Yesterday my iMessages stopped going through on my MTS iPhone 5. For some reason my iMessage option turned itself off and I had to turn it back on. Now the screen lock button doesn't work until the 3rd or 4th push, and then when it does work and the screen goes dark, it will light back up (still locked) and blink on and off. Then it will say swipe to turn off at the top and then an X at the bottom to cancel, all on it's own! What is going on with this thing.