Sprint’s finally giving the thumbs up to its Xohm service, currently being tested in the DC area. Xohm is Sprint’s deployment of WiMAX, and it has spent millions getting it ready as a 4G network to replace the current 3G system.

WiMAX is widely regarded as the successor to current generation cellular service, and Sprint’s the first one out of the gate with implementation. Look for devices to start appearing this summer as it starts turning on the service in markets across the country.