My iPhone 4S is under AT&T, and I just returned home from deployment last night. My iPhone has been on airplane mode for 6 months. While I was away, I installed iOS 6b4 (I have a legit developer acct.). When I made it back stateside in Atlanta, I constantly lost my data connection. Happened again when I flew into Dayton. Then last night I installed GM, and today I lost all reception, data and phone. The only thing that seems to resolve it is a hard reboot. At first I thought being at the airports were causing it, because its normal to have lousy reception there But today's was in a grocery store and it never came back, even after I left the store and went home. So, being that it occurred over the beta4 and GM, this might not be a iOS 6 issue. However, nothing says it isn't. Could this problem be related to having my iPhone stuck in airplane mode for 6 months?