How to Test for Dead Pixels on your Phone

Do you know what a dead pixel is? Well, if you do, most average mobile phone users don’t. Learn how to detect dead pixels on your phone, tablet, or other LCD powered gadgets by reading this simple tutorial.

Whenever we buy any brand new gadgets, we always aspire to get them at their best condition and without any hidden defects. In the case of smartphones, one common factory defect that most users tend to miss out is the existence of dead pixels.

A dead pixel (or defective pixel) is a small dot in our device’s LCD screen (usually in black or white) that’s incapable of changing/distinguishing into three different colors (red, blue, green). This kind of defect is not new already and commonly found on low-cost phones. Just this month, a friend of mine purchased a local brand smartphone and also noticed the same defect on his brand new unit.

You might also want to read: 5 Causes Why iPhone Battery Drains Fast (w/ Saving Tips)

So what if your phone has a dead pixel? Well, if you care less and aren’t bothered at all by it’s existence, then you may skip reading this article. But if you do, early detection of dead pixels on your phone is very important for possible unit replacement depending on your phone’s warranty terms.

dead pixel

What dead pixel looks like

dead pixel on phone

Actual dead pixel on Cherry Mobile Omega HD 2

So how do you check your phone for dead pixels? It’s very simple.

Dead Pixel Test

1. Clean your phone’s screen with cloth to remove dirt and dusts.

2. Download or save the following images on phone.

3. On your phone’s Photo gallery, open the downloaded image and zoom them until the whole screen display is covered.

4. Check for any suspicious dots that doesn’t change based on the image’s color. That’s it!

Once you found dead pixel(s), immediately go to your phone vendor and ask for a unit replacement or, at worst cases, have them replace the device’s screen panel. For local phone brands in the Philippines (e.g. Cherry Mobile, MyPhone, StarMobile, etc.), unit replacement warranty is only valid for  7 days so if you happen to own units under these brands, be sure to visit them ASAP and bring your official receipt to get them replaced.

Hope this article helps. If you have further inquiries regarding this tutorial or about dead pixels, feel free to leave a comment below.

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3 Responses to How to Test for Dead Pixels on your Phone

  1. Bryze Bloom July 22, 2013 at 5:28 AM #

    does dead pixel spread or gone worst time by time?

    • Jeffrey Diana July 22, 2013 at 6:39 AM #

      Hi Bryze! Generally, a dead pixel does not spread to nearby pixels. However, you can potentially create more if you happen to drop your phone or damage your screen.

      • Bryze Bloom July 22, 2013 at 6:51 AM #

        I thought it will spread like a virus. Haha! Anyways, Thanks man! ;)

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