The other day a colleague was showing me WND Telecom's Web site, where he came across an interesting offering from the Korean phone manufacturer called the DUO Atom. The reason: It supports dual SIM cards and comes with a built-in gravity sensor.
To switch between the two accounts, all you have to do is rotate the phone 180 degrees. The sensor will detect the change in orientation and automatically reverse the screen and keypad to the other phone account.
All of which means that, even when the world is upside-down, you can still make your calls--twice.
(Source: Crave Asia)