Recently, I found out that my backup contacts included mixed vCard versions like 2.1, 3.0, and 4.0 that made import fail on my phone. When you try to upload large files with different standards, they usually break. The best way is to split the VCF file into smaller parts without changing the version compatibility. I tried different free VCF splitters and saw that some of them had formatting issues and missing fields. Finally, I resorted to
DataVare Split vCard Software, which can read different vCard versions and split contacts without corruption. It also keeps all the fields unchanged, and you can accurately
split VCF files. This split vCard software is an offline tool and therefore, it is much more durable than online tools when dealing with version-based contact data.
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