DeadPixelChecker is a free utility tool developed by Yukihiro Kondo for Android devices running on version 13.0 and above. It is designed to help users determine whether their device's LCD has any dead pixels. The app offers a full-screen mode that allows users to confirm any dead pixels on their device. Additionally, it offers multi-color support with 11 different colors to choose from, making it easier to identify any dead pixels.

To use DeadPixelChecker, simply launch the app and tap on the screen to change the background color. This will allow you to check for any dead pixels on your device. The app is easy to use and provides accurate results. Overall, DeadPixelChecker is a useful tool for anyone looking to check their device's LCD for dead pixels.