Last modified: 2014-02-12 23:55:09 UTC
The "Mobile view" link hidden on the bottom line of the desktop view (at least in Vector skin) seems to bring up the mobile format for the current page, but as soon as you follow a link you're right back to desktop view. It seems to be sending to eg http://en.wikipedia.org/wiki/Something?useformat=mobile -- so that parameter is immediately lost when following links.
(Tested in iPad first-gen, iOS 5.0)
*** This bug has been marked as a duplicate of bug 29503 ***