My iPhone SE w IOS 11 will pair with Blutooth but iDrive will no longer pair phone. I've been to the dealer and it will not pair with original audio serial no. Or 0000 or 1111. Genius says they are aware of many complaints - Apple basically says BMW is responsible to bring existing iDrive into spec w Apple. Bottom line - owners need to step up and pressure BMW to upgrade software or pressure and assist Apple with IOS patch I have a 2011 E90.