I had a Samsung Galaxy and although it worked in the Audi and Discovery 3, it dropped the bluetooth link the E89
The dealer loaned me a demo 3 series and it did the same.
At the time I was looking for a new phone and and loved the Samsung handset but as they would not help me sort the problem - I bought Apple. Now my wife and I have iPhones, iPads and an iMac.
They might have sorted the Bluetooth protocol now but their attitude/customer care means I'm an apple convert.
The iPhone, albeit a 5s, works without a hiccup!