Apologies for the delay. I now have Android Auto and Carplay available, so can play radio via my phone, in English! Phone has to be connected via cable, so gets some charge whilst in use, but minimal.
It's not a bad setup, but the head unit shows its age by the screen definition.
I would like a modern head unit, thats autonomous for radio, but it seems that having Theatre Sound is an obstacle to that option.
I have contacted a guy who fitted a modern head unit, and put the original in the central cubby. The two were linked somehow, and he retained front n rear cameras, with theatre sound.
My ideal would be a 12" Tesla style screen, but retaining all 3 cameras and theatre sound.