I want to be able to share an url on my facebook-page that refers to a page-tab, and have that user redirected to an external site if they are on a mobile.
In the settings for a facebook-app there is a field called mobile web. The explanation says "The Url for your mobile web app that facebook will be dierected to from facebook." Perfect this is what I want.
My app is in sandbox–mode I have added an extrenal url like this: https://myapp.herokuapp.com/
It's the same as the one I use for my page-tab.
I went to the tab on Facebook and copy+paste that url so and can post it as my page
The url looks like this (but with other numbers): http://www.facebook.com/pages/Testelitest/12039123?id=12039123&sk=app_1029381092381
If I click the link on a computer, I come to the page-tab. If I click the link on a mobile device I come to the page that posted the url. I expect to come to the external site.