My Note 4 experiences excessive heat (overheating) in a short period of time under normal usage (no heavy data games) & battery drain after the Lollipop update, please help! I've tried safe mode and the heat still occurs, so I think third party apps can be ruled out. I've tried one internet tip to pull out the battery and SD card and insert the battery leaving the SD card out - still no progress.
I also would like an answer to this question. What is the phone doing that now that takes so much battery? It's not something that I am using. Usually about 8% overnight when I'm not even using the device. It was 1 or 2 % on KitKat. And good point, no 3rd party app advice please.