I have been using a Treo 700w with HFL and no issues.
Suddenly, last week, everyone is telling me my voice is breaking up, can't hear.
Nothing that I know has changed, phone sits in center console, full charge.... but the voice quality suddenly is unusable. If I "Transfer" and talk on phone direct, in same call, it's fine.
Any ideas as to what I can do to correct? I did try deleting the connection and re-pairing, no better. Thanx...

 

I'm using a Treo 700p and have the same problem. People have complained exactly as you say. Hopefully, there will be a fix soon.

 

If you use Treo700w (the one with windows) try hacking it to work with A2DP. Also maybe even try a different bluetooth stack in all (widcomm is recommended)

 

thanks,
any idea how to do either?