For instance, make he.m.wikipedia.com/somthing automatically forward to he.wikipedia.com/somthing in case I access from my desktop.
Topic on Project:Support desk
Make mobile website forward to the regular website in case of non-mobile access
Why? :) And how to identify "your desktop"? Also see https://phabricator.wikimedia.org/T100402
The regular wikipedia looks better on a desktop then the mobile site.
And you can see the browser and the system in the user-agent I send in each page request.