So for the past few days now my sms messaging on my iPhone 4S (AT&T) has been working incorrectly. Some problems I've been having are not receiving texts at all (people for sure sent the text however i did not receive it), my phone has not been sending messages although it does not give me any error messages and the sending bar loads fully then disappears, or I have been receiving texts extremely delayed (i received a text sent at about 7:30 this morning at 3:30 in the afternoon). I restored my phone and the problems were still occuring. So then I reset all of the settings. I'm not 100% sure these problems are still occuring after the settings reset though. Any suggestions? Should I take my phone into Apple or AT&T?