I have a Motorola H15 BT which I have used with my previous 3G and 3GS iPhones. It's ok, but kinda quiet. When I got the iPhone 4 on launch day and connected it to my H15, the sound quality and volume were both improved! Really happy with the iPhone 4 / H15 combo! But the other day after I "upgraded" the software on my iPhone 4 to iOS4.0.1, the bluetooth now sounds more scratchy/staticy (if that's a word). Just wanted to see if anyone else experienced degradation on their BT headsets/devices since updating to 4.0.1. Is there a way to roll back to 4.0? Thanks!