https://www.techradar.com/news/best-unlimited-mobile-plans-in-usa

There’s no easy way to figure out the best unlimited plan in the US (believe us, we just did it). Mobile carriers offer all sorts of different plans, combining talk, text, and data, and then make everything complicated with varying features and limitations. We’re here to simplify the whole process by showing you which mobiles carriers offer the best value data plans with unlimited talking and texting.

We looked at the offerings of dozens of the top carriers in the US to see if they had proper unlimited plans, and to get all the details we could about them. To narrow down the results, we’ve cut out any carriers with data plans that have a hard cap (i.e., carriers that will slow your data speeds significantly for the rest of your plan period after you’ve used a set amount of data). This means only carriers that rely on throttling to address network congestion have made it through. Everything else fails to fit into the same league of “unlimited.”