It won't go to battery life, it'll go to higher performance, more screen brightness, additional sensors, more allowed background processing by apps, more GPS ch

It won't go to battery life, it'll go to higher performance, more screen brightness, additional sensors, more allowed background processing by apps, more GPS check-ins, more chatting with your connected devices like the Watch, and more awareness of the radio-transmitting devices around you. There's a LOT more our phones could be doing if they had 2x, 3x, 10x battery life, that would eat up every bit of juice within a typical day.