For a fast way to scan a QR code, just open the Camera app and point the rear-facing camera at the code. The link appears as a notification at the top of the screen.

To learn more about this topic visit the following articles:
Scan a QR code with your iPhone, iPad, or iPod touch: https://apple.co/3jY6kbX
Scan a QR code with the iPad camera: https://apple.co/3wvaHxP
Take and edit photos on your iPhone, iPad, and iPod touch: https://apple.co/3rlNGfF

Additional Resources:
Contact Apple Support for iPhone: http://apple.co/iPhone

To subscribe to this channel: https://www.youtube.com/c/AppleSupport

To download the Apple Support app: http://apple.co/2hFtzIv

Apple Support on Twitter: https://twitter.com/AppleSupport

For more videos, go to Youtube Apple Channel