Hello, our ix35 came with Navi (Original of Hyundai). Does anyone know which manufacturer is behind it? My problems: 1. Somehow there is no central location for the volume settings to each other of the individual functions of the device, but everyone grumbles for themselves in their own volume – that is annoying. 2. After the Bluetooth coupling, the phone book from the mobile phone is not transferred into the device. It can’t be that you have all this new in the combination In the other car I have (yet) a small Parrot CK3100. This works well with the phone book transferring both handsets used, which is not possible with the device in the ix35. My dealer shows himself at first with both questions.