Indeed it turned out to be develop options, screen awake. What happened is yesterday morning I brought my phone back to t mobile to have them check out something else I was having a problem, and they did there "plug it into their computer and look for problems" thing. The rep must have turned on developer options and keep awake, and he forgot to turn it off. Thanks, GWaLL13. Nickanthony, it's under settings. Scroll down to develop options, and you'll find an option that says keep phone awake while charging. If that's not turned on, then I don't know what to tell ya