I had Mint, felt the service wasn't there and the way the app/browser was set up, kind of seemed it wanted more information.
After looking around, I jumped on US Mobile. Registered under an alias within my city through a physical sim. I pay monthly using a privacy card.
So far, so good. knock on wood

I guess the bigger question that comes from this, is do I go with a Steamdeck or with a Legion 2?
A follow up would be, do I wait for the Steamdeck 2