i use my phone. i have an omnia 2 and it is so handy to keep my books on it also. and i can do internet and email. my son has the droid x and really likes it. it has a bigger screen than mine does. i will be upgrading to the thunderbolt soon. i use calibre to format all my books. you can usse it to change formats to whatever you need. many free ebooks are available. gutenburg is a great one for the classics.