ok guys here's my problem. before i had a jailbroken iphone running 4.2.1, i decide since ios 5 came out to un-jailbreak and run ios 5. i did so and update to ios 5 and now every so often at least once a day my phone drops all bars and says no service. i have restored it several times...even as a new phone. it recognizes the carrier, but it just loses service for no reason. it works for about 12 to 14 hours then it will mess up. some times i even get an activation required message after i turn it off. Anybody got any help i have no idea awhere to go from here except get a new phone.