Dish switching network to AT&T after calling T-Mobile anticompetitive

But Dish and T-Mobile are fighting over T-Mobile's plan to shut down its 3G CDMA network earlier than it originally intended, with Dish accusing T-Mobile of anticompetitive behavior.Against that backdrop, Dish today announced "the signing of a transformative, long-term strategic Network Services Agreement with AT&T, making AT&T the primary network services partner for Dish MVNO [mobile virtual network operator] customers."The AT&T network capacity will serve customers on Dish's "retail wireless brands, including Boost Mobile, Ting Mobile, and Republic Wireless," Dish said. Under our agreement, it is unambiguously Dish's financial responsibility to migrate customers to the new technology in a timely manner, and if they live up to those obligations, no consumers will be negatively affected by the sunset and in fact will receive substantial benefits."Dish then called T-Mobile's response an "unconvincing attempt to justify its blatantly anticompetitive decision to prematurely shut down the operation of the legacy Sprint CDMA network" and said it is "indisputable" that "the accelerated shutdown of the CDMA network likely will harm millions of Boost consumers, many who already face economic challenges.""Dish is not asking for T-Mobile to do anything except honor the commitments it made to regulators under oath and keep the CDMA network operational until at least July 2023," Dish told the FCC.