Save battery and time with Save battery and time with Black Screen, the app that lets you display a full-screen black screen whenever you need it. With reduced screen power consumption, you'll enjoy longer battery life and a faster wake-up time.

Features:
Save battery and time with full-screen Black Screen
Reduce screen power consumption
Enjoy longer battery life and faster wake-up time
Simple and easy-to-use interface

With Black Screen, you can easily enter the full-screen Black Screen by simply opening the app, and exit by swiping up from the bottom edge of the screen (swiping down from the upper edge of the screen may be required to exit on some Android versions). This app offers a simple and easy-to-use interface that anyone can use.

Download Black Screen now to start saving power and time with full-screen Black Screen! For more information, visit our website at https://hanchanglin.wixsite.com/website