Out of nowhere my 2 month old Note 3 is now shutting down as if the battery is completely depleted. In some instances, it's not. I'll plug it into an outlet, turn on the phone, and eventually I'll see 50% left on the battery. Other times the battery will drain like crazy. At first it was email suddenly checking non-stop. Deleted the email app but that didn't help. Pulled the battery, full charge, still the same things going on. Looks like massive Android OS drain too. Wondering whether I'll have to do a hard reboot, lose everything, and see whether the hardware is going haywire. Hope not.