Hello, I've searched the forums to try and figure out my problem but couldn't find an answer. I've just got back from the states with a US iPhone, I have a regular 02 sim here at home that I figured I could pop in and then activate the phone with. Not so. I'm guessing I need a 3g sim??? I'm not looking to hack the phone, I just want to know what type of sim I need to activate the phone and how I go about getting one? If it's a case of walking into an 02 shop and asking for one that would be great. Any help is greatly appreciated. If I've missed a thread on this, if someone could point me in the right direction that would be ace. Thanks!