What is the best way to tackle this? Is it possible to detect a user-agent (to see if they're on, say, an iPhone) and then from there display dynamic content that is appropriate for their device? Also, if it was done this way... Would google index multiple versions of the same page? If website.com/index.php had a regular version and a mobile version, would the mobile version come up in mobile search results? Trying to get an idea for how this works, so any help at all would be much appreciated. Thanks in advance for your time!