Well, I've tried browsing this site with opera (it has a pretty cool 'small screen' emulation mode) and it seems to work fine.
You should check your profile so that your 'board style' for the forum is set to 'wimpole' as the old 'subza' or 'subsilver' themes will definitely not work well on a phone.
Let me know how you get on!
(Please note - for the technically minded - there's a RSS feed for the forum which lists the top 10 topics of discussion -
rss.php?t=1)