Can You Call Using WiFi?

With Wi-Fi Calling, you can make or receive a phone call if you have a Wi-Fi connection in an area with little or no cellular coverage.

Learn how to make a voice call using Wi-Fi Calling.

To use Wi-Fi Calling, you need an iPhone 5c or later on a supported carrier.

Photo in the article by “Wikimedia Commons” https://commons.wikimedia.org/wiki/File:GSM_to_Wi-Fi_Call_Demo.jpg