Black Mirror: Simulate YouTube background playback descripción

Black Mirror will cover screen by the black overlay.
Help save battery when running any tasks on the background which cannot turn off screen.

Why Black Mirror can save your battery?
- It adjusts screen's brightness to minimum
- It covers screen by black color, this will save battery maximum, especially on the devices use AMOLED display (such as Samsung smartphones).

How to use Black Mirror?
1. Open the app and turn on it
2. Open any tasks you want to run on the background, such as Youtube, Games, ...
3. Click on Black Mirror on notifications panel

Hope this app helps you save battery while using smartphones :-)