U.S. Cellular Sends $40 Million Creative Account to Leo Burnett
The mobile network operator had worked with MullenLowe since 2012

U.S. Cellular spent nearly $44 million on media last year, according to Kantar Media.
U.S. Cellular

Last month, mobile network operator U.S. Cellular named Leo Burnett as its lead creative agency, expanding its partnership with the agency while ending its relationship with MullenLowe.