Since iOS 11, every iPhone can scan a QR code without installing any third-party app. This guide covers every method available on Apple devices.
Method 1: the built-in Camera app
Open the Camera app and point the lens at the QR code. A notification banner will appear showing the destination URL. Tap it to open the link in Safari. Make sure the feature is enabled under Settings > Camera > Scan QR Codes.
Method 2: the Control Centre shortcut
Add the Code Scanner shortcut via Settings > Control Centre. The built-in scanner includes a torch mode handy in dimly lit venues and detects codes faster than the standard Camera app.
Method 3: third-party apps
Apps such as QR Reader or Scan provide a scan history, the ability to create QR codes and security features that verify URLs before opening them.
Troubleshooting common issues
If your iPhone fails to recognise a QR code, check that lighting is adequate, that the code is undamaged and that you are at the correct distance (10 to 30 cm). Cleaning the camera lens can also resolve recognition issues.