Cell Plus, US Cellular Authorized Agent Share: Utilities Cell Plus, US Cellular Authorized Agent Visit Website Request Info 1009 W. Wisconsin St. Ste. B Sparta, WI 54656 (608) 604-6051 About Map About At Cell Plus US Cellular, we are proud to provide our customers with the best wireless solutions. We do so while striving to provide excellence in customer service and a positive impact on community. What's Nearby? Distance: 5 10 15 20 25 50 mi.