Understanding the result
After the timed color cycle, inspect the same spot again with solid backgrounds. Any apparent change must be judged visually and may be temporary.
Mobile checks
Stuck Pixel Fixer
Move the patch over the affected spot and run it briefly. Color cycling sometimes helps a stuck subpixel, but it cannot repair a dead pixel or guarantee a fix.
Flashing colors: avoid this tool if flashing light may cause discomfort or seizures. Stop at any time.
Drag
2:00
Drag the patch over the spot. It may help a stuck subpixel, but cannot guarantee repair.
This tool flashes a small area. Do not use it if flashing light causes discomfort or seizures. It may not change the pixel.
How to use this tool
- First identify the spot with the Dead Pixel Test.
- Drag the small patch over that spot and start the timer.
- Stop if the flashing feels uncomfortable; check the spot again afterward.
Troubleshooting
- Confirm the spot with the Dead Pixel Test and place the patch precisely over it.
- Stop immediately if flashing causes discomfort; a longer session does not guarantee a better result.
Browser and device limitations
Color cycling cannot repair physical panel damage or guarantee recovery of a stuck subpixel.
RELATED TOOLS
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Touch Screen TestDraw across the screen to find areas that miss touches.Open toolMulti Touch TestCount simultaneous fingers detected by your touchscreen.Open toolVibration TestTry a short vibration pattern on a supported phone.Open toolGyroscope TestWatch orientation values change as you turn your phone.Open toolAccelerometer TestSee motion values while moving your phone.Open tool
Common questions
How long should I run it?
Start with two minutes. You can stop at any time; a longer session is not a guarantee of improvement.
Can it fix a black dead pixel?
Usually no. A permanently unlit pixel can require panel repair or replacement.
Is the flashing safe for everyone?
No. Avoid this tool if flashing light may trigger discomfort or seizures, and stop whenever needed.