Mobile communication devices in the vehicle

It is advised that you do not use mobile communication Mobile communication devices in the vehicle
It is advised that you do not use mobile communication devices, e.g., mobile phones, inside the vehicle without connecting them directly to the external antenna. Otherwise, the vehicle electronics and mobile communication devices can interfere with each other. In addition, there is no assurance that the radiation generated during transmission will be discharged from the vehicle interior.◀

    See also:

    DTMF suffix dialing
    DTMF suffix dialing can be used for gaining access to network services or for controlling devices, e.g., to make a remote inquiry of an answering machine. The DTMF code is needed for this purpose. ...

    Safety
    Neither the Insurance Institute for Highway Safety nor the National Highway Traffic Safety Administration has tested the 2007 X3. Standard safety features include four-wheel-disc antilock brakes, ...

    Headphones, vehicle loudspeakers
    Connecting the headphones Normal headphones Connect via the jack 1/8"/3.5 mm, on the rear CD/DVD player. Infrared headphones Connection via the infrared interface on the lower edge of the s ...