I've noticed that my cell phone (Galaxy S5) seems to last longer than most. I guess I don't use it as much as others? Recharge every night, answer a few calls and texts throughout the day, stream Sirius during work, surf the internet at lunch, play music during my workouts, and at the end of the day I still have 20%+ battery life. I carry a spare battery bank and charger just in case, but have never needed to use them...except one time when my flight was delayed for several hours and had nothing to do but surf youtube. How quickly do you go through your cell phone battery?