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.

Add Yahoo as a preferred source to see more of our stories on Google. You can scan the QR code on your own smartphone without needing a second device. Photo: Getty Images QR codes can be scanned ...

Whether for online banking, retrieving tickets or quickly logging into various internet services - QR codes are ubiquitous. However, it can be a little complicated if the code is only on the cell ...