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This article was co-authored by Shavo Hacopian. Shavo Hacopian is a Smartphone Repair Specialist. With over 17 years of experience repairing and customizing smartphones, Shabin has a follower base of over 119,000 YouTube subscribers on his channel PBKreviews, and has over 29 million views. He specializes in teaching people how to take smartphones apart, repair or replace parts, and make informed decisions about what the right products are for them.
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The most common issues of Android screens are dead and stuck pixels. Dead pixels occurs when small color pigments of your screen gets busted, resulting to a black spot on your screen, while stuck pixels are color pigments of the display that are frozen, unable to change to other colors like it normally should. These issues can easily be avoided if you can detect it while the problem is still not that severe. That's why testing your LCD display is outright important and needs to be done frequently to avoid any issues from worsening.
Quick Steps
- Download a screen test application (preferably by Amberfog or Ranebord).
- Launch the application.
- Press the Test button to run the test.
- Look for dead or stuck pixels.
Steps
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![Step 1 Open your Google...]()
Open your Google Play Store. Tap open its icon from your Android phone or tablet's home screen to access it. Here, you can download different kinds of software that's specifically designed for Android smartphones and tablets. -
![Step 2 Find a screen test application.]()
Find a screen test application. Tap the Search field at the top of the screen and type in “screen test.” Press the magnifying glass icon to start searching, and a list of corresponding apps will be displayed.- On the list you'll see a bunch of apps that's made for testing LCD displays. You can choose either one of these, but the most recommended applications to get are those developed by Amberfog and Ranebord.
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![Step 3 Install the screen testing app.]()
Install the screen testing app. Tap on the app you want then tap the “Install” button on the app's Overview page.- Tap “Accept” on the Permissions screen that appears, and the app will begin downloading and installing onto your Android smartphone or tablet.
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![Step 1 Launch the screen test app.]()
Launch the screen test app. Tap its newly created icon from your Android's home screen to open it. Inside you'll see two buttons: “Test” and “Exit.” -
![Step 2 Begin testing.]()
Begin testing. Tap the “Test” button to start. The application will change your screen into different solid colors like red, blue, green, black, and white. To cycle between colors, simply tap anywhere on the screen of your device and its color will change to the next one. -
![Step 3 Look out for dead and stuck pixels.]()
Look out for dead and stuck pixels. If you see any black (or any other color) square dot on your screen as you change it from one solid color to another, then you're Android has a dead or a stuck pixel.- Take your device to an authorized smartphone repair center as soon as you can to prevent the problem from getting worse.
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![Step 4 Exit the application.]()
Exit the application. Press your Android's Back key to go back to the app's menu screen. Once you're there, press the “Exit” button to close the application and go back to the Android's home screen.
Expert Q&A
Tips
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Download applications from Google Play Store while connected to a Wi-Fi connection only. Downloading apps using your mobile data may result to unnecessary network charges.Thanks
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Screen testing applications are generally free to download and install on any Android device, no matter its make and model.Thanks
Tips from our Readers 
- Be sure to use the latest updated software from the Google Play Store, as the old software may not show everything.
Expert Interview
Thanks for reading our article! If you’d like to learn more about troubleshooting mobile phones, check out our in-depth interview with Shavo Hacopian.
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