Let’s break it down. Mapping in an Excel to vCard converter simply links each Excel column to the right vCard field. So First Name and Last Name become FN and N, phone numbers become TEL with tags like CELL or WORK, and addresses map to ADR. An Excel to VCF converter also handles multiple numbers by assigning proper types, and it preserves special characters using UTF-8 so nothing gets corrupted during import. This mapping step is what makes the final VCF file work smoothly on Android, iPhone, Outlook, or any contact manager.