Blackberry Nextel 6510 Getting Started Manual page 60

Getting started
1. On the Home screen, click the Keyboard Lock icon. The Lock
screen appears.
2. To use your handheld again, double-click the trackwheel.
To use password protection
Set a password on your handheld to obtain greater security. If your
handheld is left idle for a specified amount of time, you must type
your password to use the handheld again. You can also manually
activate the Lock screen by clicking the Lock icon on the Home
screen. You should lock your handheld with a password if you leave
it unattended.
If you do not want the Lock screen to appear, you must disable your
password in the Options application, on the Security screen.
Note: The Lock screen shows your contact information (if you have
typed it on the Owner screen). If you have enabled a password, type it
and click the trackwheel to resume using your handheld. If you have
not enabled a password, double-click the trackwheel to resume using
your handheld.
If you receive a phone call while your handheld is locked, you can still
answer the call. While connected to the call, click the trackwheel to
either enter your password and unlock the handheld or end the call.
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Lock screen with a password enabled
BlackBerry Wireless Handheld