Up until recently, I could go through the whole day and still have about 40% battery when I plugged in at night. In the past month or so, I started barely making it through the day. Last night I was at 5% when I plugged in. One note: I got my first new car with bluetooth in the last month, so I have the blutooth on at all times. My wife has the S6 and always has her bluetooth on and has 40% of the battery on at the end of the day. Could it be a recent Google update? Matbe the bluetooth? Thanks for the help.