Samsung Galaxy Diagnostics: Screen Tool Fixer ((new))

💡 Always ensure your phone is updated to the latest version of One UI, as Samsung frequently updates the diagnostic algorithms to be more accurate.

Once you enter the secret menu, you will see a grid of white buttons. Several of these buttons are designed specifically to test and calibrate your screen. 1. RED, GREEN, and BLUE Buttons

Below the options, in tiny red letters: This tool intended for Samsung service centers only. Unauthorized use voids warranty and may PERMANENTLY disable device.

Go to Settings > Display > Motion Smoothness . Switch your device from Adaptive (120Hz) to Standard (60Hz) , then restart your phone. Sometimes forcing the screen driver to change refresh rates resets stuck pixels. samsung galaxy diagnostics screen tool fixer

If the tests revealed uneven color distributions, flickering, or minor stuck pixels:

This is a technician-level tool designed for raw hardware testing.

From hidden "secret" menus to official apps, here is how to find and use the Samsung Galaxy diagnostic screen tool fixer. 1. The "Secret" Hardware Test Menu 💡 Always ensure your phone is updated to

If your screen goes black during a call and won't wake up:

Note: This code may not work on all carriers (like Verizon) or some newer models. If it fails, try *#*#88#*#* as an alternative. 2. The Samsung Members App (User-Friendly) If you prefer a guided experience, the Samsung Members

The engineering menu is a powerful diagnostic tool, not a self-repair tool. Some of its settings are intended for use by trained technicians and can negatively affect your device if modified incorrectly. It is best to use it strictly for passive testing. Go to Settings > Display > Motion Smoothness

Go to Settings > Display and turn on Touch Sensitivity .

Leaving the screen on the solid Blue or Green tile at maximum brightness for short bursts (2–3 minutes) can sometimes help "equalize" slightly stuck or lazy sub-pixels, minimizing minor image retention. 2. Touch Screen Responsiveness Testing ( TOUCH )