As you all know, Ubuntu is a computer OS based on Linux and it seems to be the most used of all the Linux versions so far. Though it hasn't got as many fans as Windows or Mac OS, Ubuntu is one of the best OS’s on the market. The only thing missing is a fully integrated Ubuntu OS with mobile technology such as smartphones and tablets. Android is probably the best proof that Linux is a great OS, as
Android is a “customization” of Linux.
Ubuntu for Tablets and Smartphones, Just a Geeky Dream?

Although attempts were made to use Ubuntu on phones and tablets, we haven’t got an official release of this OS for mobiles. I saw it run on the Galaxy Tab and it did pretty good and on some smartphones, but it’s quite hard to install and customize on these devices.
But now, it seems the wait is over:
Canonical wants to launch Ubuntu straight to the top, right besides Windows Mobile, Apple iOS and Android some time in 2014, with the coming of version 14.04 LTS of
Ubuntu, a long time to wait but it has a...