Forgot my phone this trip, but I wasn't worried about having to show the QR code based on what people said here.

The IO asked for the QR code. I had to get my iPad connected to the wifi and find it in my mail app, holding up the line a bit. I asked the IO if it was showing on her screen, she said it wasn't. I wonder if it was because I went through the thai line with my wife?

Next time I'll print it out just in case they ask for it again and for whatever reason I forget my phone. It might be a good idea to at least have the TDAC number with you if not a copy of the email they send you with that info and the QR code.

-David