Wi-Fi calling is a service offered by major U.S. mobile service providers that allows you to use a Wi-Fi network instead of your cell phone plan to make and receive calls. It's a useful feature when you have no cell phone reception or limited minutes on your phone plan.

Below you can learn more about Wi-Fi calling, when you can use it, and how to enable it for Android smartphones.

Wi-Fi Calling is a High Definition (HD) Voice service offered by mobile service providers including Verizon, AT&T, T-Mobile, Sprint, and others. When paired with your HD Voice-enabled Android smartphone, Wi-Fi Calling lets you make calls over a Wi-Fi network instead of through your phone's data plan. With Wi-Fi Calling enabled, you can make calls directly from your phone's keypad. No special software or apps are required.

Wi-Fi calling is based on HD Voice technology, which delivers calls over fourth-generation wireless networks (known as 4G LTE). 4G LTE offers better quality and faster speeds than older technologies. This improvement results in clearer, more natural-sounding calls.