Type in a few numbers and symbols on your dialer and discover powerful tools, system info, and settings buried deep in your phone.

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 ...

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 ...