Type USSD codes on your iPhone to access hidden cellular features quickly. Here, we'll list some of the most useful ones.

Your iPhone has secret codes you can plug into the dialer to access hidden options. These codes "interrogate" the phone to find and change various settings or provide information such as your ...

An curved arrow pointing right. Did you know that there are actually a handful of secret iPhone codes? Well it's true, and the features range from extremely useful (like showing your exact signal ...