The diagnostic screen acts as a "fixer" by confirming whether a glitch is a software bug or a physical failure:
Samsung also offers advanced software tools like the modified (often called "BurnIn Fixer") that can recalibrate OLED screens affected by persistent image retention. This is a modified version of Samsung's proprietary after-sales software originally requiring special authorization.
If *#0*# produces no result:
Tap the or Sub-Key options to observe stability, or run the screen tests under varying brightness levels. samsung galaxy diagnostics screen tool fixer
Once inside the diagnostic menu, you can isolate exactly what is wrong with your display. Use these specific tools to evaluate screen health: 1. RGB Color Tests (Red, Green, Blue)
| Code | Function | Key Screen & Fixer Application | | :--- | :--- | :--- | | | TSP (Touch Screen Panel) Firmware Update | This code forces the phone to re-run its built-in touchscreen firmware management, potentially fixing ghost touches, lag, or unresponsiveness. No root permissions are required. | | *#7353# | Quick Test Menu | Provides an alternative hardware test menu that includes a quick screen and touch panel check. | | *#0*# | General Hardware Diagnostic Menu | The primary diagnostic suite for testing the screen, touch, sensors, cameras, and speakers. As previously detailed, it's your main tool for isolating hardware vs. software issues. | | * #*# *# #` | Check Network/Battery Info | While not a direct screen fixer, this can be used to access detailed network and signal statistics, which is useful if you're experiencing display issues related to device heating or power draw. |
[ACTIONS] [1] Run deep pixel scrub (60 sec) [2] Reset touch firmware [3] Force panel power cycle [4] Rewrite EDID emulation data [5] Exit — phone healed The diagnostic screen acts as a "fixer" by
Beyond standard diagnostics, Samsung users encountering screen burn-in can turn to specialized software tools.
The diagnostics tool is a pre-installed, hardware-level testing interface embedded in the Android operating system. It bypasses regular user applications to communicate directly with the phone's component firmware. This isolation helps identify whether a screen defect is caused by software corruption or physical hardware damage. Key Capabilities of the Diagnostic Menu
The tool logs: Screen healed. Cause: display driver IC woke up in wrong power state after wireless charging glitch. Once inside the diagnostic menu, you can isolate
Evaluates screen performance under changing frequency loads. How to Access the Secret Diagnostics Menu
Navigate to > Display > toggle on Touch Sensitivity to boost the digitizer's power.
If the secret code does not work on your device, Samsung provides a user-friendly diagnostic suite inside their official utility application. Step-by-Step Instructions:
The diagnostic results are clear and actionable. For example, if the test finds an issue with the screen's pixel response or color accuracy, the Samsung Members app will highlight that specific failure. This provides you with an immediate, official status report that can help you decide the next course of action.
Tap the button on the diagnostic grid. A black grid layout with a series of outer and inner boxes will appear.