Android Enthusiasts Stack Exchange is a question and answer site for enthusiasts and power users of the Android operating system. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Suppose the following situation:

End-user have a unroot phone. (the phone is not rooted).

End-user install a app, which actually is a System app and is installed in the /system of the phone.

So, does a factory reset remove these app?

(In the first place, can end-user install a system app onto a unroot phone?)

share|improve this question
up vote 3 down vote accepted

System apps can't be installed without root. Only updates to existing system apps can be installed, and they don't actually reside in the /system partition; the original app is kept there, which allows you to uninstall updates separately. So a factory reset will remove any updates, but not the original app.

share|improve this answer
Can I assume that the original app that you are referring to are those apps that is already inside when it is inside the box (or before I unbox)? – Jack Oct 30 '12 at 4:51
@Jack Yes indeed. – Matthew Read Oct 30 '12 at 22:11

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.