Wi-Fi Calling will initially be available on the Samsung Galaxy S 6 and Samsung Galaxy S 6 Edge and will be rolled out as a software update in phases. Additional Android and iOS devices will receive Wi-Fi Calling capabilities via future software updates expected early next year.Wi-Fi Calling allows phone calls to be automatically placed over Wi-Fi connections in areas where cellular service is poor, seamlessly transitioning between cellular and Wi-Fi as needed.
Sprint and T-Mobile have supported the feature for some time, and AT&T launched its support in early October. AT&T made waves by claiming Sprint and T-Mobile have been offering the feature illegally, due to Federal Communications Commission requirements for supporting a teletypewriter (TTY) feature for deaf and hard-of-hearing users.
AT&T received its waiver from the FCC just days later, and Verizon followed with its own request, with the FCC approving it several weeks ago. Sprint and T-Mobile have not received waivers from the FCC, but continue to operate Wi-Fi Calling and believe no waiver is required.
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