Galaxy Diagnostics Screen Tool Fixer New! Official

This cycles through solid colors (Red, Green, Blue) to help you spot dead pixels or backlight bleeding. 2. The Hardware Menu: Secret Dial Codes

For a deeper, "bare-metal" look at your screen's health without the overhead of an app, you can use secret diagnostic codes. How to use Samsung Members Diagnostics galaxy diagnostics screen tool fixer

Open the app (download it from the Galaxy Store if you don't have it). Tap the Support tab at the bottom right. Select Phone Diagnostics . Key Screen Tests: This cycles through solid colors (Red, Green, Blue)