A small alignment tool can be attached to your cable (there's a micro USB cable included, should you want / need to use it), and once you get your phone placed just right on the SOLO, you slide the alignment guide up to the bottom of your phone.
You can adjust how
small or large it is, and depending on the reading device or app you use, you can often change font type, font weight, text
alignment, spacing — and with
tools like Calibre you can pretty much format an ebook any way you want if you're determined to do so.