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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 ...

Here's how to easily access powerful tools, system info, and settings buried deep in your phone.

This code displays the IMEI (International Mobile Equipment Identity) number of your Android phone, a unique identifier essential for identifying your device. This code shows the Specific Absorption ...

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 ...