I used 14 secret codes to unlock menus of settings on my iPhone and Android - how it works

Dial these secret short codes on your phone to unlock hidden settings, secret menus, and powerful features most users never discover.
CNET

Don't Remember Someone's Number? Here's How to Use T9 Dialing on iPhone Instead

I don't know my wife's phone number. If I needed to call her and I didn't have my iPhone, I wouldn't be able to reach her. And according to a poll by WhistleOut, I'm not alone. About 17% of ...

A group of us ditched our smartphones for a month. It changed us.

The fliers that appeared in our D.C. neighborhoods about the challenge offered few details beyond a toll-free number.
Gadget Review on MSN

5 Hidden Samsung Galaxy Tools & Settings That Make iPhone Users Jealous

Samsung Galaxy phones contain hidden features in settings menus that surpass iPhone capabilities for privacy, photography, ...