iPhone 4S: Create, Remove, or Use Speed Dial Contacts
To Use Speed Dial Contacts
1. Starting at the Home screen, touch Phone.
2. Touch Favorites.
3.Touch the "+" Button to add a new favorite contact.
NOTE: To delete or edit a "favorited" contact you must touch Edit.
4. Choose the desired contact.
NOTE: If the contact has one or more numbers, choose the one you'd like to be one of your favorites.
5. Choose the type of favorite you'd like.
Referenced from: ATT.com
4/19/2016 4:10:20 PM