Brightness is automatically set to the minimum, with a black – display overlay. This, for AMOLED screen devices, means almost zero battery drain while in LCDs, the lowest brightness will help a lot to save battery;
Then Go for battery saver is running, you can put the phone in your pocket, because the touch screen is disabled as hardware keys as well (only Volume and Power buttons still works);
+ You can lock the hardware buttons while the application running it!
+ Double tap to turn on the screen!
+ exclusive boot methods: persistent notification or ChatHead!
+ You must manually increase the standby time of the screen, battery saver Go to keep the screen for you while you catch a wild animal again!