I just loaded an app from Xiam Technologies Limited, a Qualcomm company. The app is "Snapdragon Battery Guru" and it is worth reading about, especially if you are not satisfied with your battery life. As I have said before, mine is excellent so this is just an experiment for me. The app is compatible with the Maxx family since Qualcomm makes the Snapdragon processor in out phones. I'll let you know how it works, it takes three or four days to learn your habits on the phone, and then apparently does its thing behind the scenes. Free and worth a try if you are not satisfied with your battery life. The name of the app was posted on another forum.