The universal smartphone holder allows you to use a variety of different phones in conjunction with the vehicle's external aerial. The size of the holder can be altered at the upper and lower edge to offer the optimum fit for each smartphone. The holder is fitted to the pre-installation in the centre console as normal and the smartphone is connected to the audio system via Bluetooth®. The holder's integral aerial, together with the connection to the external aerial, ensures optimum reception during phone calls or when using the internet.Separately available charging cables with micro USB or Lightning connectors allow you to charge your smartphone in conjunction with the universal smartphone holder. A list of currently supported phones can be found at www.mercedes-benz.com/connect.