It will be a while. Sprint Customer's will stay on Sprint network only for a while, while TMobile adds capacity to take on 55 million Sprint Customer's. Once the merger is approved they can use and add Sprint spectrum to there towers and there spectrum to Sprint sites to add capacity and density that way. That means higher B25/2 carriers. In my area TMobile has 15x15 B2 currently cause the last 5x5 is on 2G and H+, well the 5x5 A block Sprint currently has can be used to widen B2 to 20x20,hopefully MFBI B25 to.