Hi Everyone, I need some advice and would be grateful to anyone who could help me out. I live in Germany and have a friend here who would like to purchase an iPhone 4 unlocked (so that he is not bound to any contract). I will be travelling to the U.S. in a few weeks and he is considering having me purchase an unlocked iPhone for him there, as it is about 25% cheaper than here in Germany (but still not cheap - around $650). My question is: how would that then work? Could he simply insert a German SIM card into the unlocked iPhone and voilá - it works? That sounds too easy to me. How, for instance, would that work with data (i.e. Internet, e-Mail, etc.)? Pardon my ignorance, but I have null experience with unlocked phones... Thanks in advance for any assistance!