Merge Duplicate Contacts & Remover has following options:
1. Merge & Remove duplicate contacts
2. Delete contacts with no name, number, email.
3. Backup and Restore contacts (in .vcf file)
For merging and deleting duplicate contacts following options available:
1. Duplicate Contacts (where all contacts are identical) : Here app deletes duplicate contacts.
2. Similar Phone number (only phone number number in all contacts similar) : Here app merges contacts and make a single contact.
3. Similar Name (name in all contacts are similar) : Here app merges contacts and make a single contact.
4. Inside Duplicates (Same number is stored two times in one contact) : Here app removes other numbers within contact.
5. Duplicate Email (Same email id in all contacts) : Here app merges contacts and make a single contact.
Using this app, you can fix your address book easily.
Note: Please make sure that you review all duplicates and backup your contacts before merging your contacts.