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Screen Test is a small but powerful tool that will help you detect common problems on your cell phone screen. Many times smartphones come from the factory with problems on their display or with the type they begin to show dead spots or pixels, which can be easily detected with this application.

We can also use it when changing the screen of a broken mobile and it will help us to know that all its colors and tones work correctly.

If we detect any stuck pixel we can use the screen repair tool that will start to make different flashes in colors and frequencies that in the vast majority of cases manage to unlock those frozen cells.