Fix iPhone phone keyboard error running iOS 10 almost 'freeze'
after upgrading and using ios 10, ios users encounter some errors on their device. recently, many users reflect that the keyboard on their iphone 10 ios device suddenly froze, notEnable Wi-Fi Calling on iOS 10
wifi calling is a feature that allows iphone users to receive or send messages and calls anywhere if the phone has a wifi connection. apple supports this feature first on ios 8.