wifi or hot spot qr code

Do you mean can iPhones connect to a Wi-Fi network through a QR code? Yes they can. Open the Passwords app > Select Wi-Fi > Select the Wi-Fi network you want to share > Select Show Network QR code. Others can scan this and connect.

What was your question?

What is shooting up a QR code? If you’re asking if your iPhone camera can use a QR and link to a website to establish your WiFi service with a provider, yes, it most certainly can.