February 25, 2016 — A sure sign that Wi-Fi calling is gaining traction is when Apple includes it in their Operating System (OS). The latest beta version of Apple’s iOS 9.3 includes support for Voice-over-Wi-Fi for Verizon Wireless subscribers — the final piece of the carrier puzzle.
On the hardware side, Apple’s iPhone 6, iPhone 6 Plus, iPhone 6S and iPhone 6S Plus all include support for the new VoWi-Fi service. If the user enables the function, the handset will automatically connect to a proximal Wi-Fi network when the cellular signal is either weak or not available. Verizon was the last of the big four U.S. carriers to offer VoWi-Fi to customers.
The new iOS 9.3 is in public beta. That means that Apple customers have the option to use the OS by signing up for access to public betas.