If the vCard files are in different versions like 2.1, 3.0, or 4.0, merging them manually can be risky or difficult. So don't worry, here is the best option is to use Softaken Merge vCard  software. It is a simple and secure tool made exactly for this purpose. It can merge vCard files from different versions and formats into one single and clean VCF file without any technical errors. All your contact information is preserved, including phone number, email, and contact note. The tool also allow you review all contacts before final merging process because if it preview option, so you know everything is correct. It runs smoothly on all Windows OS,  and it is easy to use, a solution designed for both personal and business uses. A safe, reliable, and quick way to combine VCF Files effortlessly.