How do I reset my device password if I forget it?
For security reasons, the only way that you can reset your BlackBerry device password without knowing your current device
password is to delete all of your device data. You can typically do this by entering an incorrect device password ten times.
Security and backup
If you have the BlackBerry Protect anti-theft feature turned on, to set up your device again, you will need to enter your
BlackBerry recommends that you regularly create and save a backup file on your computer.