Nokia recently announced two dual-SIM handsets, the Nokia X1-01 and the Nokia C2-00.  Nokia promises that these phones offer a Dual SIM experience “superior to any other models on the market, remembering the settings for up to five different SIM cards – and with no compromise on battery life, music features or messaging”.
Nokia’s handsets are Dual-Standby, which means you can always receive notification of calls and messages on each account rather than having to switch your SIM cards on and off.  They also offer long battery life, up to 43 days standby time and 13 hours talk time on the Nokia X1-01, and 9.2 days standby time, with 5.75 hours talk time for the Nokia C2-00.

The Sony Ericsson Xperia X10 is the manufacturer's first Android phone. It is rather high-end, equipped with a 1GHz Snapdagon processor, 4-inch TFT screen with a resolution of 480x854 pixels and an 8.1-megapixel camera with autofocus. However, its software features are just as impressing. What it adds to the Android universe is a personalized interface, called UX (from User eXperience). Basically, UX combines various entertainment and social media features.

Samsung Galaxy S I9000 is an Android 2.2 Froyo smartphone featuring a vivid, super-bright 4.0 Super AMOLED display.The Samsung phone sports a 5 megapixel camera sensor on the front and a VGA secondary camera on the rear.