I recently purchased a thunderbolt, approximately a month and a half ago. It was working completely fine until about a week ago, when I started having issues with not receiving text messages. It can be resolved by resetting the phone, but there's no way to know whether or not I need to do that unless I'm in the middle of a text conversation and I suddenly stop receiving messages. I know my messages are going out because I can still communicate through facebook and other non SMS or MMS applications, and all other functions work properly, but this happens once or twice a day, and is extremely frustrating.