Deleting a contact1. Press [ ] or press Menu > Address Book > Contacts.2. Select a contact > Options > Delete.Adding a contact1. Press Menu > Address Book > Add Contact.2. Select Phone or SIM.3. Input the fields.4. Press OK or Save.Making groups1. Press Menu > Address Book > Groups.2. You can select Phone Groups or SIM Groups. There will be defaultedgroups.3. To add new group, press Options > Add Group.4. To edit group press, Edit Group. You can also set a specific ringtone byselecting Ringtone > OK > select the ringtone.5. To delete group press, Delete Group.Caller identificationCaller identification**1. Press Menu > Settings > Call > Display My Number.2. Select Network Default, Show or Hide > Select.Using your headsetYou can send or receive a call using your headset.When you connect your headset to the jack the button on the headsetworks as follows.Note: You need to use the headset designed for this device, and it isoptional item. Also not every headset has a button.While in standby mode1. Press the button once to list recent calls.2. Press the button twice to redial the last call.While the phone is closed1. Press the button once to receive a call.2. Press the button once to end the call.