How do u unlink contacts

Unmerging contacts is done manually- contact-by-contact. If you are going to unmerge 10 entries in your Contact list, you need to do the unmerging process 10 times. 

1. Open your Contacts app. Phone > Contacts
2. Go to the merged contact you want to unmerge. (Contact Profile Page)
3. Tap on the Edit button located on the top-right corner of your screen.
4. Scroll down to the bottom of the Contact Profile Page. You will find all the merged info of the contact (Brad Office Brad Home, Brad email address). On the left of each of the merged info is a tiny red circle.
5. Tap the red circle of the entry you wish to unmerge.
6. Tap on the Unlink button.
7. Tap on the “Done” button located on the top right hand corner. You’re done unmerging one Contact.
8. Repeat entire process for any merge contacts you may still want to unmerge.

Going through the unmerging process will restore the different merged info into separate Contact entry. After unmerging, there will be a separate Contact entry for Brad/Personal Brad/Office and Brad/email address. 

Before merging or unmerging contacts on iPhone, it is recommended that you back-up your Contacts List.