Most sites in mobile view offer option in the footer to switch to full site view or desktop view because in mobile view some features or functions are hidden and some users might want to see the full site view to access those features. Here's an example from m.zappos.com:
However, zappos.com also has a "Mobile Version" option on the desktop site so users can switch to mobile view.
From the UX stand point, why? What are the benefits of providing "Mobile Version" option in desktop view?
The most probable reason would simply be for the mobile users themselves. If a mobile user, whether by choice or by accident, wound up on the desktop site, it gives them an easy and clear way to change.
From a UX perspective, there probably isn't a great deal of point in stretching a mobile layout on to a desktop screen. I can think of two possibilities to provide a mobile-site link:
It increases the visibility of the mobile site itself. The user may not know there is an optimised version they can use on a mobile device, and knowing that may encourage them to try it. Any use of the site increases the chances of buying something.
The user might be using a deficient desktop browser which would suit a simplified site layout better. (This would be a UX reason, I suppose, but I'm sure it's secondary to number 1.)
From my personal experience.
Message Mobile->desktop
Message desktop to mobile
You need to ask yourself: what are the benefits to send my users to mobile version? is it really worth it?
Your mobile version answer with a specific device technology?, ex. feature phones, in most cases the mobile version it's just for specific/fast tasks/objectives
