Mobile Phone Screen Tester is a free Android application developed by Wansy Android Developer that provides a simple tool for users to test their phone's screen. With different colors, users can easily detect dead or light pixels. The main menu also displays basic information about the phone, such as its model, CPU, memory, screen dimension, and sensors.

The app is easy to use and provides quick results. It is available in English and Traditional Chinese languages. However, the developer will not hold any responsibility for any damage, malfunctioning, economic loss, or legal matters caused by the use of this application. Overall, Mobile Phone Screen Tester is a useful tool for those who want to test their phone's screen for any dead or light pixels.