The battery life is kind of OK. I am using Desire 830 dual sim version for two month and it normally left 30~40% after work. But I am not use it a lot during work time, I will keep using it for about 2hr before charge and it normally left 10% battery life. If you want to use it outside and without Wifi, you better keep the battery saver mold on. It will max the screen brightness when using camera, I would suggest bring a battery pack with you if you expect to use camera a lot. well it’s so good phone