Why are my contacts not syncing correctly between iPhones and iMac?

There is a way to transfer contacts from iPhone to Mac via iCloud. you can follow it.

1.Sign in with your iCloud account and click "Contacts"

2.From the list, select the contacts that you wish to export

3.Click the icon depicting a cog wheel, and select "Export vCard"

Wait for the file to be downloaded on your Mac

supposing that the method does not work, seek help for iPhone Transfer.

Here's also a guide to help you import contacts to iPhone.

Probably you are using different apple accounts on your Mac and Iphone, or go to settings-iCloud and on synchronization for contacts!

Using iPhone Transfer, all iPhone user can backup the contacts and contact's photo to computer as a txt file or a ANTC file. In ANTC file condition, you can protect the file with a password to keep your iPhone contacts privacy.

Use iCloud to sync iPhone contacts to Mac. You just need to run iTunes on your Mac. Open iTunes, and under the info tab, the very top option is to Sync Address Book. Select this and alter the setup as per your requirements, you have fully synced contacts. Another option (this is what I do) is I use FonePaw iOS Transfer to manage my contacts.

The guide:

http://goo.gl/m9baxa

Wanted to add my solve for this problem: For you guys who use gmail, your phone is hooked on there. Change it to icloud.

So in your phone go to Settings->Contacts->Default Account-> iCloud <-- as in it will be gmail, change it to iCloud.

Hope that helps. I did not find this answer anywhere and so I wanted to share with the world

Go to the little black apple logo on the top left side of your Imac. Select it and choose System Preferences. Select Internet Accounts in the third row. Choose and select one of your email accounts. Make sure that contacts is checked. Move on to other email accounts if you have more than one. Close System Preferences. Now check your contacts, your Imac contacts should match the contacts on your Iphone.

I came here to get an answer, but didn't find one. Here is how I resolved my problem.

I found that some of my contacts were in my Google file and not my .Mac file. So I went into preferences and switched my settings to default to Mac. (I don't recall having set it to default to Google, but there you go.)

Then I returned to the lists of all my Contact accounts and highlighted the Google account. I then clicked on File and clicked on Export, and exported it in V-cards to my desktop.

Then I highlighted the .Mac account and clicked on File. Then I clicked on Import and chose the file II had just exported to my Desktop. Took just a few seconds to download – and Bob's your uncle. Took just a minute for the missing contacts to show up on iCloud.

settings>contacts>import SIM contacts>From My Mac or I guess ICloud what ever suits you… you are welcome!