I did a search and didn't really find an answer to my question, so I'll try it. I have the ability to get a Siemens phone (S56, w/ BT), so if anyone has any experiences with that and bluetooth syncing that would great, but more general: Does any device that has bluetooth support syncing with the powerbook? Are there only specific model phones that will work with iSync on the PBook? Thanks in advance. I have not really used BT before so I am just trying to see what all the possibilities could be.