I often use the camera link inside of the text message and take a pic, and try to click use, then send.... It takes forever and the status bar at the top seems to freeze and then I get Not Delivered and a red exclamation point. I know I have cellular service in my city, it's enabled in settings, and I've combed the support sites seeing it is a common problem. Never happened on my 4, but since I came to 5 I've had this problem. Happens sporadically, but is annoying! Any suggestions?!