hey guys, got my new ip4 today and it's great. i'm hoping to keep my 2G iphone around and perhaps swap the sim once in a while so i can take the older phone with me rather than the 4. i cut out an adapter tray out of an old credit card and was able to get the microsim in the 2G but it says a diff. sim card is detected and need to connect to itunes. in itunes it tries to get me to activate with att. my 2G was already jb'd and unlocked, is there anything i can do so that i can use the one sim card on both phones? thanks.