Sprint today announced the availability of Wi-Fi calling from select smartphones. The Samsung Galaxy Mega and the Galaxy S4 Mini will be the first two handsets able to use the service. Sprint says Wi-Fi calls can be made over any Wi-Fi network, such as those in the home, office, or in public. The Wi-Fi calling service includes unlimited, free voice calls and messaging in the U.S. Sprint says the ability to use Wi-Fi networks rather than its cellular network resolves issues such as in-building coverage. The application and service can be set up by device owners in a few simple steps. Galaxy Mega and S4 Mini owners will be notified through an over-the-air update when the service is available to them. Sprint said the update will be pushed out over the coming weeks. Sprint expects to add more phones to the service throughout the rest of the year.


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