Spreadsheets are flexible but unstable for contact reuse. Over time, column changes, formatting differences, and manual edits introduce inconsistencies that break imports and syncing. VCF is a standardized contact format built for portability and longevity. It works across Android, iPhone, Gmail, Outlook and other platforms without degradation. Many users keep Excel for editing but rely on tools such as Softaken Excel to vCard Converter to generate reliable vCard files when contacts need to be stored, migrated or synced long-term.
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