T-Mobile is kicking off a new campaign targeting overage fees as part of its ongoing Uncarrier initiative that aims to disrupt the wireless industry in the U.S. Starting in May, the U.S. carrier is eliminating overage charges for all its customers regardless of their cellular plan. The wireless carrier also challenges its competitors to do the same. With this move, T-Mobile is abolishing those additional charges that are levied when a customer exceeds their available minutes or allotted data for their cellular plan. These extra calling minutes or gigabytes of data are charged at a much higher rate and can easily add hundreds of dollars on to a cus