Coders have a storied tradition of creating back doors in programs (or sometimes just fun little Easter eggs) that can only be accessed with a special "key." This has happened for almost as long as ...

Android and iOS both have built-in tools to easily open QR codes from screenshots.

If you suspect that your phone’s calls or messages are being forwarded without your consent, two simple codes—*#21# and *#62# ...

Discover the secret world of USSD codes that unlock hidden menus, features, and quick access to phone information on your Android device. Test these codes at your own risk, but be aware that any given ...

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 ...

Every Samsung phone has secret cheat codes, and it's a shame that more people don't know about them. Type these and see what happens.

Nathan is a tech journalist from Canada who spends too much money on gadgets. You can find his work on Android Police, Digital Trends, iMore, Mobile Syrup and ZDNET. Nathan studied journalism at ...

If the Phone Link app gives you an Invalid QR code error while pairing your mobile phone with a Windows 11/10 PC, these solutions will fix the problem within moments ...