I have seen problems about echo and voice quality. I have a problem that when I make a call about 50 -60 % of the time the person at the other end does not hear me. I can hear them fine with no echo but they cannot hear me.
I tried deleting and re-pairing the phone. NOt only did this not help but it deleted all my phone book entries. Is this supposed to happen? It took me about an hour to load 30 phone entries to the phone book and to have them disappear whenever I repair the phone is a real pain.