M-Cell Quick Fix
I noticed that my M-Cell isn't connection automatically. According to AT&T, Cisco needs to update something. Until then, the quick fix is to turn on Airplane mode for about 15 sec then turn it off and it should connect. I think rebooting the phone will also work, but the Airplane mode option is obviously quicker.
Also, if you leave the house, you will have to do the Airplane mode fix again once you come back inside. So it only stays on while your within range.
Certainly not what I wanted to hear from AT&T, but until Cisco does a software update, this will be an issue
So far the iPhone 5 is becoming more of a problem child then a joy to own. Between the signal being worse then with my 4, faster battery drain, and the M-Cell issues. I almost wish I hadn't sold my 4