If the *#0*# touch test persistently shows blank squares after removing screen protectors and cleaning the glass, the physical digitizer layer underneath the glass is cracked or short-circuited.
Cameras, microphones, speakers, and vibration motors.
8 Dec 2025 — How to Check Display on Samsung Phones Using Secret Codes * You can test the display of your Samsung phone by using the code *#0*# Beebom Gadgets Self-Diagnose Your Samsung Phone samsung galaxy diagnostics screen tool fixer
Before running any diagnostic test, always ensure your device's software and related apps are updated to the latest version.
To access the diagnostic tools on your Samsung Galaxy, you can use either a hidden "secret code" for hardware testing or the official Samsung Members app for a guided software and hardware check. 1. Hardware Test Menu (Secret Code) If the *#0*# touch test persistently shows blank
For years, Samsung Galaxy users have faced a frustrating dilemma when hardware or software issues arise. If a phone won’t charge, is it the cable, the port, or the battery? If the screen flickers, is it a loose connection, a software glitch, or a failing display panel?
Your Samsung Galaxy smartphone is a powerhouse of advanced engineering, but like any sophisticated computer, it can occasionally experience hardware hiccups or software glitches. When your screen flickers, touch inputs fail, or pixels seem dead, you do not need to immediately run to an expensive repair shop. Samsung builds a secret, enterprise-grade diagnostic suite directly into One UI. To access the diagnostic tools on your Samsung
By running the tests, you might find that a supposed "broken screen" is actually just a temporary software glitch. Here’s how the tool helps:
Samsung's official Self Repair Assistant app is available in the Galaxy Store and provides step-by-step repair guides.
This test automatically scans for brightness anomalies, refresh rate stuttering, and resolution mismatches.
If the screen works perfectly in Safe Mode, delete recently downloaded apps, launchers, or screen-dimming overlay apps.