My Note 3 was sitting on my desk in standby mode (hadn't used for over an hour) and suddenly restarted and now it's downloading something. Searched on the phone to try to find out what it's downloading and can't tell. Went into software update and it says I'm up to date (Silly me for thinking we'd actually be getting Kit Kat). Only had the phone a few weeks, came from iPhone, so I'm new to Android. What's going on?