©2002 Nokia Corporation. All rights reserved. 25Basic functionsUse Send DTMF to send DTMF tone strings. Locking the keypadYou can lock the keypad to avoid accidental keypresses, for example, when the phone is in yourhandbag, or to avoid unauthorised use of your phone.To avoid accidental keypresses:• Press Menu and then quickly in standby mode. OR:You can also set the phone to automatically lock the keypad if the phone has not been used for acertain length of time: Press Menu in standby mode and select Settings, Keyguard settings,Automatic keyguard and On. Key in the delay time in minutes and seconds, and press OK. Thekeypad lock is turned on when the phone is in standby mode.• To unlock the keypad: Press Unlock and then quickly in standby mode.To avoid unauthorised use of your phone:• First, activate the keyguard code: Press Menu in standby mode and select Settings, Keyguardsettings and Keyguard code. Key in the security code and press OK. Select On.Then, lock the keypad: Press Menu and then quickly in standby mode.• To unlock the keypad: Press Unlock in standby mode. Key in the security code and press OK.When the keypad is locked:• The indicator is shown.• To answer a call, press , When you end or reject a call, the keypad will be automatically locked.• The HDC-5 headset can be used normally.
