A frustrating error message may appear for some iPhone users when they’re using a computer to restore an iPhone or install an ...

Unstructured Supplementary Service Data (USSD) codes are strings of characters primarily used by developers and technicians to troubleshoot smartphones. You can use these codes to learn more about ...

Apple is back at it again with quality control, but this time, it is a hidden QR code on the iPhone's screen that it engraves during production, something the company can only see. This is a form of ...

Use these codes to forward calls, pay your bill, check balances, etc. Some of the codes work only on certain carriers or devices. One of the codes also might erase your data, so use with caution. I've ...

QR or Quick Response codes are one of the most popular ways to access information on the go. Invented in 1994 and once considered the wave of the future, part of the QR code revival that started in ...

You’ve probably never seen the QR code printed on your iPhone screen because it’s so microscopic that most people have no idea there’s a QR code there. A new report from The Information details how ...