At least here, TMo has enough for 15x15 NR and 10x10 LTE, but WCW's 600 licenses start almost immediately west/northwest of here (they have 10x10 IIRC). WCW has 10x10 of 700 plus CLR-B here, but no AWS or PCS, so T-Mobile not having any spectrum to play with here on mid-band and 600 isn't WCW's fault.
The fault lies squarely with AT&T for that...thanks to acquisitions of CricKet (who acquired Pocket Communications earlier) and Cellular One/Dobson (who bought CellOne/Dobson earlier), they have 5x5 of B12, 2x10x10 of AWS, CLR-A, and 10x10 + 2x5x5 of PCS. Verizon has 15x15 of PCS and 10x10 of AWS (plus their nationwide 700 upper-C). T-Mobile has 10x10 of PCS and 10x10 + 5x5 of AWS alone, plus 15x15 of PCS A-F, but there's no contiguity with TMo unless they did some sort of swap with AT&T, which I doubt would happen.
In San Angelo on the other hand, yep, WCW has a whopping 20x20 of AWS, leaving AT&T with 10x10 and T-Mobile with 10x10 of B66...and a mere 5x5 of PCS, with a graveyard of a couple providers (Flat Wireless/ClearTalk, Leaco/NMobile) sitting in PCS and AWS in addition to WCW taking 7.5 MHz of PCS...and Verizon taking 20x20. Sprint has its usual 15x15 + 5x5 though, so eventually T-Mobile won't be quite as bad. Oh, and VZW and WCW split CLR.
Sigh. In attempting to put the database back on my phone this evening after doing an update, it obliterated the database again. It had been working as normal for several weeks.
I think I'm going to [finally] apply the Android 10 update and see what happens. Maybe it'll help...
EDIT: When I rebooted, it came back up with data included. No idea what to make of it. Reimported from the file just in case, and it remained present, so we'll see, I guess.
Separately, how hard would it be to make it possible to filter the Neighbor Notes? I noticed earlier today that I'm seeing neighbors on Bands 12 and 2 pretty often. Naturally, it tries to look for notes for those PCIs with PLMN 310120, even though they're clearly T-Mobile neighbors. Would it be possible to add a "Sprint transition mode" or something where it matches Band 25/26/41 neighbor notes to 310120 and other neighbor notes to 310260?