The Nokia C2-03 is one of those uncommon handsets that can operate with two SIM cards simultaneously.

Why would one need such a feature? Well, there are plenty of folks around the world who use multiple phones, be it for having separate personal and work lines, or for simply using the services of two carriers at the same time.
These are the people the C2-03 is aimed at as it spares them the trouble carrying around that second handset might be.
Other than that, there is nothing special about the Nokia C2-03 as it is merely a modest feature phone powered by the Series 40 platform. It offers a 2.6-inch resistive touchscreen display, basic 2-megapixel camera, 2G connectivity, and a slide-out numeric keypad.

Samsung Star 2
Nokia X1