Hello,
Thanks for your post.
I got my iPhone 6 last night. I had an iPhone 5S before running iOs8.
I have 2 cars: 2013 Ford CMAX Energi and a 2014 Porsche Cayenne.
After upgrading to iOS8 on the iPhone 5S, no problem to place and receive call on the CMAX. But on the Porsche it was a nightmare. The calls started then after two ringtones the call disconnected. I had to remove all the devices on my iPhone 5S bluetooth profile and the same on the Porsche. After the pairing was done I push the home button and on/off button. Then the connection was ok.
Now with the iPhone 6. The nightmare is back.
I was able to pair and connect the iPhone 6 on the CMAX. But as soon as I try to place a call, I hear the first ring, then the call is disconnected. Ford Sync even shows me that I just have one reception bar when in reality I have full reception on the phone.
Now for the Porsche, same issue. I was able to pair the phone. When I try to place a phone call after one ring the call is disconnected.
One the two cars I reseted to Factory setting both Synch system and PCM. Reseted the network settings on the iphone 6. Remove all the bluetooth devices, restored the phone. Then pair again the phone same issue.
I tried the wife' iPhone 6 same issue...
Based on this troubleshoot and taking under consideration the iPhone 5S with iOS was working it looks like there is an issue with the iPhone 6.
I was just on the phone with an Apple iPhone Tech support guy who just talked to one senior support guy. He just told me that there is a compatibility issue between the bluetooth used on the iPhone 6 and some car navigation/bluetooth. He told me that the issue is coming from Apple. And a solution maybe be provided at a later time in a patch.
This is where we are standing right now...