Soon after the event, T-Mobile took to its corporate blog to announce that it would support Wi-Fi calling on its network.
One of the best things about T-Mobile Wi-Fi Calling is that it’s so simple to use. You don’t need to activate anything or download a special app. Just connect to any available Wi-Fi network, check that Wi-Fi Calling is turned on on your capable smartphone, and make a call (or send a text, email, etc.) as you normally would. That’s it.Wi-Fi calling allows networks to ease strain on bandwidth and potentially speed up the network for other things. It also allows users to experience higher quality calls when carrier signal is low and may drain less battery life during calls.
iOS 8 is available to developers now and launches for the public in the fall.