Scan a QR code with the iPhone camera
You can use the Camera to scan Quick Response (QR) codes for links to websites, apps, coupons, tickets, and more. The camera automatically detects and highlights a QR code.
Use the camera to read a QR code
Open Camera, then position iPhone so that the code appears on the screen.
Tap the notification that appears on the screen to go to the relevant website or app.
Open the QR code reader from Control Center
Go to Settings > Control Center > Customize Controls, then tap next to QR Code Reader.
Open Control Center, tap the QR code reader, then position iPhone so that the code appears on the screen.
To add more light, tap the flashlight to turn it on.