I downloaded the tweak "Auto3G" which did work (was for iOS 5 only, figured I'd try). I uninstalled it, but I still have no service. Auto3G's purpose is to automatically turn off 3G at the lock screen to save battery. I've tried ##873283# (service update), tried resetting network settings, checked my settings/widgets for it, I don't know what to do. The last thing I wanna do is restore.