Can you install Ubuntu Touch on any Android phone?
I would like to try it on my Xperia E C1505/C1504 phone. If I do then can I go back to using Android?
Ubuntu for Android will provide a way of running Ubuntu alongside Android off of a smartphone when docked. For more information about Ubuntu for Android, visit the link and watch the short video there, What is Ubuntu for Android?.
Also look at the answers to the question: What hardware will the Ubuntu Touch support?.