Hey guys, I'm not sure if this is iOS 5 or the iPhone 4S. I'm running on ATT and since I upgraded when I go to send a text out i'll randomly get a Message Send Fail. It seems to happen when a text is coming in at the same time. I can't remember this happening before. But it instantly says Message Send Fail. It's kind of annoying because usually i'll send the text and lock the screen, only to open it 5 minutes later to see that it didn't send. Anyone else have this? Thanks for your help.