From the MB site
“Available in new Sprinter and Metris vans, the Communication Module ensures the broadest range of connectivity from the start, quickly transmitting data with the permanently installed 4G LTE SIM card. As the prerequisite for using Mercedes PRO connect services, the Communication Module makes your daily work even more efficient.“
The go-live of Mercedes PRO connect in new Mercedes-Benz Vans marks the start of this innovative connectivity package. Enjoy the benefits of Mercedes PRO connect and bring your business to a new level of efficiency. Start today, and explore any of the services of Mercedes PRO connect free until 06/30/2021. 
And when you connect drivers, vehicles, and managers with Mercedes PRO connect, you can push your business even further.
Seems to be For commercial use. Not recreational.
“Today I shall behave as if this is the day by which I will be remembered.” – Dr. Seuss