We have a basic mobile template available for mobile phone users. A request was made to add http://www.tapatalk.com/ support as well.

Tapatalk is a forum app for iPhone, BlackBerry, Android and Nokia. The app provides super fast forum access to any vBulletin, IPBoard, phpBB and SMF forums that have activated Tapatalk. Forum owner can download the free plug-in to activate Tapatalk in your forum.

I don't have an iphone, black berry, android or nokia, so I can't test this. Please let me know if it works fine.