I love being able to read books with my smart phone. If you haven't tried using eBooks, I definitely recommend it. You can make highlights, bookmark, and leave notes just like it a real book. Additionally, you can make the font bigger and change the color of the pages to make reading easier.
The best thing that I like about eBooks is that you can carry as many as you want anywhere you go. I remember before smartphones, whenever I traveled, I would carry 2 or 3 books with me. It was such a pain. Now, I can read anywhere, anytime. If you haven't done so already, check it out!