Hi guys, a mate of mine has aquired a White 4S 64gb from the states he was playing around with it and got iot into dfu mode and thought he had broken it, so he bought it to me to sort out. Anyway he had an orange sim in it but he said it came with an AT&T sim (that he didn't have with him), what I need to know is if I use the AT&T sim can the 4S be activated with itunes in the uk