Hi Paul,
That's one point I missed off. Some API functionality is *only* available to manufacturers and MNOs.
Compared to Android - where anyone can change anything - this is a most unwelcome development.
I understand that for a brand new mobile OS, MS might want to restrict some access on the grounds of security - but this does smack a little of "Only big companies can play". Not a smart move.

Thanks for your comment.

T