**LATEST NEWS!***
Following an email to customer services MB Stuttgart, I have now received a call from someone who knows!
It wont work in my car; 2018 MB models have a tie-in with Apple so through the Appleplay app, those can use their Iphones with the car. Android is not supported full stop.
Also, my car, although registered in 2018 is a 2017 model & Audio20 will not support the function iphone/android/any phone full stop.
I did question why the system shows Internet when you can't access it but got no response.
I'm going to see what happens when I sign up to the "internet radio" function, but I can forget anything else.
Shame but there it is.