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.
Tap “Accept” on the Permissions screen that appears, and the app will begin downloading and installing onto your Android smartphone or tablet.
Take your device to an authorized smartphone repair center as soon as you can to prevent the problem from getting worse.
