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 ...

Practically everyone uses a smartphone these days—but did you know that there are some secret codes to unlock information on ...