In a handful of areas, I notice TMobiles speeds vary wildly, even with plenty of spectrum, and what I would expect to be few users.
Case in point, a 'rural’ LTE on B4 with 20x20 on a colocated site will push 160Mbps alone.
TMobile sites in my area that are not on Colo or not on a building typically max out around 140Mbps with both B4 20x20 , B12 5x5 and B2 10x10 aggregated, while those that are Colo end up pushing well over 200Mbps., adding in B12/B71 will bring close to 300Mbps. Only the colocated sites currently have been upgrade to 5G.
When I go out to other places, they appear to have upgraded some sites, but have capacity issues. San Simeon, CA has been upgraded to 5G in April with B4 20x20, B12 5x5 and B71 10x10 as well as n71. The issue is that regardless of day or night, you will have buffer issues, and be lucky to reach 0.5Mbps. 3G/2G were unusable. Interesting enough, sites on either side were B4 20x20 only and typically no issue and seeing +120Mbps… of course they were.. Colocated.