For 2 weeks I've getting a huge battery drain. It got so bad that when I make calls the battery gets very hot. Why is this happening? What app can I download to find out which apps are using up my battery the most?
Plug phone and let it charge to 100%, unplug it. Once it hits to a low percent open app and check around. Check kernel wakeups, CPU States. You will see if an app doesn't that your phone go to deep sleep.