Through the application, you can check your phone screen if it is damaged or not
By observing the color in each interface, you will know the damaged part of the screen.
The application works without the need for the Internet
![[4K] White Level Screen Monitor TV Test Pattern - Calibrate Contrast for 10 hours screenshot 4](https://i.ytimg.com/vi/VJDVvYC0-aU/mqdefault.jpg)
9Apps 4.9
