Originally Posted by
draver
The QR code on the banner takes you to a T-Mobile app or site where the purchase options are available.
On Android it goes to something called the "T-Mobile Prepaid eSIM" app which seems to be primarily for tourists.
I don't know if it also autoconnects to the airport WiFi, but that would make sense.
I don't think that's possible. You can put Wifi details into a QR code, but I don't think you can put Wifi details PLUS a URL. That said, I think anyone that's cluey enough to setup an eSIM is going to at least suspect there's free wifi available in an airport.