OP, what level did you put the screen brightness at? Screen brightness makes a big difference to the battery drainage. The reason why saying this is because I have to say I don't think the 10 has great battery life either unless screen brightness is minimal. But my wife's note 5 has reasonable brightness and let's longer than my 10. HTC maybe need to move to AMOLED?Okay, I got this and a 6s just trying to see how it compares, the htc is unlocked straight from htc.