>>>What, if anything, do you use to read text file on iPhone?
>>>
>>>One approach I use is emailing the text file to myself. Then I can open it on iPhone from mail. The downside is that iPhone does not recognize font sizes. For example if I email a text file created with font 12 points or 24 point, the text file, when opened on iPhone, looks like the same font size.
>>
>>Text files don't store a font size. The font size would be a setting in your text editor. You would need a rich text or html file to size the text.
>
>Emailing file as rich text helped a little. I made the text bold font and it makes it easier to read on iPhone. Unfortunately even when I increase the size of the font to any size, on iPhone the size does not change. Thank you.

The first thing I would do is sign up to Dropbox. Moving files around is much easier the emailing.