Ok, it took some time, but I've tested every option and here's the result:
PD works nearly perfectly on phones with Opera Mini java app. Things that don't work: Smilies, font changes, effects and the "preview post" option. There are also slight changes in the site, like the login box (it's on the bottom of the page). There is also a disadvantage of this new forum: MobileLeap (site converter for mobiles without java) does not work.