As stated in the title I just got one of these for father's day. I'm not much of a phone person so I'm trying to get it going. was able to put music and some movies on it with no problem, but books I can't. I was given a bunch of books (mostly) in pdf file some in mobi as well as epub. My question is can I put those files to be accessed by this phone? If so do I need an app to do so? I used search to find solution with no luck. Can anyone help an behind the times fellow?!