Does iPhone have a code scanner?
The QR code might not be scanned due to any of the following reasons: The OS version of the device is not iOS 11 or above. QR scanning is disabled in the camera app. The QR is not detected more than once.
How do I scan a QR code with my iPhone?
You can use Camera or the Code Scanner to scan Quick Response (QR) codes for links to websites, apps, coupons, tickets, and more.