Okay guys so I was dealing with this problem all last night and ATT and their amazing (sarcasm) service failed to help me AT ALL! I ordered an iPhone 4S for a cross upgrade with my brothers line. So yesterday we got the phone and nothing seemed to work because the lady at ATT had us change the number too early so we can't get past activation because it is the wrong number that matches up. We already tried to restore a brand new version of the OS but that didn't work. What I want to know is if there is some possible way to get around the initial activation process that requires the number initiated for the phone and the number on the sim card. Or something that will reset that activation number on the phone. If you have any ideas please let me know! Thanks a lot!