As above, People.
Ordinarily, I sync my iPhone with my 2015 iMac, and it does that without ado.
I'd not tried syncing the iPhone with my new Mackbook Air until now.
When I set up (it largely did this itself) the MacBook Air, it somehow managed to capture most of the details/entries of my contacts and my calendar but, not all of them.
Now, in an effort to have all of the details/ contacts shared between the iPhone and the Macbook Air, I have synced, but to no avail.
Sought entries remain missing from Contacts and Calendar on the MacBook Air.
Any ideas as to why, or how I can fix this, pls?
Both devices have the most recent OS installed.
TIA.