the battery life on the S3 is ok, not really great but not cheap. but the interface and scrolling thru running apps is very very smooth, phone just glides. im impressed with it as i get to know the phone an ICS its all very simple an easy. im glad i got the white one, my brother got the blue one which looks black but it sure attracts fingerprints. what are some must have apps? i got that swift keyboard 3 an thats such a great app.