Just today my note 7 started draining very fast. I've only had it a week. I absolutely love this phone btw. Its my new addiction. I'm not very tech savy so I came here for suggestions.
Yeah the battery on mine is awful, drains too fast and as far as "rogue" app I close mine out frequently via the new battery app on the phone. Doesn't do squat so i 2nd that as I will pick up a new note 7 myself.