So I noticed that yesterday, for some reason my phone's "up" time was much higher than its "awake" time (which is how it's supposed to be) and my battery life was excellent. This morning, however, I'm finding that the up time is only about 10 minutes more than the awake time, and my battery is decreasing a lot faster. I'm not using the phone at all, and I don't have any more apps running in the background. I'm just curious, how can I "force" my phone to go into sleep mode?