Smartphone Pages?

In order to get smartphones to render the articles like the IPhone (without showing the pc site's modules and menus) do I have to recreate the articles strictly in html as stand alone files in a sub-domain outside of Joomla?
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I guess another way of saying what is happening is that when I click on a page it reverts back to my default Joomla template for the pc site instead of using the mobil template.

You can use user agent switcher plug-in.

See some notes on this page http://www.mobilejoomla.com/documentation/12-getting-started/50-help-and-problems.html

Thanks for your reply.
I am using the user agent switcher-plugin but I thought I was only to use the IPhone 3.0 user agent when viewing for an IPhone. Are you saying I am supposed to use the IPhone 3.0 user agent to view all mobile phones?