what is the difference between /system/app and /data/app? [duplicate]

Question

Possible Duplicate:
Android System App 101

what is the difference between /system/app and /data/app? Is there some different permission in the two directory.

Answer 1

Yes, the is different in term of permission. System app get more permission compare user app. For example: system app could do gps on/off toggle but not user app.

System app = app installed in /system/app User app = app installed in /data/app

Answer 2

/data is what is referred to by users as internal memory. This is what runs out etc. You can manually update/market update the apps in here.

/system is also internal memory but a different partition. This is where the rom is.