Every site I tested worked on mobile browsers.
http://biopharmamash.com/viewtopic.php?t=2010105 http://foro.murenacidos.com/showthread.php?tid=41269 https://planeswalkers.org/viewtopic.php?t=64262 http://wirtualnapolityka.cba.pl/showthread.php?tid=11029 https://my-mobile.eu/viewtopic.php?t=65000 https://phantom.everburninglight.org/archbbs/viewtopic.php?pid=778948#p778948 http://47.88.101.141/forum.php?mod=viewthread&tid=479087&extra= https://democratstoughlove.com/showthread.php?tid=18149 http://47.88.101.141/forum.php?mod=viewthread&tid=475730&extra= http://forum.animogen.com/viewtopic.php?f=76&t=1584175 https://www.xes-roe.com/community/profile/marianpatnode57/ http://www.horsecity.ru/phpBB3/viewtopic.php?f=7&t=241504 http://xn--b1afkfa5bn1b.xn--p1ai/forum/index.php?PAGE_NAME=message&FID=2&TID=42815&MID=48020&sessid=48e3f56a5fc8589bd05c61a91d3520bd&TOPIC_SUBSCRIBE=Y&FORUM_SUBSCRIBE=Y&result=new