I am using the iPhone 4 with OS 4.1 and having a horrid time with BlueTooth on my Toyota built in system. My Bluetooth works great with other devices like my stereo, and headset. But I would like to be able to have a static free conversation with my built in car system. For the record, the car system is fine, as my 3GS had no issues, nor do any number of other brands. However even the 3GS chokes up with the Toyota Navigation Blue Tooth with iOS 4.1. Am I the only one with these issues? I keep hoping 4.2 will bring better support, but as of now it is nearly unusable for me.