80% iPad mini. 20% my phone, a Galaxy S3 Edge.

(there was some discussion on this in a blog post I made recently on Bookseller (http://www.thebookseller.com/futurebook/content-curation-community-new-apple-books-325205) and as a result I found this WSJ article suggesting phone reading might become the primary platform, and 50% say they read at least some of their books on their phone. (http://www.wsj.com/articles/the-rise-of-phone-reading-1439398395). Curious your thoughts on that?