I just looked it up and the $40 T-Mobile prepaid plan has a 10GB data limit. Tbh that’s probably plenty for most people, but it’s not unlimited. Their $50/mo option is unlimited, with caveats (such as throttling once you’ve used too much data).

They are going to monitor your traffic and throttle based on estimated video streaming speed on any of their plans.

Still pretty good compared to ATT and Verizon. Unfortunately I’m stuck with the provider I’m using since they seem to be the only one with good cover wage in my area.