How to unistall all inbuilt system app in android os want use only my app on device? - General Questions and Answers

I want to change the bloatware of android phone and want use only my app on device

You can't remove (and shouldn't!) remove all system apps since your device will bootloop or start force closing. If I were you, I'd remove as much as possible and then get a launcher and lock from getting access to other parts by passcode (xposed modules and other things available for this).

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Adware problem even after rooting

I have rooted my device and deleted some adware virus but i can't remove it fully. some apps like BCCcutedrivers,coolactivesticks, if i delete these apps its instantly installing again and on every reboot apps like 360 security,mobiquick,wifi key master keep installing even when mobile data is off .. How do i find the source of these apps ? And remove it permanently
My first idea is maybe you can remove the apps manualy with a root explorer from "system/app/ " or "data/apps/"

Is there any way to install an app in twrp recovery mode?

Earlier today I successfully rooted my phone and uninstalled a bunch of bloatware. Foolishly, I also uninstalled the Samsung keyboard (figuring I only use the Swype keyboard) which I now suspect it is used to enter my pin when turning the phone on. Now I can't get past the pin entry because the keypad does not show up. Is there anyway to reinstall the app in this situation?
trusko1 said:
Earlier today I successfully rooted my phone and uninstalled a bunch of bloatware. Foolishly, I also uninstalled the Samsung keyboard (figuring I only use the Swype keyboard) which I now suspect it is used to enter my pin when turning the phone on. Now I can't get past the pin entry because the keypad does not show up. Is there anyway to reinstall the app in this situation?
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You can get a copy of the .apk file and then boot to TWRP, then use adb to sideload the .apk to /system/app or /system/priv-app (wherever it was at before you deleted it).
Or you can reflash your stock firmware or custom ROM if you're using one.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE
I flash magisk.zip but it is normal app not system app
Magisk is a 3rd-party-app. Take note that a system-app is necessary part of Android OS. And Magisk isn't.
jwoegerbauer said:
Magisk is a 3rd-party-app. Take note that a system-app is necessary part of Android OS. And Magisk isn't.
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Not quite right, when a 3rd party user app is installed or pushed to system, it then becomes a system app. The term "system app" refers to any app that is in the system partition, it has nothing to do with whether the app is a necessary part of the OS. Stock system apps, or, at least, "some" of them can be considered to be necessary parts of the OS but this isn't completely true because a lot of devices come pre-installed with non essential bloatware apps in the system partition. These non essential bloatware apps can be removed via root or by adb on non rooted devices because they are not necessary parts of the system.
For me a "system app" is - as already mentioned - an app that comes pre-installed in Android ROM's one of the partitions /system/app or /product/app or /product/overlay or /vendor/app, is a "system app" an app that is intended for the functioning of the Android device.
Your admission to this view of mine does not change my opinion.
private app is also a system app but seems to be an add-on. and i flashed the zip but it was not set as a system app, it seems the zip is not related to install like the system in twrp, and twrp mounted the system but couldn't delete any folder in. rooted but so bad!

Could you help me with a question about ROM?

Hello!
I have a question about ROM, is there any that is without the unnecessary applications of Samsung, Google etc, example: Samsung Members, Samsung Connect, VR Gear, Samsung Health etc, a clean but non-root rom, why use bank applications and cards.
Sorry for the question, I always used cell phones with root, but I did not use banking applications. Is there a solution?
The touchwiz based ROMs like SuperMan let you choose what Samsung apps and Google apps to install during the flash process, so you can just untick the ones you don't want. There's also a debloat script floating around somewhere which removes unnecessary apps.
You can also use root, and a ROM with Magisk which hides root and passes safetynet so long as you don't use Xposed. That'll let you use bank apps.
Beanvee7 said:
The touchwiz based ROMs like SuperMan let you choose what Samsung apps and Google apps to install during the flash process, so you can just untick the ones you don't want. There's also a debloat script floating around somewhere which removes unnecessary apps.
You can also use root, and a ROM with Magisk which hides root and passes safetynet so long as you don't use Xposed. That'll let you use bank apps.
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Thanks for the answer, I was an old user of my old and good Xperia Z2, rooted but now with the S7 I'm lost, I just wanted to have a way to not have unnecessary applications.
I'm finally not needing something that needs root, just like it used to.

How to remove/disable a system app without root?

I have samsung m21 not rooted. I tried to remove and disable Samsung Game Optimizing Service via ADB, it saying success when i entered the remove command, but in phone it doesn't removed. Also i try disabling via ADB too, it also giving another success message but app not disabled in phone. I tried to remove an random app downloaded from gplay store, and it removed perfectly (btw i removed some system apps in same phone via adb before). I searched this issue and i saw some people have same problem. I tried to disable that app from Package disabler pro (samsung) and CCSWE app manager (samsung) but M21 doesn't have Knox, so that method didn't worked too. Game Optimizing Service app is limiting your fps to 40. I dont want to root my phone. I want to remove, disable this app without root. How can i do that? Please help me. Thanks in advance.
Paramez said:
I want to remove, disable this app without root. How can i do that? Please help me. Thanks in advance.
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Removing without root rights is NOT possible, but disabling:
App Freezer for Android - APK Download
Download App Freezer apk 1.0.6 for Android. Freeze unwanted app or package on Android (Samsung, Sony, Xiaomi, Huawei, etc)
apkpure.com

Backup app data without root

Hi there, I'm working on a project.
I have below questions.
1. Is it possible to backup app data without root and without adb as app doesn't allow backup. I don't want to root my phone and i don't have any custom recovery.
2. If above question's answer is "No" then is it possible that i sign and update mod of an app on top of already installed original app from play store. I don't want to uninstall previous app i just want to update app with different signature. My device is not rooted and i don't have any custom recovery.
Thanks in advance
An app's data is stored either in /data/data/<pkg-name> or in /Android/data/<pkg-name> what depends on Android version and/or app. To successfully backup these data Android OS must be rooted, AFAIK.
self-signed app will treated as other app, so this is not possible. some apps however could be downgraded to older version with adb backup allowed (for example WhatsApp)
starting with api level 30 the flag android:allowBackup="false" seems ignored
https://www.xda-developers.com/android-11-force-app-local-backup-restore-handicap-cloud-backup
starting with api level 31 different flag android:debuggable="true" is required for adb backup
https://developer.android.com/about/versions/12/behavior-changes-12#adb-backup-restrictions
so your only chance is find the proper OEMs D2D transfer app (like Samsung Smart Switch for Samsung, Phone Clone for Huawei, etc.)

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