Originally Posted by HarryT
Of the reading devices that I've owned, the only one that lacks a "Back" function has, I think, been the PocketBook 360, and that was apparently a firmware bug. Every other (various Kindles, various different Sony devices, various CyBook devices) has had it, either as a button or via a menu.
EDIT: Just remembered that my BeBook Neo also has a "Back" button.
What devices lack such a capability?
All of the Jinke devices lack this. The BenQ and its ilks lack this. I suspect if we did a survey we would find a lot of devices. I am not sure about Kobo. I don't think any of the Jetbooks have this. Some devices won't follow links at all so they don't need one I guess