Wi-Fi Calling

Wi-Fi Calling for when there is little or no cellular coverage

Wi-Fi Calling can be used in campus buildings or other locations where there is Wi-Fi service but little or no cellular coverage.

Wi-Fi Calling provides cellular connectivity to smartphones over wireless networking, enabling you to make and receive calls and texts even though your device is not receiving a cellular signal. Once you enable Wi-Fi Calling, phones with that capability will switch to using it automatically when the cellular signal is low and the phone is connected to a Wi-Fi network.

Tell me more

Here is an article about Wi-Fi Calling from one of the IT news sites.

Everything you need to know about Wi-Fi calling (CNET)

Excerpts: "Instead of using your carrier's network connection, your phone can make a voice call via a Wi-Fi network. In most ways, it's like any other phone call, and you still use regular phone numbers. Wi-Fi calling is especially useful when you're in an area with weak carrier coverage. When Apple included Wi-Fi calling capabilities in its iPhone 6 in 2014, the four major carriers in the US ramped up their support of it. These days, you can find [multiple phone models] that have built-in Wi-Fi calling capabilities."

Learn about Wi-Fi Calling for your smartphone

By cellular service provider

Here is information from major U.S. cellular carriers about Wi-Fi Calling, how to use it and which of their devices support it:

By phone software type

And here is Wi-Fi Calling information from smartphone software makers:

iPhone screenshot showing the word "Wi-Fi" appearing between the carrier name AT&T and the Wi-Fi signal strength indicator.

In Apple iOS, when Wi-Fi Calling is active, the word "Wi-Fi" appears between the cellular carrier's name and the Wi-Fi signal strength indicator.