How to Check Dead Pixels on Phone, TV and Laptop

Knowing how to check dead pixels is not only useful for desktop monitors. It also matters on phones, TVs, and laptops, where a defective point can go unnoticed for days if you do not inspect the screen properly.

In this guide, we explain how to run the check on different devices, what to look for on each one, and which details change depending on screen size, brightness, and viewing distance.

The Basic Method to Check Dead Pixels

The most reliable way to check dead pixels is to display solid fullscreen colors and watch whether a black, bright, or fixed point appears in the same location every time. The most useful colors are usually white, black, red, green, blue, yellow, cyan, and magenta.

This method works on almost any screen because it makes it much easier to see whether a point is not changing as it should.

How to Check Dead Pixels on a Phone

1. Clean the screen well so dust is not confused with a defect.
2. Set brightness to a medium or high level.
3. Open a fullscreen color test.
4. Look closely to see whether any point stays exactly the same.
5. Tilt the phone slightly to rule out reflections or dirt.

On phones, very small defects may be harder to notice because of pixel density, so it helps to inspect slowly and carefully.

How to Check Dead Pixels on a TV

1. Turn off lights or reduce strong room reflections.
2. Display fullscreen solid colors.
3. Move closer than usual for a precise inspection.
4. Then review again from your normal viewing distance.
5. Check whether the same point remains visible on multiple colors.

On a TV, some defects can be easier to miss because of panel size and viewing distance, which is why it helps to inspect both up close and from the sofa.

How to Check Dead Pixels on a Laptop

1. Clean the panel and place it in a well-lit environment.
2. Open the test in fullscreen mode.
3. Cycle through the main solid colors one by one.
4. Inspect the center and corners of the screen carefully.
5. Repeat the check if you notice a suspicious point.

On laptops, the close viewing distance means even a very small defect can be more annoying than it would be on a TV.

Signs That Suggest a Real Defect

• A black point that never changes.
• A red, green, blue, or white point that stays fixed.
• A point that stands out only on certain solid backgrounds.
• A mark that remains visible even after cleaning.

Frequently Asked Questions