Phone Dead Pixel TestPhone Pixel Test
Start the test, then tap the screen to step through each colour.
Phone pixel check
Tap anywhere for the next colour
On a phone
- Tap the screen to change colour.
- Max brightness, clean screen.
- Rotate to check the notch area.
Your screen
- Resolution
- --
- Viewport
- --
- Pixel ratio
- --
- Colour
- --
Shortcuts
- F fullscreen
- ←→ / click: colour
- Esc exit
Found a stuck pixel?
Stuck pixels are often lit in one colour and can sometimes be revived.
Open stuck pixel fixer →How to use
- Clean the screen and set brightness to maximum.
- Press Start test; tap anywhere to change colour.
- Look for dots that do not change. Press Exit to finish.
How to run a phone dead pixel test
This phone dead pixel test works in your mobile browser on iPhone, Android and tablets. Tap Start test, then tap the screen to change colour. The colours also change automatically every 3 seconds during the cycle.
Checking a new or used phone
- Clean the glass and remove any thick screen protector if possible.
- Raise brightness to maximum and disable dark mode filters.
- Check around the notch or camera hole and along curved edges.
- On OLED phones, also look for burn-in on grey.
What to do if your phone has a bad pixel
For a new phone, contact the seller within the return period. For phones under warranty, contact the manufacturer or carrier with a photo. Read pixel policies and warranty for how to approach a claim.
Frequently asked questions
How do I test my phone for dead pixels?
Open this page, set brightness to maximum, tap Start test and tap the screen to step through the colours. Look closely across the whole screen, including around the camera cut-out.
Why does fullscreen not work on my iPhone?
Some iPhone browsers do not allow web pages to go fullscreen. The test then fills the browser window instead; turn the phone sideways or hide the toolbars by scrolling for more space.
Does this work on tablets?
Yes, it works the same on iPad and Android tablets.