Sprint has announced the first phone for its 4G WiMAX network, the HTC Evo (previously rumored to be the HTC Supersonic). The HTC Evo phone will run on Sprint’s 4G WiMAX network and also support EV-DO, EV-DO Rev. A, and CDMA. While running on the 4G WiMAX network, the HTC Evo will be the first...