Many thanks for your answer, I try to better explain the problem:
after pairing procedure (discovery BT and give the BT pass key pushing R/T button) I didn't see the bluetooth mobile phone on my nav screen instead my mobile phone see BMWxxxxx and ask me the BT password.

Reading the documentation my BT support till 4 mobile, now I have only the bmw phone with sim plug, and it works fine. The problem is to pair another mobile phone.

Probably I' am wrong..... any help will be appreciate.