One of the most important and really cool feature of Yotaphone 2 is the always on, e-ink screen. Here is a video tutorial in English on how to read a book with the back screen:
Reading a book on the back screen
Reading on the back-side – FBreader
Probably the most exciting thing on this phone is the e-book-like e-ink display on the back-side of the YotaPhone. So, how to read? At first, I had difficulties… as I wanted to read my own books, files, that I own