Sony Mobile has unveiled its Android-powered Xperia sola smartphone which features its new floating touch navigation technology that allows users to navigate the phone screen by hovering their finger above the screen rather than touching it. The device is NFC-enabled, has a 3.7-inch screen, a 1Ghz dual-core processor, 3D surround-sound technology and runs the 2.3 version of Android with the option to upgrade to Ice Cream Sandwich in the summer.