I have found the Apple blue-tooth ear-set completely unusable after upgradinmg to iPhone OS3.1. The communication between the blue-tooth and the phone (both ways) breaks up so badly I cannot hear/understand anybody I attempt to speak with and they report a similar experience listening to me.
I have found the problem to completely clear up -if- I turn off Wi-Fi networking. It appears that there is an interference problem. With Wi-Fi turned on I find the blue-tooth connection again unusable.
Thank You for listening.
Orignal From: Report: Apple Blue-tooth ear-set/OS ...