Obox Mobile allows you to set a seperate static home page for your mobile site than your main site. By default, the plugin will show your post archive.
You can set your home page template in wp-admin, under → → Home Page
Select the page from the Display menu.
This function is useful if you are using a plugin which works off a specific page that you’d like your users to see when they use your mobile site (eg. Contact Form 7).