I don't know about S60, but I beamed all my contacts from my Sony Ericsson P990i using Bluetooth. I can't remember if I used the built-in UIQ contacts program or the third-party DreamConnect. Whichever it was, all the contacts went over to the N810 in one transfer as a file of VCard data. N810 contacts imported this file quite happily, although it only seems to have extracted names, telephone numbers and email for each contact.