If you are looking for the best tool that removes duplicate contacts from VCF files, there are two ways: manually or by using professional software. The manual method is not recommended because it takes a lot of time, can lead to mistakes, and doesn’t offer many features. A better option is to use a professional tool. I suggest you use MacSonik VCF Duplicate Remover. This software is made to easily remove duplicate contacts from VCF files. Additionally, the utility offers two ways to name contacts in VCF files: you can save contacts based on First Name, Last Name, Mobile Number, and Email, or you can save them using the vCard file name.

To know more: https://www.macsonik.com/vcf-duplicate-remover/