Dead pixels are a defect in the LCD screen. They show up as black or in a different color no matter which color is displayed on the screen. Nothing is going to fix it other than replacing the screen or your device.
Provide evidence that something is wrong with your device screen by using Display Test.
Check the screen with Display Test at the store to make sure you have a good display.
Easy to use.
Help available in the application.
Responsive customer support.
Version: 1.0
File Size: 63 KB
Required: 5.0.0 or higher
Download Display Test v1.0
OTA
Offline
BlackBerry World
https://appworld.blackberry.com/webstore/content/29691/
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