why do my contacts not sync between my iphone and mac

why do my contacts not sync between my iphone and mac

why do my contacts not sync between my iphone and mac. There are any references about why do my contacts not sync between my iphone and mac in here. you can look below.

Click here to get more information about why do my contacts not sync between my iphone and mac if you're in U.S.

Click here to get more information about why do my contacts not sync between my iphone and mac if you're in U.K.