How to remove duplicate in Row by Excel and other softwares

1. open the contact excel file in Windows 7

2. choice data

3. remove duplicate and keep default selected all

4. to confirm remove duplicated items by entering confirmed key.

5. Done

6. After removing by Excel

7. and to use Remove Duplicate Contacts and Events v.5.1.1 in Iphone 4S Apps to remove some move other duplicated contacts