LG has announced that it will unveil its Arena KM900 smartphone at the Mobile World Congress in Barcelona that begins Feb. 11. The phone has a 3-inch WVGA touchscreen with 800x400 resolution and a 5 megapixel camera. The KM900 also has WiFi, A-GPS, and HSDPA 7.2 network support. What is most unique is its 3D touchscreen user interface with four customizable screens. No price or availability date has yet to be announced.