I'm trying to add the unlimited data to my iPhone 4 right now, so what I tried doing was using my friend's iPhone 2G and sticking in my SIM card into his 2G via micro-sim adapter. Well, when I did, after I turn on the 2G it will say connect to iTunes. So I did, and then on iTunes it will say that the SIM card that is in the phone is not supported ( even though it's an AT&T sim card) The thing is, my friend already has his 2G jailbroken and unlocked with ultrasnow. So, anyone know how to get around this? I am really in need for the unlimited data.