Originally Posted by NickW
This is bad advice.
The short answer to this is "no, the 6620 is not just an EDGE enabled 6600". People should not proceed on the assumption that because the 6600 works with iSync that the 6620 will.
The long answer is that the 6620 uses a version of the Series 60 software that no longer supports mRouter access via the BT Serial Port Profile. This is the method by which iSync works, as at version 1.5 anyway. This is also the reason that the Nokia 7610 does not work with iSync.
I checked it out, and have to apologize, you are correct.
I have a pre-production 6620 here and it worked just fine, but it doesn't have the Series60 SyncML engine on it like the current 6620 has, to me it just seemed like any other 6600 I ever tried, but with edge radio hardware.
One can only hope that Apple implements SyncML into iSync as that would greatly increase the number of supported phones.