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.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. You probably already know how to scan a QR code with your phone. It ...

If you find it inconvenient to share your Android phone’s hotspot details manually, you can create a QR code that others can scan from their devices to connect to your hotspot. It's easier than you ...

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Rather than have a guest select your Wi-Fi network and then enter a fiddly password, just make them a QR code their iPhone can read. Here's how to do it. You wouldn't want to put a QR code for ...