Those who did not try Ubuntu Phone on any Galaxy Nexus, see this video to create an ideea on it. Canonical’s aim is to release a working Ubuntu Phone system by the end of the year. The development is making progress, but we need to see which vendors will accept to sell Ubuntu based phones. (Hope Samsung and HTC will)
Jono Bacon, the Ubuntu Community Manager playing arround with Ubuntu Phone, in the following video. He receives a call and text, uses the web browser, he uses social networks runs some Ubuntu Phone apps, and others.