Is there a data signal on TMobile from San Antonio to Houston on I10?

If you look at a coverage map, of course it will say 100% of America is covered, but in reality, I'm curious if anyone has tmobile and has made the journey to Houston on I10 from San Antonio.

I am planning to travel during the week next week, but I am on call and need to not lose signal for any (longer than 10 minutes or so) span of time. I am not the driver in this scenario so no reason for concern of safety.

I have a relatively recent 5G phone and don't generally have problems with reception that are phone-related.