How to scan QR Codes with iPhone camera (any version of iOS)

Alternative methods for scanning QR Codes with iPhone 4-11
The above instructions should work for any version of iOS. However, in the case that you run into issues,
there are two alternative methods to scan QR Codes with iPhone as described below.
Wallet App
The wallet app can scan and save particular QR Codes,
such as those needed for boarding flights or entering an event.
It’s useful if you’d like to access these QR Codes later on.
To scan QR Codes with the Wallet app, use the following steps:
