They can be great time-savers, but they're not always obvious in how to use them, particularly if you have an older Android phone. Here's how to scan a QR code with any phone.

If you scan a malicious QR code, scammers can get your information in several ways. The link could infect your phone with malware, although it is more common for the QR code to take you to a fake ...

On Android, navigate to the Wi-Fi network’s page to pull up a QR code that your friend can scan on their phone. How do I share my Wi-Fi with another phone?