If you order a 5 seat Phaeton in Europe and specify a standard VW phone as a factory installed option, the car comes with a little foam insert in the armrest that cradles the phone. It just slides in place, and can be removed quite easily by lifting it up.
Below is a picture of the standard VW phone (it's the same phone used in every model from Polo to Phaeton, although you can order a different model of phone in a Phaeton). Also below is a picture of the phone holder insert, showing the part number, BD0 862 401A. The suffix B41 denotes the colour, in this case, black.
Factory Installed Phone (basic model)
Foam insert to hold phone