Andyroid - a few questions I haven't managed to find the answers to through reading the OmegaROM website.
Q1 First (possibly silly) question... I use linux. I have various distros installed on various PCs and laptops. Most are set up with me (andy) as a normal user. When I want to install software I log in as root (or use su or sudo) then revert back to a normal user afterwards.
Does a rooted Android phone work like this? or does it run with root privileges all the time?
Works in pretty much the same way, except you don't have to login/logout as a different user.
If an app wants root access, SuperUser (su) will bring up a dialogue box asking the user if root access is allowed or not.
Q2 - how can I tell if an S3 is rooted?
CPU-Z from the Play store will give you all the system info you need.
Q3 - is the S3 I bought off you still rooted?
No, It was reset to factory as per your request.
Q4 - does installing a stock ROM revert the phone to 'not rooted'?
Yes, however it does not reset the hidden binary counter that Samsung use to find out if you have been playing with it.
To reset the hidden counter, you need
Triangle Away and
SuperSU Pro