Troubleshooting
Open the test in fullscreen and cycle solid red, green, blue, white, and black while scanning for a dot that stays in the same spot.
Pro tip
Turn off True Tone or Night Shift temporarily, then check each solid color in fullscreen.
Common symptoms
- Tiny dot stays dark
- Single pixel stays colored
- Spot stays in one place
Use dead pixel test ios to check whether a small dot stays in the exact same spot across solid colors. After cleaning the screen, a pinpoint mark still appears in the same place, no matter what app you open. Open the test, go fullscreen, then cycle red, green, blue, white, black, and gray.
Some posts claim you can always fix it instantly, but results depend on whether the pixel is stuck or truly dead. The key distinction is dead vs stuck. Dead usually stays dark, stuck often stays as a colored point. On phones and tablets, high pixel density can hide a defect until you view a solid color in fullscreen. On iOS, run it in your usual browser and keep your scaling stable while you test. If you only notice the dot in one game or one website, repeat the same fills in a different tab to rule out rendering quirks.
To get a fair result from dead pixel test ios, keep it simple: - If you are on a laptop, disable any auto brightness feature for the test. - Wipe the screen gently with a microfiber cloth first, dust can look like a pixel defect from a distance. - Set brightness to a normal level, then repeat at slightly lower and higher brightness to see if the dot changes. Then drag a window behind the spot. If it never moves, it is unlikely to be an app overlay.
A quick check is screenshots. If the dot shows up inside screenshots when viewed on another device, it is software or the image itself, not the panel. If it never appears in screenshots but shows on every solid fill, that points to the screen.
Run the full version on the main tool page for cleaner fullscreen patterns: dead pixel test tool. For related display checks, use the Display tests. Finish by repeating dead pixel test ios once more after a reboot or a different app, then decide if it is worth support or a return.