2 April 2021, 12:00 am EDT By In case there is ever a "honeymoon," it is absolutely over between T-Mobile and Dish Network. A year ago, they were practically friends since Dish was instrumental in securing the regulatory approval for T-Mobile to merge with Sprint. But today, Dish is accusing the "un-carrier" of behavior resembling that of a carrier, and the relationship is strained, to say the least. Dish's Boost Mobile is in trouble (Photo : Photo by Bruce Bennett From Getty) Boost Mobile Cannot Provide For 9 Million Users in Time; T-Mobile Shuts Down Sprint CDMA Service Soon On Thursday, April 1, Engadget reported that Dish accused T-Mobile of becoming the monopoly that it spent years fighting in a letter to the Federal Communications Commission.