I tried to go to the Android marketplace to download the pdf app, it says that I do not have a phone associated with the account. I have a tablet not a phone. (And I have wifi.) I want to view pdf and epub files. I have them saved to my sd card that I put in the tablet. (But when you look it says no files found, it just shows the folders.) I am assuming the apps that come with it do not allow these files to be read. (But the box says it can read pdf and epub files.) My kindle app works fine. Thanks for the help.