I assume you mean 1 contact page for mobile and 1 contact page for regular browsers?
We have not implemented any feature in our page assignments that would send users to different pages based on whether they were on a mobile device or not. We've talked about it, but not completed it.
However if you use the Salesforce1 app - you can expose a different set of tabs in the navigation of that app than you do in the browser. These tabs can be overriden with Skuid pages so that you can have a device specific experience.
I was looking for a script that would change which contact form people see in the sidebar based on if they are using a mobile device. I don't really want to show a completely different page, just a different contact form with slightly different styling.
I found a script that works really well, just in case anyone stumbles across this in the future and needs it check here: