Apple Watch Series 5
Calling a contact in your address book
You can call a contact saved in the address book on your phone. To call a contact in your address book, your Apple Watch needs to be connected to your phone.
Press the Digital Crown.
Press the phone icon.
Press Contacts.
Press the required contact.
Press the call icon.
Press the required number.
Press the end call icon.
Press the Digital Crown twice to return to the home screen.