You can use your iPhone to scan documents, QR codes, and other files using the Notes app and your camera.

You can scan a QR code using the camera on your smartphone, tablet, or computer — however, you may need to download an app.

Scanning a QR code with your phone is a common request, and should be simple, right? But it's not always as obvious how to do it as it should be. Read on for straightforward, illustrated instructions ...