Keypad lock (keyguard)
Use the keypad lock to prevent the keys from being
accidentally pressed.
To lock the keypad, in the standby mode, press the left
selection key, then *. When the keys are locked,
is
shown on the display. To turn on the display light when
the keypad lock is on, press the power key.
To unlock the keypad, press the left selection key, then *.
When the keypad lock is on, calls still may be possible to the
official emergency number programmed into your device.