My battery life has been crap these last few days. It used to last me at least the whole day. Now after an hour of use, it went from 100 down to 65. I have clean master installed and my stats say its mostly the screen which is using the most battery. And my brightness is down as low as possible. Not sure where the drain is or maybe its on the end of it's battery life. I just don't wanna fork over a bunch of money for a new flagship phone, cause I'm cheap. :-X Thoughts?