Sprint Nextel had won rights to radio spectrum in the 2.5 GHz band to provision fourth - generation services .
Sprint Nextel began to build out a WiMAX network , offering services under the Xohm brand .
Sprint Nextel had won rights to radio spectrum in the 2.5 GHz band to provision fourth - generation services and began to build out a WiMAX network , offering services under the Xohm brand .