if in east texas, all major carriers have places they dotn work... most reliable is verizon.. except for Lufkin area... ATT is pretty strong except for along 259 near Diana and a couple other spots....
I have ATT and it works great for me. But if I go up 259 thru lone star and dangerfield,it is horrible. But I seldom go up that way. I use the prepaid, it is a little more expensive than straight talk, Metro, Boost, etc, but a lot less than a contract.
Verizon. Still a few dead spots here and there, but fewer than other carriers based on my observations of friends' coverage. We'll even have good service in that secluded little spot on Caddo Lake that I'm planning to take you