iPhone Bluetooth intermittent failure. Now no phonebook

[edco]

Greetings
When I did the latest update on my iPhone 6s plus, it caused a problem that it was supposed to fix, except I had no issues with BlueTooth connectivity in my '11 X5 E70. Now I had a problem. Specifically, some calls worked, some calls I had to put on speaker in order for the other person to hear me.

I crawled through the internet and found some advice that suggested deleting the BMW connection from my phone and "re-pairing" from scratch. I did that today and so far, so good with audio, BUT my phonebook isn't showing up. I read the manual and one issue was "you may have too much data" to be loaded.

So, I spent this evening eliminating a lot of numbers of people I have no reason to talk to anymore.

But I thought there might be a way to "push" it to add the phonebook on my phone, and came here for any advice...

Thank you in advance
Ed in NJ