The problem with smartphones isn’t the phones; it’s the small size of their screens and the keyboards. The Cello Corp’s has a neat solution for Windows mobile phones: It’s the RedFly mobile companion, and it has a full keyboard and screen featuring a single platform that runs off your smartphone, which means no syncing and full security. It’s compact and lightweight, making it very portable. The RedFly has multiple output options for presentations or desktop connections. It should be out by March for $500.