U.S. Cellular is the fifth-largest full-service wireless carrier in the United States, providing national network coverage and industry-leading innovations designed to elevate the customer experience. The Chicago-based carrier has a strong line-up of cutting-edge devices that are all backed by a high-quality network in big and small cities and rural communities. Currently, 94 percent of customers have access to 4G LTE speeds. U.S. Cellular was named a J.D. Power and Associates Customer Champion in 2014 for the third time in four years. Visit your local Knoxville,IA store to check out some of the special offers available.