Tapatalk is a mobile forum application (Android, iPhone, Nokia, BB). It's free (though they have a paid version as well with more features or no ads or something). It supports vBulletin but the forum operator has to install a plugin to get it working. The website says it should only take a few minutes. It might be worth looking into.
I probably can't post links yet but if I could, I'd put a link to tapatalk dot com.
Re: Suggestion: Enable Tapatalk (mobile forum app)
Why you dont enable tgus function?? Is very nice and comford to preview a forum.. I think that will increase the forum traffic.. Many people as I the dont have much time for pc and they reads post fast via mobile and safari, google etc for mobile are not so usefull....
Think about that!