1 Find "Phone autolock period"
Press the Menu key.

Press Settings.

Press Phone.

Press Phone management.

Press Security settings.

Press Phone and SIM card.

Press Phone autolock period.

2 Activate or deactivate
To activate the phone lock code:
Press User defined.
Press User defined.

Key in the required number of minutes.
Press OK.
Press OK.

To deactivate the phone lock code:
Press None.
Press None.

Key in the phone lock code (default is 12345) and press OK.

3 Exit
Press the Menu key to return to standby mode.
