now every-time I do this, my phone fails to change the settings. It is almost like the "save" button is not working. As soon as I leave the page, my proxy settings get reset to "none".

I saw a post about possible apps that could mess with it, but I haven't installed any new apps or updated old ones. This issue started right after the latest update.

Title: proxy settings after latest update


问:
Phone does not detect SIM after a few minutes
I have a Moto G (Falcon). I have flashed some custom ROMs on it over the past few years, but there is one problem which always persists. When I restart the phone or turn off the airplane mode, the phone detects the SIM for a few minutes and everything works perfectly.

After some time, it shows the message
"invalid card" . I tried multiple SIMS in either of the slots, but the problem persists. The problem wasn't there with the stock ROM.

Did I mess up with something while flashing the ROMs? If not,  does anyone have an idea why is this happening ?


问:
Can I increase the volume of the end-of-call beep?
According to this article, Google softened the end-of-call beep to an almost inaudible level following customer feedback. I happened to like the beep because it made it easy to know if a call had been dropped when the signal was rubbish. Is there a way to bring it back? (I know it’s still there, but, as I said, it’s almost inaudible, even when the call volume is set to max. I’d like to raise the beep volume.)

Thanks for any help.


问:
How to prevent the use of the safe mode with Android?
My 13 years old son found how to start his smartphone in safe mode to disable parental control.

Is there a way to prevent this ? For example, "protect" the safe mode with a password ?

Thanks !

OwnerDisplayName: David Vergison


问:
How to open keyboard in Wine app?
I would like to use Notepad++ on Android, if possible. The only thing I found was this app, which, unlike the regular Wine, seems to emulate an entire Windows system. The only problem: I can't enter text. Surely I could connect a Bluetooth keyboard, but at that point I might as well take a laptop with me. I've also tried simulating a press of the Alt key using the app "XPosed Edge", but that doesn't open the keyboard, unlike in some other situations. Even when I let XPosed Edge enter a preset text, it does not appear in the console window in Wine.

So how do I enter text in this app? Alternatively, is there a different way to get Notepad++ running on Android (or is there a proper app with all of its features)?

Title: How to open keyboard in Wine app?


问:
Where do I find the Samsung S5 private folder in adb?
So my dear old Samsung S5 has died in a bootloop. But before I either wipe it or trash it I wanted to recover my old photos. I've managed to pull most of them by going into their folders and then pull them in adb shell. However, some photos are in the private folder and I don't know where it is. So my question is:

Where do I find the private folder in the Samsung S5 with adb?

The Dr.fone software managed to pull some of them, so there should be some way to reach them I think.


问:
How to switch between APNs using adb?
Is there any adb or shell command available to switch between different APNs?</p>

Title: How to switch between APNs using adb?


问:
How does one remove a single song from a downloaded album?
I have purchased an album on the play store and downloaded the entire album to my Android device, through the Play Music app. I want all of the songs from that album on my device, except for one.

If I click on the breadcrumbs icon next to the song, I can delete the song from my library, which will also remove it from my device, but I don't want it removed from my library. See the first image.

I can click on the downloaded icon below the album name, but that removes the entire album from the device. Refer to the second image.

How can I remove this one song? I have either missed something or this is quite awful software.


问:
msgstore.db nightmare on my WhatsApp
I have a 780 MB msgstore.db WhatsApp file that I recovered when my  phone data was corrupted ( from the available image - data recovery software).

now the issue is that I have the UN encrypted msgstore.db file available and the encrypted files that is dbcrypt or  whatever they go by - those were not recoverable

when I open this 780 MB file with a SQL lite reader I can browse the database so it is not corrupt.

I have yet another 580 MB msgstore.db
which is corrupt and the desktop software cannot read. this is the original file that I recovered from the corrupted image and I had hoped to restore this very file after i wiped  my data and Re installed  Stock ROM

after wiping and new ROM installation
WhatsApp went to the cloud (
Google Drive)

and created A 380 MB  msgstore.db
this file has a lot of my chats missing

so here are my questions please help me I am stranded without WhatsApp for the last two weeks

-- even though msgstore.db can be read on my desktop , if I remove 380 MB msgstore.db & put  the 780mb msgstore.db
in  /data/data/com WhatsApp/data bases and clear cache , WhatsApp gives a message that it has trouble reading my chats please wait while it tries to restore and then it will look for the DB crypt files.

- read about  WhatsApp xtractor
if I use this Python based bat script &
extract  messages as HTML from the 580 MB and 780 MB files,  how can I import them back to WhatsApp so that my chat is restored .

-also read a  method of merging > 2  msgstore.db files. but seeing the fact that a non corrupt 780mb file got rejected , is this a  viable option

Title: msgstore.db nightmare on my WhatsApp


问:
fastboot cannot see my phone (moto3g) when adb can
Introduction:

My phone is moto3g (bootloader unlocked), my OS is Debian GNU/Linux 10 (buster) and I want to install Debian native on it. To do so, I need root my device, and to do it i have to use fastboot and adb command.

What doesn't work:

fastboot devices shows nothing, other fastboot commands shows <waiting for any device> (adb works good, as excepted).

Things that I did

-Turn on usb debugging.
-running fastboot with sudo
-run one of fastboot commands ADB adb reboot recovery
-run one of fastboot commands when android was booted
-installed some drivers with those commands:

```<code>sudo apt-get install libz1 libncurses5 libbz2-1.0:i386 libstdc++6 libbz2-1.0
sudo apt-get install lib32z1
sudo dpkg --add-architecture i386
sudo apt-get install libncurses5:i386 libstdc++6:i386 zlib1g:i386
sudo apt-get update && sudo apt-get upgrade
sudo apt-get install lib32gcc1 lib32stdc++6 libcurl4-gnutls-dev:i386
sudo apt-get install lib32gcc1 lib32stdc++6 libcurl4-gnutls-dev:i386
</code>```

-my andoird rules (sudo nano /etc/udev/rules.d/51-android.rules):

```<code>SUBSYSTEM=="usb", ATTR{idVendor}=="2e76", MODE="0666", GROUP="plugdev"
</code>```

I tried 2 versions of idVendor: "2e76" (from lsusb) and "22b8" from this site.

Had someone of you similiar issue? I think its something with drivers, but I couldn't find that myself.

PS. I have also windows machine, so I can use it if needed.

EDIT: I wasn't rebooting between doing those things.


问:
Can I connect an external flashlight to an Android smartphone and control it?
Can I connect an external flashlight to an Android smartphone and control it?

I've seen it done on an iPhone (YouTube video).
If it's possible, can it be done also via JavaScript?


问:
Phone Clone from Samsung S7 to Huawei P30 blocked?
I'm trying to upgrade a Samsung S7 to a Huawei P30 using the Phone Clone app on the P30.

This works by setting up a WiFi hotspot on the new device and then connecting the old device to it.

This fails every time, but when I look at the old S7 the hotspot has been added to the list of restricted networks, probably because the new phone isn't acting as a bridge to the internet and something stupid in the S7 is deciding it isn't a valid network because no internet.

How do I get Phone Clone to work?

How do I turn off whatever it is in the Samsung phone deciding to block the WiFi hotspot because it's local only?


问:
What services are needed for Google Play Store to work?
I've got a Chinese Lenovo Z5 phone and an Amazon Fire HD 8, which do not come with Google Play Store by default. I know how to manually sideload APK and install Play Store, however I am not sure about the dependencies.

As far as I know the Google Play Services is an absolute requirements. Other than that, some services for account and/or authentication are needed to ensure normal operation. What are they? I've done this a long time ago so I cannot remember.


问:
Problem restoring from a CWM backup
I have a Samsung Galaxy Y (galaxy Young) GT-S5360 La Fleur edition with Android ver 2.3.6

Following method 1B given here, I first found an CWM update.zip file for my phone model from here

I also took a backup after booting into the recovery screen using this update.zip file

It created a clockworkmod\backup\2011-05-17.17.52.06 folder and this folder contains the following files:

.android_secure.vfat.tar   2 KB

cache.rfs.tar             60 KB

data.rfs.tar          166284 KB

nandroid.md5               1 KB

system.rfs.tar        216314 KB

Using the tutorial here, I managed to download android 7 nougat ROM, and it boots and works file (up to now, sometimes shows a crash message, not sure where it's from)

I tried going into recovery mode again (it turns out after after following all the steps of the tutorial above, when I press power+home+Volume up to go to the recovery screen, the built in recovery screen has already been replaced by the CWM one for good, but I think it's probably not important for now) and when I go to the restore option, the restore process completes almost immediately (so I suspect it is failing for some reason, but I can't see any relevant log message)

Then the screen goes back to the CWM recovery menu, and if I select restart system it boots back into the nougat 7 ROM

How do I restore my phone to my previous state (that is, back to gingerbread) using CWM recovery backup?

Title: Problem restoring from a CWM backup


问:
How to upgrade SWM 8802 to Android 8.1
I purchased a SWM 8802 double din automotive head unit from ebay and I was under the impression that it would have android 7.1 installed as advertised. Turns out it actually has android 5.1, which has a tonne of limitations. I found a few forums online that contain some updates, but many members have bricked or bootlooped their units.

https://forum.xda-developers.com/android-auto/android-auto-general/failure-swm8802-t3750908/page4

https://www.needrom.com/download/swm-8802/

I am wondering if anyone has been able to successfully update the SWM 8802 headunit to android 8.1 and if so, what is the exact process?

More specifically I have a couple issues I need to resolve:

Bluetooth - I cannot connect to my OBDII bluetooth device or control any bluetooth settings as there are no options for this.

Touch Beep - The head unit beeps every time I touch it and there are no settings to disable it.

Any help would be greatly appreciated.

Title: How to upgrade SWM 8802 to Android 8.1


问:
Locked out of my device,
I used google find my device to locked my stolen Samsung galaxy j7 Prime. Its been recovered, but i can't unlock it because apparently, the password input bar wont take more than certain number of characters. What can i do please</p>

Title: Locked out of my device,