About Nex-Tech Wireless Nex-Tech Wireless, a subsidiary of Rural Telephone, Golden Belt Telephone and Tri-County Telephone, i ... s a premiere wireless provider offering high-tech wireless solutions to residents in 33 counties of central and western Kansas. Nex-Tech Wireless focuses on providing its customers cutting-edge technology including data and mobile services, as well as the latest wireless equipment and competitive wireless plans that provide nationwide coverage. read more