WiFi calling is a new, completely free, easy to use app for making and receiving phone calls over Wi-Fi. Calls can be made without any additional hardware or additional subscriptions. It works with any Wi-Fi hotspot or access point.

WiFi calling is different than a normal Wi-Fi network in that it can be used to make phone calls. 

WiFi calling is a way to save money. You can use it without subscribing to a cellular network plan, which is a big advantage for mobile data users.

How does it work?

To make a call via a Wi-Fi network, the user connects to a Wi-Fi network with an app on their iOS device.