U.S. Cellular has announced enhancements to its third annual $1 million Calling All Communities campaign. In May, the company revealed that it was increasing the number of winners from 10 to 18 schools in the community-driven campaign. Thousands of dollars is awarded to schools. Now they've announced the school garnering the most votes will receive $150,000. The next 17 runners up will receive $50,000 each. Between Sept. 9 and Oct. 6, anyone 18 years or older can vote at the U.S. Cellular store on Washburn Way.