Viewsonic ViewPhone 4s
The Viewsonic ViewPhone 4s is the highest-end device the company announced at Mobile World Congress 2012. It is nothing comparable to the devices major manufacturers were showcasing, but Viewsonic's devices come with dual-SIM capabilities.
The ViewPhone 4s also has a 1 GHz processor, Android 4.0 and a 3.5-inch screen. Also, the display resolution is rather surprising for its size. With a 640x960p resolution, the display's pixel density is of 330 pixels-per-inch.
Probably a great choice for frequent travelers, or people who would like to use multiple carriers at once. It must be kept in mind that this device is aimed towards the affordable market, so it won't be making a hole in your pocket.