if your thinking of trying convergence using ubuntu touch and ubuntu unity 8 you will need two things
for the computer or laptop wily werewolf, this is well in testing!
this is convergence,
http://cdimage.ubuntu.com/ubuntustudio/dvd/20150517/
and ubuntu touch on you phone or tablet, if its supported! nexus 4/5 or seven and others are suported
https://developer.ubuntu.com/en/start/ubuntu-for-devices/installing-ubuntu-for-devices/
dont forget this is early days, the phone / tablet stuff is pretty solid but the last piece of the jigsaw the desktop isnt going to be ready till at least the end of 2015 🙂
happy hacking