Ive been running stock again unrooted for a few days now with no problems until today. Battery drain is happening again. Have brightness set to auto and dont ave facebook installed anymore since ive noticed tremondous battery drain with that app. First 2 days battery life was very good. I had about over 4 hours screen on with around 30% left and close to 3 days no charge. Today i have less than 2 hours screen on 17 hours on battery and already close to 40%. It seems the longer i run stock the worse it gets. I really dont have much installed on my phone. Wondering if anyone has this happening to them.