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

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 ...

There's a hidden language that's part of the GSM standard that can unlock hidden features on your smartphone. You can dial codes to check your bill, data usage, forward calls, hide your caller ID, and ...

Short codes for Android smartphones can be used in several way, from pulling up information about the device, to communicating with the network service provider, as well as quickly accessing functions ...