Phone Screen Test for iPhone and Android

PixelExams helps you inspect a phone display for dead or stuck pixels, OLED burn-in, image retention, uneven color, and touch-response problems without installing an app.

Phones combine a high-density display with a touch digitizer, so both the image and input response matter. Run the color and gray patterns to inspect the panel, then use the touch grid to drag across the full screen and check for areas that do not consistently register input.

This is particularly useful during a new-device return period, after a screen replacement, or before buying a used phone. The test remains local to the browser and does not upload the device information or your observations.

PixelExams is a guided visual inspection utility. It does not automatically diagnose hardware defects, calibrate a display, or determine warranty eligibility.