I felt it worth including some iPhone Font information. Whilst I am not sure if the Fonts are user selectable there is a definite attempt to help the user with the option to rotate the font from upright to horizontal. The text automatically reformats and enlarges to allow more text to be displayed. You can even tilt the phone diagonally for an even better solution. I think there is a zoom feature too.

Visit YouTube. http://www.youtube.com/watch?v=TENrXdp3-U8

As for written text I will endeavour to report more later.