A likely fix, unless there is on outage in your area would be a hard reset. Just hold your power button and volume down button until your device power cycles, or just turn it off and then back on. Failing that *611. Good luck
Might be a Small Outage! You could try Pulling the Sim For 2 min. an then re-installing it Just remember if you pull it Watch the Gold area of it as it is Sensitive to Static Electricity & the Oils on your Fingers..b33
I trust that your service is back to normal by now. Did you try reprogramming your phone by pulling SIM card http://goo.gl/vW6LV
as suggested by B33?
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