I have yet to be in a restaurant in the US where they bring the reader to the table. I wish they would, but I've never seen it (Minnesota, US, other places in the Midwest).
The ones here will do it if you want to pay via phone *Pay. Obviously not every restaurant has updated to that though, especially mom and pop joints. I usually leave the tip in cash anyway. Covid has put an end to my restaurant visits for a while though except the occasional outdoor place.
