Everyone loves something for free, especially in the mobile space, and apparently if you are a T-Mobile USA customer with a UMA supported smartphone, T-Mobile has now given you a generous gift in the form of free WiFi calling.

According to the guys over at Gigaom, previously all T-Mobile USA WiFi calls were counted toward the users minute plan but as of now all calls made over WiFi will be free.

Apparently Tmonews, previously reported that this may come about, and now the firm that makes UMA based systems, Kinto Wireless has confirmed it in an email letter which reads…

“T-Mobile is excited to expand our Wi-Fi Calling feature, a unique and valuable service T-Mobile has been offering customers for over three years. Starting today, T-Mobile customers can add Free Wi-Fi Calling to their rate plan — at no additional charge — to place calls over Wi-Fi without deducting from their allotment of minutes. This new feature is available at T-Mobile retail stores to all customers on Even More and Even More Plus Postpaid rate plans who have Wi-Fi Calling capable handsets.”

Word is free WiFi calling is available to all Android handsets that come with the preinstalled Smart WiFi app and has been pre-configured by T-Mobile. So there you go you lucky T-Mobile USA Android devotees, free WiFi calling now at your fingertips.