So I have a first generation iphone still under warrentee. I went to the apple store today to get an exchange because the phone's back housing isn't flushed. They said they could exchange my phone but they aren't allowed to let phones leave the store without being activated. I don't have an account with at&t thus I couldn't give them a sim card to activate the phone when they give me an exchange. Does anyone know of a way I can get around this situation? Is it possible to get a sim for a pay as you go plan and use that to activate the iphone?