The HTC Radar 4G, T-Mobile's first 4G- capable Windows Phone, is powered by the new and intuitive Windows Phone OS 7.5 "Mango". The Radar 4G provides a top-notch communications experience through its innovative features that are centered on people, along with pre-loaded apps that will keep you connected and entertained while on-the-go. The HTC Radar 4G is elegantly crafted with an aluminum unibody design for a sleek and stylish appearance.