If the diagnostics tool reveals a problem, or if the screen is behaving erratically, you can try several software-driven fixes. A. Clear System Cache Partition System bugs can manifest as screen issues. Turn off the device. Connect to a computer via USB (necessary for Android 11+). Hold and Power buttons. When the logo appears, release Power.
: Unlike the simple percentage in your status bar, this diagnostic reads the
You should run the Galaxy Diagnostics Screen Tool Fixer if you experience any of the following symptoms (Note: It will NOT fix a shattered glass or liquid damage):
Remove thick tempered glass screen protectors, which can desensitize capacitive layers. galaxy diagnostics screen tool fixer
Run the Samsung Members diagnostics before you go, as it provides a report that helps technicians identify the problem faster.
If your device has one, you can test both the touch and hover capabilities. doesn't work, ensure Auto Blocker is turned off in Settings > Security and Privacy. 2. Official Samsung Members Diagnostics
The Galaxy diagnostics screen tool is excellent at identifying faults, but software tweaks cannot fix physical damage. You will need to contact an authorized service center or visit a repair technician if: If the diagnostics tool reveals a problem, or
Note: If your carrier has disabled this specific dialer code (common on some Verizon or AT&T models), you can alternatively open the app, navigate to Support , and select Phone Diagnostics . Understanding the Core Screen Diagnostic Tests
Full-screen color displays to detect dead or stuck pixels.
| Problem | Tool to Use | How it Helps | | :--- | :--- | :--- | | | Red, Green, Blue buttons | Run each solid color for 10-20 minutes. Rapidly cycling colors can sometimes "wake up" stuck pixels. | | Screen Burn-in (Ghosting) | Red, Green, Blue, Black | Leave on a single bright color (e.g., Red) for 15 minutes to try to "wear evenly" the OLED pixels. Note: This is a temporary fix; permanent burn-in requires a screen replacement. | | Ghost Touches / Unresponsive Area | Touch (Draw) button | Draw lines across the entire grid. If the line breaks, the digitizer is failing. This cannot be fixed via software. | | Color Distortion / Yellow Tint | Dimming / Mega button | Toggle brightness levels. If colors change unevenly, the display panel is failing. | Turn off the device
If a box refuses to turn green, that specific zone of your digitizer is physically damaged or unresponsive.
If you are looking to fix screen or performance issues, Samsung provides several built-in tools:
Once inside the *#0*# menu, you will see a grid of colored buttons. Here is how to use them as a :
Download a high-quality display exercise app or play a "Screen Burn-In Fixer" video on YouTube.
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