Sprint announced that customers running the recently-released iOS 8.3 update are now able to use the carrier's Wi-Fi calling feature. The same capabilities came to customers on U.K. carrier EE earlier today. A new Wi-Fi Calling option will appear in the Settings app on iOS after you update to iOS 8.3 to let you switch the feature on.
Wi-Fi calling allows you to make calls over your Wi-Fi network instead of a cellular connection. Sprint's Wi-Fi calling on the iPhone is supported on devices from the iPhone 5c to the iPhone 6 and iPhone 6 Plus.
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