Question and Answer about Android from Stack Exchange network.

After update into Slot into B, is there any way to mirror the contents of B back to slot A? So that both slots have the same versions.

How do copy complete updated slot B back to slot A efficiently?

I'm trying to factory reset a Galaxy S20 because I've forgotten to add MDM in the intial setup and as far as I know you can't add this later.

To do the factory reset I've done Settings > General Management > Reset > Factory data reset. Then tap Reset and Delete all. But it then asks me to confirm my Samsung Account which it somehow can't do, because I always get a loading icon which fails after some time. Then it asks me for the password of my Samsung Account and again goes into a loading icon which also just stops after some time. I don't get any error message.

There's also the option to send a confirmation e-mail, but this also leads to the loading screen but after some time I get a little pop-up telling me there is a network error. The screen here stays white and I need to use the back button to go the confirmation screen of my Samsung Account.

I do have internet access on my phone, because I can open websites with Chrome. I'm using my home Wlan Network to connect to the internet.

I didn't find any solution to this problem with Google, just the normal documentation from Samsung of how to factory reset a phone, which doesn't work for me.

Several times a day my Android phone (Samsung Galaxy A51, Android 11) is showing this toast

We're having trouble connecting. Check your network connection and try again.

If I stay offline this toast will return every few minutes. How can I find out which app is posting these toasts. And most importantly how do I get rid of them? Long-pressing the toast doesn't show anything.

So i forgot the PIN number on my old phone which was not rooted, had no recovery software (Cwm, Xrec, etc.) installed on it, and has usb debugging and auto-mount disabled. We don't know the google account associated with the phone. Basically all I have is the phone and a usb cable. Is there a way to get the user data out of it? Adb won't recognise the device btw. I do apologise if it's a stupid question. The phone automatically connected to the wifi, and I'm on Linux, if that helps. But I managed to get into recovery but adb only recognises the device in sideload mode. The files inside the phone is extremely important to me because it contain photo of my family member that were passed away.

Phone: Vivo V7 Plus

I wanted to try brute-force the PIN with program but unfortunately the phone will cool down for 7000 second (3hours+)

Info My phone model: Vivo 7 Plus USB debugging: Not turned on

I have Lenovo YOGA Tablet 2 830LC X86.

Rescue and Smart Assistant tool is a software to work with this tablet.
When i activate USB-Debugging in tablet i face the error below in Rescue and Smart Assistant tool.

Unauthorized is because after activating USB-Debugging mode in tablet and connecting my tablet to PC, there is no popup asking me if i want to trust this PC, which i have to agree (permanently).

By deleting the adbkey file found in C:\Users\[Username]\.android folder the permission dialog did n't appear on my device.

What should i do to fix this issue?

Edit after comment :

1. I am using USB charging cable.
2. I have windows 7
3. USB OEM driver for Lenovo > When i connect lenovo tablet to pc a pop up shows up on pc to install usb driver.
   So i installed it & after that i can see tablet folders.
   But i did n't install any other things.
4. Have you reset the USB authorization on the device too (usually inside Developer options) > Is this your mean revoke USB debugging authorization? If yes i did it several times.
5. Is the device detected by ADB (call adb devices on command prompt)
   I found a adb.exe in this path : C:\MagicPlusMini\app
   After enter adb devices command it founds : Baytrail6F284E37 offline
   I found another adb.exe
   Here is the command prompt :
   C:\Program Files (x86)\Rescue and Smart Assistant>adb devices
List of devices attached adb server is out of date. killing...
daemon started successfully
Baytrail6F284E37 unauthorized

I cannot find the setting for auto space after period when I'm typing a message on my Samsung S21.

Anybody knows where it is?

*hope it's not part of the autocorrect, because I have that turned off, because it's making a mess in my language

I save webpages for offline reading by opening the three-dot menu icon and tapping the download icon up top, which will download a version of the page. I also take regular backups on USB drives.

Now if I wish to view these HTML pages on my computer's Chrome browser, how do I do the same?

These files do not have any file extension. I tried adding .htm to them and then trying to open but was not successful.

All help is sincerely appreciated.

Thanks

I purchased a used Nexus 6P on ebay to replace my current 6P, because the camera has failed.

The seller indicates that the new phone has been factory reset, but I'd like to be sure that there is no spyware hidden deep in the system.

On a desktop machine I would erase the hard drive, install the operating system of my choice, and be confident that most reasonable vectors of attack were removed. (Sure, he could've hidden something in the firmware of a device or whatever else, but I'm not worried about that level of sophistication).

I'm not sure how Android factory resets work, but given that the phone's memory is never completely erased, I worry that a malicious actor could have put bad software into the image that the factory reset restores from.

Is this a valid concern? If so, is there a way to address it and be sure that my phone is not sending all of my information to some one else (other than google)?

I am using the program scrcpy in order for me to control my Android phone from my PC.

It all works just fine with showing the Android screen, but I want to open an app from within the scrcpy console box.

I have not seen anything on Github about a feature like this - just the ability to add or remove an app.

Am I overlooking something?

I want to transfer video files over the internet. I intend to reduce a video size of 100x MB to below 10 MB. I tried some apps, but they reduce the size down to 10x MB, not below 10 MB. Also, their video qualities are not acceptable.

Is there is any app that can produce a video of less than 10 MB with high quality?

UPDATE

My videos are around 5 minutes long. On a desktop computer, I use HandBrake software with these settings to produce an acceptable output:

• Dimension 360 width by 640 height
• RF quality 33
• FPS 15
• Video codec H.264 (x264)
• Audio codec AAC stereo with 24 bitrate.

With the above settings, for example, a 700 MB video would become 7 MB.

I don't know how to set these values by any Android app. Is there any app for it? I tried YouCut, but I couldn't find any such settings.

I just purchased a new Moto G Power (Android version 10) and replaced my old iPhone 6s backup phone. When I put the Sim card in, everything worked except incoming SMS. Outgoing SMS worked fine, just not incoming. I figured it might be related to the Apple account and iMessage, so I found a link that would disconnect from iMessage. I saw on a website that it might take a few hours to take effect, so I was patient about it.

That happened yesterday afternoon (around 3 PM). It's quite a few hours later and I am still not receiving incoming SMS on my device. When I put the Sim card in the iPhone messages come in, and they come in as SMS rather than iMessages. So I'm not sure why it's not going to the Android device.

Does anyone have any recommendations for next steps?

For example we typically get 192.168.1.XXX addresses from a home router, but an android phone gives out addresses on another 192.XXX which makes it problematic for connecting devices with each other in the same house.

Why does it do that: and if it's only for security reasons: can it be reverted to use the home router's subnet?

I made an outbound call to a business today and the caller ID displayed was that of a completely unrelated business in a different geographical location (so would have a different (UK) area code).

Does Google perhaps pull this data from business profiles on the search engine and how can I report the inaccuracy?

There's a way to manage these system folders?

I am struggling with some folders that are automatically created at boot, by system on the SD card, but I don't want them!

The folders are especially the following: LazyList, LOST.DIR

Into the latter I have found several, also big, files, and I don't want to waste the storage, maybe, with duplicated or deleted files. There's a way to better manage, or even better, completely avoid it?

Thank you... as always!

Question: All data-recovery solutions I can find on this site are from 6 or more years ago. Similarly, commercial solutions (such as Dr. Fone) are only good up to android 4. Are there any tools or techniques that still have a reasonable chance of success on Android 11?

Background: I have an ASUS Zenfone 6 that I recently updated. After the update, I was asked for the lock pattern, which I somehow forgot (I usually use the fingerprint scanner). Without bypassing the lockscreen (or somehow reactivating the fingerprint without the lock pattern) the only option I see is to reset the phone (which I understand will delete the user partition). If it is possible to create an image or recover data after the factory reset, there is at least a chance I can recover the contacts and a few months worth of photos that defaulted to internal memory after a previous update. I know that android has encrypted the user partition by default since Android 5, so maybe recovering data is no longer possible.

Perhaps a successful method would include rooting the phone, although I don't intend to keep it rooted. At this point any method is better than no method.

I have two smartphones running Android 10 and 8, The ADB is enabled for many proposes. Generally some vendors have been shipping products with Android Debug Bridge enabled. But it seems that enabling ADB have many security risks according to DoublePpulsar blog: Root Bridge — how thousands of internet connected Android devices now have no security, and are being exploited by criminals.

This is highly problematic as it allows anybody — without any password — to remotely access these devices as ‘root’* — the administrator mode — and then silently install software and execute malicious functions.

Does the latest Android releases are secure against the ADB vulnerability?

I've rooted my OnePlus 6 yesterday. To do so, I followed this guide:

Root Your OnePlus 6 with Magisk — A Beginner's Guide

TWRP version: 3.5.1_9-0
Magisk version: 22.0

I also installed the Magisk app on my phone

Now I've edited my hosts-file (needed to change some permissions to be able to modify this file ) to block some sites. I've restarted the phone once successfully, but now the phone will not boot anymore. When I power on, I see the OnePlus logo very briefly and then it gets stuck on the "bootloader is unlocked" warning for a long time. It then goes on into fastboot mode. If i press start from there, the process repeats. If I press recovery mode I still get into TWRP, but rebooting from there also repeats the process and does not boot up my phone successfully.

I'm not sure, but I don't think editing the hosts file is what caused this? Shouldn't I be able to edit this file without bricking my device?

Any help on what happened and how I can fix this bootloop without wiping/reinstalling my entire device would be greatly appreciated; I don't want to lose all my settings =).

I want to mine sugar on my Android phone. Can someone help a simple complete script, especially to complete method 1 or 2, whichever works.

METHOD 1

Installed F-Droid and Termux

Commands

pkg install automake clang git vim
press y to continue

clone git https://github.com/decryp2kanon/sugarmaker

When it's done, I enter

$ cd sugarmaker/
-/sugarmaker $ ./autogen.sh

it says

bash:  no such file or directory

METHOD 2

These two methods I tried each of them on both phones. On method 2, when I get here, it keeps saying error on Huawei Y Pro phone and Huawei P20 Lite.

pkg update
press y to continue

pkg upgrade
press y to continue

pkg install git

pkg install wget
press y to continue

pkg install proot
press y to continue

git clone http://github.com/Neo-oli/termux-ubuntu.get

The problem start here on P20 Lite

-$ cd termux-ubuntu
-/termux-ubuntu $ ./ubuntu.sh

It says decompressing Ubuntu image, but this does not look like a trz archive.

Making start Ubuntu executable. You can now launch Ubuntu with ./start-ubuntu.sh script.

And it shows code 404 like the link to the image is not working also.

After installing an OTA update my phone bootlooped so I made a TWRP backup and did a clean install of the latest version of the ROM I'm using but restoring the backup using TWRP bootloop my phone again. I only need to restore one or two apps. I know that I can extract the files by adding .tar and opening them with WinRAR. Now my question is : What files I need to move from the backup to my phone to restore the data of a single app manually?

• ROM : Pixel Experience Plus (Official)
• Android : 11
• Magisk : 22.0

I tried copying the data from /data/data/com.exemple.idk and replacing the new ones in my phone but that doesn't seem to work. Is there anything else I need to copy from the backup files?

This news article describes the roll-out of Google's new scheduling feature for Google Messages. On my own phone, I briefly had the opportunity to use the feature before it inexplicably disappeared. The news article seems to suggest two things: first, that the brief opportunity to use the feature might have been part of a test prior to the general roll-out, and second, that "schedule send is rolling out as a server-side switch ..."

What exactly does that last part, about server-side switch actually mean. I understand the general principle of client-server relationships with things like using an email client on my PC connected to my ISP's email server, but what server is being talked about in connection with Google messages. Surely they're not talking about something that requires cooperation from every ISP!?