To Perform a Pattern Test on the Touchscreen
The pattern test allows you to visually check the performance of the touchscreen as it cycles through a number of patterns and colors.
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Press HOME > More > Diagnostics > Panel Diagnostics > Touch Screen > Test Pattern.
The touchscreen cycles through a number of test patterns of different colors.
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Confirm that the touchscreen is showing the pattern correctly, and that the colors and brightness are consistent.
Tip: You can tap the screen to pause and resume the test.Tip: You can exit the test early by pressing any key on an attached keyboard and pressing Exit.
The test will repeat three times and then exit.