There’s a relatively easy way of making sure your WordPress site or blog is readily accessible from the growing number of smartphones and mobile devices out there, whilst still retaining much of the functionality and style that you’ve worked so hard to create with your site.

WP Touch is a handy, free plugin that will simply reformat your WordPress site if it detects that is being viewed on a mobile browser. It doesn’t change the viewing experience in a traditional browser on a desktop or laptop, but works behind the scenes to make your site that much easier to view and navigate on a mobile device.

http://wordpress.org/extend/plugins/wptouch/