- Apple iPhones with iOS 11 or higher (2017 or later)
- Most Android-based devices with Android 8 or higher
Smartphones with these minimum software versions will support QR code scanning with the built-in camera. No app is required.
Older smartphones with prior versions of software will require separate apps to view QR
codes. Free QR code scanning apps for Apple and Android:
https://www.digitaltrends.com/mobile/best-qr-code-scanning-apps/