It won't ship til summer, but Sprint has a 4G phone for the Clearwire network: The HTC Evo 4G will be the first WiMax smartphone--first mobile WiMax phone of any kind that I'm aware of--and Sprint plans to promote it as an early entrant and fast alternative to competing networks. The Android-based phone will receive data at up to 6 Mbps, the rate Clearwire promises in its WiMax-covered cities. (Clearwire says typical downstream rates are 3 to 6 Mbps, with 10 Mbps bursts.)
The Android-based phone will work on 3G CDMA and 4G WiMax networks, and is designed for video. YouTube, for instance, will kick into a higher-quality mode showing video on the 4.3-in screen when the phone is on a 4G network. The phone has a kick-stand for hands-free viewing, and HD video output for a big screen. The phone also will have full Flash support; it must be relying on the Flash 10.1 release due out later this year.
The Evo will also be a hotspot-in-a-phone, sharing a 4G connection with up to eight other devices over Wi-Fi.