The WP Touch plugin gives you the option of creating a custom homepage for mobile which only your iPhone visitors will see. When creating this page, you need to take into account that these visitors are using a very small screen, may have slower internet access and are probably looking for something specific. People using the mobile app are usually on the move and/or wanting QUICK action. Your address, phone number or a way to make a booking/buy something quickly are the most sought after area of your mobile website.