My small Sony Erricson, which is not designed for browsing the web, and is pretty much only good as an actual phone, will view the forums via this.
It get's really confusing sometimes reading, because you don't quite notice the change in one post to another, and the lack of avatars means I forget who's typing the post I am reading.
Anything more advanced in terms of phones, such as iPhones/Androids and that will use a proper browser and so show the normal view.