Read help info
If the phone lock code is turned on, it needs to be keyed in when you turn on your phone. Follow these instructions to turn use of phone lock code on or off.
Find "Security keyguard"
Press Security keyguard.
Turn use of phone lock code on or off
Press On or Off.
Key in the phone lock code (default is 12345) and press OK.
Press Disconnect to return to standby mode.