Browser-based phone test
Dead Pixel Test
Cycle through solid colors, gray steps and a gradient to inspect a display. Dead or stuck pixels, uneven backlight and visible burn-in or ghosting. This cannot judge PWM flicker or the panel's full quality.
Interactive test
Everything runs locally. Nothing is recorded, uploaded or stored.
How to use it
Run the test in portrait or landscape, follow the on-screen instructions and use the visible Exit control or Escape to leave fullscreen. Results describe what this browser session delivered; they are not a replacement for a repair inspection.
Check your phone's real specs →Frequently asked questions
What does the Dead Pixel Test check?
Dead or stuck pixels, uneven backlight and visible burn-in or ghosting.
Does this prove the phone is perfect?
This cannot judge PWM flicker or the panel's full quality.
Is anything uploaded?
No. The test runs in your browser and does not record, save or upload test media.