I just noticed under Settings > Battery Settings there is a "Stay awake" option. Does anyone know what this does? I had two guesses. First, I thought maybe it kept the lock screen from enabling when the screen was off, but I tested it and this isn't the case. Second, I thought it might keep the screen awake indefinitely, but this isn't the case either. Any ideas? It seems to be a pretty odd setting as the battery should only not be "awake" when the battery is dead.