Unlinking phone and computer

Yes, this is cross posted to Mac and Windows. LOL So don't forget to
hit "Reply All" when answering this post.

A friend of mine has linked her SO's iPhone 6S, I think, to his Windows
8.1 computer. She did this trying to get the contacts from his old
pre-Android Verizon phone to the iPhone. She thinks she did this by
using Bluetooth, which makes no sense to me.

Don't ask me why she did this, and I don't want to ask! LOL

I have a previous thread in the Mac group about getting the contacts moved.

Now she would like to break that link between the two. I'm sure it can
be done. I use a Tracphone (mobile devices don't work where I live) and
have no other devices that will sync, and actually no reason to do so.

Her searches on the web have been unsuccessful, and she is smarter than
the average user.

Since I don't use any devices that do this, I don't know what terms to
use for searching to find out how to do this.

Anyone know of a good web site that has easy to follow instructions for her?


--
Ken
Mac OS X 10.11.6
Firefox 49.0.1
Thunderbird 45.3.0
"My brain is like lightning, a quick flash
and it's gone!"