Inspect the display closely for "dead pixels" (dots that stay black or a different color) or severe discoloration.
Once you enter the menu, you will see a variety of testing options. While the Samsung Members app explains each test clearly, the *#0*# dialer menu uses brief tech terms. Here is what the most critical tests actually do:
These videos rapidly cycle pure primary colors (Red, Green, Blue) at maximum brightness. galaxy diagnostics screen tool fixer
With One UI 6.1 and newer, Samsung has moved diagnostics into . The old *#0*# menu is deprecated but still active for legacy support. However, the "stuck" bug persists.
Launch the app (install it from the Galaxy Store if necessary). Go to Support: Tap on the 'Get help' or 'Support' tab. Select Diagnostics: Choose 'View tests' or 'Diagnostics'. Inspect the display closely for "dead pixels" (dots
If the fixer logic is broken, bypass it.
These symptoms mean the flexible OLED panel is cracked internally or the digitizer ribbon cable has detached. In this scenario, take your diagnostics data to an authorized Samsung Service Center or a trusted local technician for a physical screen replacement. Here is what the most critical tests actually
. These tools allow you to verify hardware health without needing third-party software. 1. The "Secret" Hardware Diagnostic Menu