Hello all - not sure if others are experiencing this issue with their Galaxy S3 on AT&T. I have not been able to determine a pattern when this happens, but periodically / intermittently, I stop receiving text messages and possibly even phone calls (so my girlfriend tells me ;-). Quite frustrating for her, and eventually me when she vents. If I restart the device, the notifications and messages come flooding in. Just wondering if anyone has had this issue and if there is a root cause determination and fix. Thanks, Rick 1-25-13: I installed and am trying out 'restart connection', 'fast Reboot', 'Signal repair' and the latest is 'Fresh Network' by McStealth which stops and restarts all my network and wifi connections..seems to work but would like to find an app that would do this automatically on a scheduled basis - I requested this functionality to McStealth..will see if I get a reply.