My iPhone 7+ with IOS 10.02 will not stream audio for more than a few seconds in a BMW 4 series with the latest multimedia software. I have researched the issue and others with BMWs and other makes seem to be experiencing the same-or similar streaming issues. Moreover, once the fault occurs the mobile telephone connection then becomes flakey as well. The only thing I can do is to disable the audio streaming option in order to have a phone that works in the car as a phone. It has been stated by a few people that new releases of iPhones quite often have Bluetooth issues that are software driver related that seem to be fixed after a few updates. My old 6s+ with IOS 10.02 does not have this issue btw. I guess my point is that it is pretty hard to believe that this software failure made it through the testing process. It creates a lot of angst among users and I am surprised it is not on page 1 of this forum! If anyone has a magic fix I would love to hear about it.