Ok, so I have noticed something strange that I can't figure out.
Let me set up a scenario:
I read an ebook on my kindle app before I go to sleep. When I am done reading, I don't clear out of the Kindle App - I just lock my phone. I then plug the phone in to charge overnight.
When I wake up and unplug my phone, I don't take it out of lock until I get to work. When I finally check the phone at work I find my battery has drained down to 80% in 1 hour and 55 minutes. The number one drain on the battery is the OS according to my battery statistics page.
I haven't used the phone once since I unplugged it when I woke up. Why the hell is my battery down to 80% if I haven't done ANYTHING on it? Even stranger is I have smart actions set up to turn off everything but my ability to receive calls and texts if the phone is locked, not charging, and not moving.
I am convinced it is the Kindle App. I don't use it to read before bed, the phone does not have this battery drain problem. Has anyone else noticed this?