If you have duplicate contacts, you can merge them, two at a time.

Watch the walkthrough

https://www.loom.com/share/2cca5f26744941d4946c5fe05825240f

Steps

1. Select My Apps in the top menu

2. Go to the Contacts App

   

3. Select More Options and choose the Merge Contacts option

4. You arrive on the Merge Contacts page.

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5. Select Start Merging ContactsSelect Merge contacts manually

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6. You arrive on the New Merge page

   

7. The merge process allows you to choose a contact whose details will be prioritised if there are any conflicts between fields, i.e. two contacts with information in the same field.

   1. On the left select the contact to prioritise, i.e. keep

   2. On the right select the contact whose details will be copied across to the contact on the left - unless there is a conflict

   3. Press the Save button

8. The merge takes place in the background