I saw that he was talking about a Treo. I'm quite familiar with a PDA verses a Smartphone. The former has a touch screen, the latter does not. (An over-simplification, but more or less accurate.) The device platform itself, however, does not necessarily determine the compatibility. Bluetooth chipsets are often the same between the two platforms. (Broadcom, Motorola, etc.) I'm not convinced it is a hardware issue, rather, it is likely a software issue. (That can be solved through the OS, or through a firmware upgrade.)

The reason I brought up the Q is that others may read this thread (through a search or otherwise), and want to know what devices are found to work. They now know that the Sprint version of the Q works. The application differences between a Smartphone like the Q, and a Treo are not vast. In many cases, an individual may be quite satisfied with a Smartphone like the Q. (The interface is very Blackberry-like.) That said, if they are trying to decide between two devices, this may swing them in one direction or another. The reason I limited my comment to the Sprint Q is that I have not tested the Verizon Q. Verizon is known to limit capabilities of their Bluetooth implementations...so I did not include them by merely stating that "the Q works."

The differences between WM5 and WM6 will not likely solve this. The Microsoft stack for Bluetooth isn't always used. The beta of WM6 has shown no difference in Bluetooth functionality that I can see.

Joel