I had Bluetooth headsets for years, but now that I have a Cingular 8525 phone I'm amazed at how good the quality of this headset is with that phone. After 3 weeks, I only had 1 dropped connection, but not the call, one touch of the headset on button and I got re-connected immediately. Every call is very clear and I could easily hear the person on the other side, even when I'm on the street with cars driving by. There were cases when I had to adjust the headset to hear the caller better, but those where rare and when a large truck was driving by or when the caller was at a very very noisy area. I believe this headset good quality stems from the fact that this is a great quality headset, it is Bluetooth 2.0 and the phone is also bluethooth 2.0. It's really important for reviewers disclose which phone they are using this headset with because as I found out during the last 2 years that it was Treos had a bluetooth problem not my 4 other Bluetooth devices.