FaceTime Contact Method Priority [duplicate]
I'm not sure there is a standard way. It certainly isn't easy to find by using the Contacts or the Facetime app. But, it can be done:
- Send a text message to the specific number you want to Facetime call.
- Open the conversation thread.
- Click "Contact" in the top right.
- Click the symbol for calling.
- Choose "FaceTime Audio".