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 idea is that your phone becomes a mobile PC, switching from Android into full desktop Ubuntu mode when you dock it to a bigger display, keyboard and mouse. But just how well does it perform? When is it coming? How is it coming? And will tinkerers be able to install it for themselves?
Canonical let us into its London office today to try out the software and pepper one of its engineers with questions. First, the good news: Ubuntu for Android is everything it's been claimed to be. It's a functional desktop OS that sits alongside Android, shares the same kernel and has full read / write access to everything on your phone (the connectivity hardware itself plus contacts, emails, videos, apps and pretty much everything else.). It's also ready for ARM-compatible Ubuntu apps, potentially expanding the range of things your phone can do.
CONCLUSION : 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.
There are two videos here that would explain more details about ubuntu for android