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

14 secret phone codes that unlock hidden features on your Android and iPhone ...

Discover hidden features to optimize performance, troubleshoot issues, and enhance your Android experience You can use secret codes on Android phones to quickly find hidden features and information.

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 ...