I just recently got the S3, and I'm very happy with it! I only have a small issue with it - it has problems staying connected to my carrier while I'm in school, specifically the cafeteria and rooms without windows, where 90% of the time I have no service, and the rest, it stays at 1 bar (interestingly it occasionally spikes up to full bars for a few seconds, without me moving it). Would there be any practical way of improving signal strength? Thanks! Edit: extra info, I am using the Bell LTE version in Canada in a region which supports LTE.