: Tap Touch and trace your finger along the grid lines. If they turn green, your touch sensor is working correctly.
: Use these to test the screen's ability to handle deep blacks and various brightness levels. samsung galaxy diagnostics screen tool fixer hot
The Samsung Galaxy Diagnostics Screen Tool is a essential built-in feature designed to help you identify and resolve display issues—such as dead pixels, touch unresponsiveness, or color distortion—without needing immediate professional repair. How to Access the Secret Diagnostic Menu : Tap Touch and trace your finger along the grid lines
: Tap Red , Green , or Blue to fill the screen with that color. This helps you spot dead pixels or backlight bleeding. samsung galaxy diagnostics screen tool fixer hot
If *#0*# doesn't work, ensure Auto Blocker is disabled in your Security & Privacy settings. Official Diagnostic via Samsung Members