Case in point: the Notes app can actually scan documents without the need for any other software. First, open the app and click the Camera icon, and then tap Scan Documents. Place ...

When you need to sign and scan a document or don't have a proper scanner ready, your iPhone will do just fine.

Although you can scan a QR code with your iPhone locked, you won't be able to follow the link without unlocking it — so we recommend unlocking your phone to make the process smoother.