Display text when your device is locked
You can display text on the screen of your BlackBerry device when the device is locked. For example, you can display a
favorite quote, emergency contact information, or your own contact information so that if you lose your device, anyone who
finds it can contact you.
On the home screen, swipe down from the top of the screen.
Security and backup
Settings > Security and Privacy > Lock Screen.
In the Lock Screen Message fields, type the text.
To delete the text that appears on the screen when your device is locked, delete the text in the Lock Screen Message