Cingular 8125

I don't know about the phone, but my experience with WM5 is that it works fine in terms of bluetooth connections to OS X, but you will need this software:

http://markspace.com/missingsync_windowsmobile.php

To be able to sync calendar or contact information. The 8125 is on the supported device list. It was just released a week or two ago for WM5 -- I actually don't have it yet.

 

Actually, I just downloaded the software as an upgrade from my earlier Palm OS edition for $19.99. Worth every penny. Setup is quick and the sync is pretty seamless via USB. I'm just having a problem getting the Macbook and the 8125 to talk. I enter the passkey in the 8125 and the computer says it's connected, but the phone then asks me to set up the connection as a serial port. Gotta figure this one out.

 

I have the Tmobile MDA which is basically the same thing but in a different casing, and it is a great phone. Out of the box OSX is not supported in any form. It doesnt even mount. I have yet to buy missing sync, but alot of people from the HowardForums have said it works wonderfully.