Using a mobile phone with Near Field Communication (NFC)
Requirements:
NFC is activated on the mobile phone (see the manufacturer's operating instructions)
The mobile phone's screen is switched on and unlocked (see the manufacturer's operating instructions)
To connect a mobile phone:
hold the NFC interface of the mobile phone (see manufacturer's operating instructions) on mat 
or place the mobile phone on it. To replace a mobile phone:
hold the NFC interface of the mobile phone (see manufacturer's operating instructions) on mat or place the mobile phone on it. Follow the additional prompts on the media display to replace the mobile phone in one or two phone mode More.
If required, confirm the prompts on your mobile phone (see the manufacturer's operating instructions).
If your mobile phone supports wireless charging, it will be automatically charged via NFC when it is connected or replaced. A requirement for this is that the mobile phone is on the mat More.
If you want to charge a mobile phone without connecting it to the multimedia system, lay it on the mat without beforehand unblocking the screen.
Further information can be found at: Mercedes-Benz mobile Homepage