Sure, but it didn't matter how Sprint's 800 MHz was down there, since we have 1900 MHz LTE on the DAS. I'd rather my T-Mobile iPhone used the Sprint Legacy 1900 MHz LTE signal that's available down there than the 600 MHz 5G/LTE macro network, which is congested as we share it with a major transit hub in the area. My phone will hop over to the Sprint signal when it loses the T-Mobile signal entirely, but it's a hard transition to "Roaming," not seamless like the Sprint "keep" sites are around here.
It's still got to be better than Sprint's 800 MHz was, right? 🙂
At some point that DAS will have to be accounted for by the T-Mobile Network Folks. It's probably on some list somewhere with a plan to either upgrade it or shut it down.