ViewSonic has unveiled the world's first dual-SIM Android smartphone, the V350. Officially announced at Mobile World Congress (MWC) last week, the ViewSonic V350 Android phone is an active dual-SIM device, enabling the use of two network services simultaneously.

It is mainly targeted at businesses wishing to provide staff with a smartphone that can offer separate numbers and bills for personal and business use.

The ViewSonic V350 Android phone has a 3.5in capacitive touchscreen, runs the Android 2.2 Froyo operating system, and has a 5-megapixel auto-focus camera, a microSD card for extra memory and Wi-Fi, Bluetooth and GPS connectivity.

"Our V350 smartphone is one of the most functional dual-SIM phones on the market," said ViewSonic's Alan Chang. "With Android GMS for access to more than 200,000 Google applications, it has powerful multimedia capabilities and with both SIM cards active, you can place and receive calls on each at any time. The Dual-SIM proposition is compelling and will generate considerable market uptake this year."

ViewSonic also showcased its 10in ViewPad 10PRO tablet and its ViewPad 4 Android phone at MWC. The ViewPad 10Pro is a commercial tablet PC with dual boot functionality between Microsoft Windows 7 and Google Android 2.2 Froyo, while the ViewPad 4 Android phone has a 1GHz processor, a 5-megapixel camera that doubles as a 720p HD video recorder and HDMI-out.