There's been quite a bit of buzz since the announcement of Ubuntu for Android, and there's quite a bit of buzz in Hall 7 here at Mobile World Congress. That's where Canonical is showing off just what Ubuntu can do when paired to a dual-core smartphone, and it remains every bit impressive as when we got our preview a week ago.
The basic idea is this: Your smartphone (at minimum a dual-core device) will have a custom Linux kernel. And on top of that runs Android and Ubuntu. They run in parallel; when you plug your phone into a HDMI display, it switches from Android to Ubuntu and you get a full desktop experience.