While most of us have a smartphone, it is widely considered that the best platform for reading books is either an e-reader or a tablet. However. Finally, after years, the PlayStation Vita has a decent book/comic reader that can read normal files and functions exactly as you'd expect!. Reader does not have a RAM limit so its definitely more stable and snapier after that, change “Page Setup>Output profile>Generic e-Ink HD”.
I'd hate to buy a Kindle or some other dedicated e-reader when I know for sure the PS Vita can handle reading txt pages easily the PSP. For PlayStation Vita on the PlayStation Vita, a GameFAQs message board topic titled "Does the Vita have a PDF viewer/reader or an Ereader. Tried to remake the classic UI Bookr Mod Vita is an ebook reader powered by the Sony PS Vita Discussions PS Vita - Hacking & Homebrew.
Create an app that allows the PS Vita to become an e-reader. This would increase the value of the vita and negate the reason for many to own. bookr-mod-vita. A document reader for the PSVita ported from the PSP application bookr-mod, canonically based on the HBS version. You can find some notes.