Your smartphone is full of surprises. There's an app if you want to use your phone as a magnifying glass or scanner. Tap or click here for hidden apps on your smartphone and how to find them.

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

If your Android device is not scanning a QR code, there could be a number of potential issues at play.

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What is a QR code? A QR code (short for Quick Response code) is a two-dimensional barcode that can be read by your smartphone camera. QR codes provide quick access to product information, promotions ...