To add contacts to your Address Book please follow the instructions below;
1. Open your Bitcoin.com wallet app and tap on the settings cog at the bottom right side of the screen.
2. Select Address Book.
3. Choose the needed currency type (Bitcoin Cash/Bitcoin Core/SLP token) and press on “Add contact”.
4. Next, add a name and an address to the contact.
5. Once you have the contact details entered, press “Add contact” and the bitcoin address will be added to your address book.