xmpp@j2me

Bombus http://bombus-im.org/wiki/bombus/help_english known to work
    English Translation
BombusMod   Translation
Talkonaut http://www.talkonaut.com/   claims to support some kind of voip
Lampiro   http://lampiro.bluendo.com/features
Jabber Mix Client   http://jabbermixclient.sourceforge.net/
Jabber Mix Location   http://jabbermixclient.sourceforge.net/location.html implements locationpublishing