See that phone in Mark Shuttleworth's hand? It's no ordinary Galaxy Nexus. Instead of Android, it's running a very different Linux-based OS -- the long-awaited mobile version of Ubuntu -- which comes with a new UI adapted for smaller screens. We've played with the phone very briefly and we'll have a proper hands-on video for you shortly, but in the meantime there are a few salient features to report. First and foremost, the UI relies heavily on edge swipes instead of buttons -- much like Windows 8 on a tablet or indeed other mobile
