An up to date compatibility list. People can't buy a phone from outside visible of they can't see it as compatible on the list and they don't have the imei
Yes, the majority of new unlocked phones sold in the us has band compatible for the service. But as the website is not updated you often have to use another device just to get a sim to run on visible. This run around shouldn't be needed.
I had to use my older pixel to order a sim for my galaxy fold device.
