Well I ended up calling AT&T and ordering a SIM card. When I asked if I could have a microSIM card I was told I could not use GoPhone on a iPhone. So I then just said to sell me the SIM ($5.95+shipping and tax = $6.5) and I would use it in another phone. If as somebody else on this thread says...

Thanks but I had been there before but for the life of me I could not find the place where you order just the SIM card, only prepad phones.

Thanks. Does anybody know how much a sim costs before selecting a plan? I want to compare store prices versus what people sure selling on ebay? Thanks

I looked around on the forums and while there were some threads about using Go Phone on an iPhone they seemed to be related to iPhones locked to AT&T. I have an unlocked phone (bought outside the US where they are sold unlocked) and plan to visit the US over Xmas. I don't want to roam on my...