Fujitsu F-07C is the most unique smartphone on earth. Why? Because it dual boots Symbian and Windows 7. This hybrid is also called world smallest PC. It runs on 1.2GHz Intel Atom Z600 CPU, a 32GB eMMC SSD, and 1GB LPDDR400 RAM, packed underneath a 4-inch SVGA display. You can click photos using its 5-megapixel camera on the back and with a VGA front-facing shooter. About the battery it last for 600 hours on standby and 370 minutes on talk time in mobile phone mode, but works for just two hours when using Windows 7.