I think I remember that in the days of iOS 6 it was possible to get the iPhone User Guide in hardcopy braille. Apple removed users' ability to do this a while back, but it seems that they have reintroduced it.
It is now possible to download .brf files for Apple product user guides from the vision accessibility pages of the Apple website. You can also order an embossed hardcopy version of these user guides.
This version of the user guides seem to only be available in Unified English Braille at the moment.
Admittedly, the versions of the user guides available are a little outdated (for example, the iPhone User Guide is for iOS 10.1), though almost all of the functionality described in the user guides is very similar to the current version of the software, and I am posting this because it is simply another way of accessing the user guides and may be convenient for some people.
Is this something you are likely to take advantage of?