: Fills the entire screen with these colors to reveal dead or stuck pixels.
Receiver plays a high-pitched tone through the earpiece speaker to test call clarity. Speaker tests the main audio drivers at maximum volume. Vibration runs the internal haptic motor continuously.
Open the *#0*# menu and look at the RED and BLUE screens. If the line remains highly visible across all primary color screens, it indicates physical damage to the display's flexible matrix tape or an overheating display driver chip. samsung galaxy diagnostics screen tool fixer
The Samsung Galaxy diagnostics screen tool is a built-in, advanced diagnostic interface designed primarily for technicians and repair professionals. Unlike standard settings menus, this tool provides direct access to hardware tests that evaluate your device's display, sensors, speakers, microphones, cameras, vibration motor, and more.
If a hardware test fails, the app may offer suggestions. You can also tap "View related FAQ" for additional help. : Fills the entire screen with these colors
Samsung Galaxy devices are engineering marvels, but like any sophisticated piece of hardware, they can occasionally run into glitches. Whether your touchscreen is acting up, your battery is draining too fast, or your sensors seem calibrated incorrectly, the first step to a solution isn't a trip to the repair shop—it’s the built-in Samsung Galaxy diagnostics screen tool. This hidden menu allows you to identify hardware failures versus software bugs, potentially saving you hundreds of dollars in unnecessary repairs. Understanding the Hidden Diagnostic Menus
The top buttons on the diagnostic grid force your screen to display uniform, solid colors across 100% of the panel. Vibration runs the internal haptic motor continuously
Open your Phone app, go to the dialer, and type *#0*# . Key test functions: