Using a device password on BlackBerry 10
When I got my first BlackBerry way back when, I didn't care so much about keeping it locked with a password. As time went on however, I realized the importance of doing just that. On my Bold 9900 I used one of many pattern lock apps as it gave me a quick and easy way to secure my device without having to type in a password each time.
On BlackBerry 10, currently the only option is using a device password to keep things safe. I do find it a bit cumbersome at the moment, as you still have to swipe up the screen (or tap the lock button) then enter your password on the virtual keyboard. I think that having the option for a PIN or pattern lock would be much better suited for the BlackBerry Z10. Anyway - if you're looking to lock your device with a password, keep reading and we'll show you how.
To set the device password, tap the Settings icon, then Security and Privacy > Device Password
Toggle Device Password on and enter a password
Choose how long to after the screen dims to lock the device. Press back to save
To unlock your device from sleep, swipe up on the screen or tap the lock button
Enter your password to unlock the device
As you can see, using a password on the Z10 is a bit ugly, but it gets the job done. You should keep your device locked with password - trust us on that one.