A dead pixel is permanently black because it receives no power, which requires a screen replacement to fix. However, a stuck pixel (usually red, green, or blue) can often be fixed by running a high-speed color-flashing video for 10-15 minutes or applying gentle, direct pressure to the pixel with a microfiber cloth.
Identify the Problem: Dead vs Stuck Pixels
The first step is determining if the pixel is dead or just stuck. Use our free full-screen diagnostic tool to cycle through solid colors and locate the exact pixel:
Launch the Free Dead Pixel Test
- Dead Pixel: Appears black on a white background. The transistor is broken. Hardware replacement is required.
- Stuck Pixel: Appears as a bright dot (red, blue, or green) on a dark background. The transistor is stuck “on” and can often be revived.
Method 1: The Screen Flashing Fix (JScreenFix)
The safest and most common way to fix a stuck pixel is to rapidly cycle power to it. There are numerous free videos and web apps (often called JScreenFix) that rapidly flash primary colors in a small square. Leave this running over the stuck pixel at maximum brightness for 10 to 15 minutes.
Method 2: The Pressure Method
If flashing doesn’t work, you can try physically massaging the liquid crystals back into place (only applicable to LCDs, not OLEDs).
- Turn off your phone screen.
- Wrap a soft microfiber cloth around the tip of a stylus or a blunt pen.
- Apply gentle, targeted pressure directly onto the stuck pixel for 5 seconds.
- While maintaining pressure, turn the screen back on, then release.
FAQ
Does a screen warranty cover dead pixels?
Most manufacturers have a “dead pixel policy.” Typically, a single dead pixel is not enough for a warranty claim; manufacturers usually require a cluster of 3 to 5 dead pixels in a specific area before they will replace the display for free.