Huawei Ascend MateThe Huawei Ascend Mate has a giant battery life of 4,050mAh which is way higher than others. The Galaxy Note 2 has a 3,100mAh battery and the Galaxy S4 a comparatively piddly 2,600mAh unit. The reason for using such a big unit is obviously provide the stamina to power the 6.1-inch screen.
With default settings, the backlight is set high and its intensive use will see the battery drain down in a day. However, if you dim the ordinary brightness then you'll get a solid day and a half, or two days with close management of your connections.