I've recently JUST unlocked my iPhone 3G. I've been trying to do this for a while because, unfortunately, I hate at&t. So I've gotten it all unlocked etc... Now, I have no idea what to do. I took the original sim card(AT&T sim) and replaced it with another one(T-mobile sim). It recognizes it but like in the original sim card, it still says "No Service" in the lop left corner. So as of now, I don't know what to do so far. Maybe someone who is experienced in this and/or unlocked their own iPhone 3G could possibly give me advice and/or tell me how to activate it/set it up with T-mobile. Thanks.