FusionBB has a small screen template made just for mobile and PDA users.
If the FusionBB website you're visiting has this option enabled, you can change the User Template to allow you to easily view the site on your mobile/PDA device.
For information about other Display Settings,
please see this
(Thanks to FBB Developer Josh Pettit, FBB Admin Chris Peterson, and FBB member Scorpio for their input on this topic!)