We were there in spring 2022, and had zero Verizon coverage but passable AT

The site indicates 2 to 3 bars for ATT, but you should read the reviews for any more details that might be mentioned. We have Verizon and a Booster and we had nothing. We used the free wifi at the visitors center which is available 24/7, but is not real strong.

We were there several years ago and had zero AT&T coverage. We had to drive down out of the park for coverage.

with our cell booster we can stream AT