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.

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 ...

Xcode allows you to live preview your iOS views using Xcode Previews, so you can see how the app appears as you're actively developing it. Here's how to use them. Xcode is Apple's development ...