We live in upstate NY, in the Capital region, and T-Mobile is fine in the populated areas, but not so great outside of the more populated areas. We also find that to be the case when driving from Ny to Fl, when going through the mountainous and rural regions, there’s no signal or it’s very weak.
We also had a lot of issues when we went to Iowa for a wedding a couple years back. We now have a basic Tracphone flip phone for emergencies as a backup since it tends to have better coverage where the tmobile smartphones don’t seem to have a very usable signal. (As we didn’t have the flip phone in Iowa Im not sure how well it would work there.)
Our T-Mobile plan is a grandfathered plan, so it’s relatively reasonable for us as we don’t usually go above our 4gb quota (but that might change once we start traveling full time since we won’t have tor cable internet service, which I’m sure is significantly higher in data usage, especially since we’ve retired this past Fall.)
We have also been considering an additional AT&T data service for either our truck or another cell phone plan, as a backup for our T-Mobile plan for instance when there’s a dead cell signal and data dead zones once we start full timing.