SAN FRANCISCO - A recent leak of training documents and screenshots created a swirl of rumors that T-Mobile would make Wi-Fi calling available on its Android phones, and now we have official confirmation from the carrier itself.
On the opening day of CTIA Fall 2010, T-Mobile announced that it will offer its Wi-Fi Calling service on a selection of Android smartphones, including the upcoming T-Mobile MyTouch and Motorola Defy, which will allow you to make calls and send text messages over a Wi-Fi network.
Powered by Kineto's Smart Wi-Fi application, the service is ready to use out of the box and also features a tutorial to help first-time users. It's important to note, however, that Wi-Fi calling will only be available on a select number of T-Mobile's Android phones and not all.
T-Mobile offers Wi-Fi calling on a number of its other smartphones as well, including the RIM BlackBerry Bold 9700, BlackBerry Curve 8520, BlackBerry Curve 3G, and Nokia E73 Mode.