Excellent, because Smartphone is used in the car as Navi.

Smartphone is used as Navi. About the car radio adapter works beautifully. Noise sounds are present, but do not bother, because I am the one hand, fully focused on the road, on the other hand am extremely grateful that I the "friendly aunt" in the Navi leads with secure voice in the right direction and on the right track. The cable can be run smoothly along, so that the adapter can be easily inserted into the MC-compartment and remains there during the entire trip well in the cable guide groove (on the back). I'm very satisfied. But sensitive ears could interfere with the noise sound when listening to music already.