Verizon WiFi Calling
The iOS 9.3 update includes support for Verizon WiFi calling on the iPhone. Apple already supports T-Mobile, Sprint and AT&T WiFi calling on current versions of iOS 9.
With WiFi calling users can make calls and send text messages over WiFi, even when there is no good Verizon signal or coverage. This is not FaceTime Audio or iMessage, so it works to call and text any number.
Once users set up Verizon WiFi calling on iOS 9.3 the iPhone will automatically use this when coverage is poor and you have WiFi. The Verizon WiFi calling only works on the iPhone 6, iPhone 6s, iPhone 6 Plus and iPhone 6s Plus.