Some experiences from driving across the country on i-80, I-25, US-287, I-20, I-55, I-10. AT&T had no service outside the cities on I-80 for vast stretches of I-80, I-25, US-287 in CA, NV, UT, WY. Much better on US-287 in TX, I-20, I-55, I-10. Sprint through, I assume Verizon, had them covered much better. But overall, I am disappointed in both carriers' performance on the nations highways. It is shameful.