Remove built-in apps from ROM

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A lot of people suggest removing built-in apps by deleting apk files in /system/app in terminal (su) or using root explorer. However I wonder whether it is a clean uninstallation. I know apps create data and cache in /data/data, /data/dalvik-cache if no other locations. Simply deleting apk files does not remove the data and cache, and the entries in packages.xml. There will be error when running fix_permissions.

Can anyone suggest a proper command to fully uninstall built-in apps?

Originally Posted by sagementor

A lot of people suggest removing built-in apps by deleting apk files in /system/app in terminal (su) or using root explorer. However I wonder whether it is a clean uninstallation. I know apps create data and cache in /data/data, /data/dalvik-cache if no other locations. Simply deleting apk files does not remove the data and cache, and the entries in packages.xml. There will be error when running fix_permissions.

Can anyone suggest a proper command to fully uninstall built-in apps?

I finally find the proper way to uninstall the system apps.

Step #1 - Find the package names of the apps (e.g. IM.apk=com.android.im)
In console, type
su
pm list packages -f

Step #2 - Delete the apk files from /system/app
In console, type
su
mount -o remount,rw /system
rm /system/app/IM.apk

Step #3 - Uninstall the package
In console, type
su
pm uninstall com.android.im

mount -o remount,rw /system

mount -o rw,remount /system

Those 2 ways are found in numerous places
around the internet. Each one of those
does NOT accomplish anything in terminal.

I kept receiving a usage message explaining the syntax....

After searching, trying, searching, trying...
I just decided to try this, and it worked...

mount -o,remount rw /system

Just thought I would share.
I'm running Dwang's latest, if that matters to anyone.

This works great. You don't have start fresh-n-clean with your device by reinstallaing original rom, just get rid of the stuff you don't want that your service provider wants you to want.

how to install apps in a phone which just rooted and contains official rom?