Tried the below solution some ok recommended. Works like a charm for my Samsung galaxy S3. Spent couple of hours with ATT and BestBuy geek squad. No one could resolve the issue and swapped with a new phone. Started to happen on the new phone as well It was quite annoying. Below resolution just did the trick. thanks a bunch.
ok, might have a solution, still testing. but it may have something to do w/ your google account and it syncing the "internet". go into accounts/sync then uncheck "sync internet" under your google account. we shall see...