Hi, I recently had my iphone UK iphone 3GS stolen (was still waiting for my insurance to be activated so wasn't yet covered!) I can't live without it!! Would like to buy another. Can't afford the Iphone 4. I will be moving to the US in 6 months so wanted to know if I purchase a new UK iphone 3GS would it be compatible with a US phone carrier as I would be looking for a new contract when I get there. Would i be better buying a US iphone that could be compatible with my current UK contract? Does that exist? Any advice would be great!! Thanks!