Unfortunately, at least with the Sprint branded Treo 650s running the latest firmware, the pairing often times out, leaving one with the impression that it just doesn't work. You also have to manually create a connection option for a the Sprint data network, and select the "use without asking" option when you want to use DUN rather than have the 770 scan for WiFi networks. At that point, I can usually start an app on the 770 that requires a connection, and the 770 and the 650 will start a repairing operation that generally (but not always) succeeds, and then the DUN connection works.

The issue here is that I'm not Joe Sixpack, I'm an experienced developer used to dealing with beta devices, and willing to try anything to get this to work. Most the the Treo 650 owners I meet haven't even figured out how to get rid of the automatic keypad lock, if they had to deal with this kind of BS to get on the web using DUN, they'd give up and return the 770 to CompUSA.

Considering that the Treo 650 on Sprint is one of the more popular DUN capable devices in the US, I still am perplexed that Nokia chose not to test this combination, since Sprint doesn't offer a BT DUN capabile Nokia phone as far as I know. One might say, well of course, they'd only test it with Nokia phones, but they chose to develop a device that is sold with the promise of seamlessly interroperating with both WiFi and BT DUN environments. Its clear that their testing must have only been done with GSM phones considering the difficulty of setting up the device for a non GSM network. Not that it isn't possible, just that the average use is going to fail when they try.

Still, I see the longer term possibility for the 770 and will gladly fight with it to get my DUN connectivity with my Sprint Treo 650 when I need it, its just too cool.

Michael