procedure for entering address book
To add a new contact you should:
1. From the Home screen, press the Right Soft Key and choose
Contacts.
2. Press the Right Soft Key, choose Options, then New Contact.
3. Use the keypad to enter a name for the contact in the
Name: field.
4. Use the Directional Key to highlight Mobile 1, Home,
Business, Mobile 2, or Fax and enter at least one telephone
number.
5. Continue using the Directional Key to move to fields
to add additional information, if desired (Email, addresses etc.)
6. When you’re finished entering information, press
Save to save the contact.
Contacts provides access to powerful features such as Groups,
creating and sending vCards.
Detailed info about managing Contacts you can find in the manual.
Download it here: https://www.cellphones.ca/cell-phones/samsung-gusto/