As we already mention it in the past, all mobile phone running Symbian UIQ3 system are not natively supported by Mac OS X, as Apple decided to not update Symbian support further than version 1.0
Well, things might change as reported by Simon:
An iSync-dedicated plug-in for the P990i was released on my-symbian.com forum. It seems to be derived from an undisclosed version developed for the P1i, and is reported to work only with P990i loaded with the last firmware update. Several users have successfully used it.
http://my-symbian.com/forum/viewtopic.php?t=33135
Another plug-in should give m600i owner the possibility to sync their favorite mobile phone with their Mac it did not work with mine, but one might need to further investigateDo not hesitate to report your success or f
