So I had an android phone that my work provided for me. It was terrible to say the least and I really wanted to try out Windows Phone so I shelled out my own money to buy the HTC Radar. So far I really like the OS and the phone even though I am still adjusting to it. My question to you guys is this phone compatible with T-Mobiles WiFi calling or are any Windows phone compatible for that matter? I searched the forums and saw no real definite answer so I figured I would start a new thread with the most recent experiences. Doing a google search didn't really help either.