As you may know, the first phones that use Ubuntu Touch by default are Bq Aquaris E4.5, Bq Aquaris E5 HD and Meizu MX4, but Canonical’s mobile operating system is also supported on the LG Nexus 4 phone.
While the Bq Ubuntu Phones were available at launch only in the European Union, they also become available in the US. Unfortunately, it has been created to work for the European carriers and because of this, it lacks LTE (4G) support. Unlike Meizu, which has been created to work with all the frequencies.
If you ask me, this is an important step, because the American phone market can afford a new player in the game.