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

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

QR codes have four error correction capabilities: Level L, Level M, Level Q, and Level H. Level L allows the original information to be preserved even if a maximum of ...

Instead, you need to open and register Signal on the new phone and select an iOS transfer. Then you use a QR code to connect the old and new iPhones and a transfer will begin. Be warned — that ...