You can assign default numbers or addresses to a contact. If a contact has several numbers or addresses, you can easily call or send a message to a certain number or address. The default number is also used in voice dialling.
In the contacts list, select a contact.
Select Options > Defaults.
Select a default to which you want to add a number or an address, and select Assign.
Select a number or an address you want to set as a default.
To exit the Defaults view and save the changes, tap outside the view.