I would put a screen protector on that GS3,(I like Ismooth screen protectors)yes the gs3 has gorilla glass but it still scratches,my buddy has a pretty nice size scratch on his gs3 screen,other then that treat it like a new born baby and get insurance,if carrying it in your pocket always face the screen in towards your body and try not to put anything else in your pocket with your phone especially metal things like keys.aside from being extremely careful there is only so much any case or screen protector will do to protect the phone if it's dropped and lands just the wrong way.