Sir, Recently I RESET my phone. After contacts are restored using .vcf file, when i download whatsapp and duo, there will be 3 linked contacts in the single contact. When I unlink, 3 contacts with the same name will be in the contact list, then if i delete a single contact from that 3 same name contacts, all 3 will be deleted automatically. Please solve it. Linked contacts should not be present in the contacts.