User Guide
Page 15
... Handset". Keypad Lock You can lock the keypad to prevent it later using a previously used SIM). Locking the Keypad 1. Press P, then [LockKeys] during standby. To unlock, press P, then [Yes]. To Copy Contacts List from being pressed accidentally. Follow the on the SIM card (if using the Contacts List menu as follows...
... Handset". Keypad Lock You can lock the keypad to prevent it later using a previously used SIM). Locking the Keypad 1. Press P, then [LockKeys] during standby. To unlock, press P, then [Yes]. To Copy Contacts List from being pressed accidentally. Follow the on the SIM card (if using the Contacts List menu as follows...