Combining several VCF files seems straightforward at first; however, the second you start doing it, things begin to become complicated, with loss of numbers, duplicates, and incomplete data.

There is a manual way of combining your VCF files using programs like Microsoft Outlook or even your cell phone, and merging them. But honestly, this only works when you have very few contacts. With more files, it becomes confusing, and the chances of duplicates or missing info increase.

A simpler way is to use a tool like Softaken Merge vCard Software. You just add all your VCF files, and it combines them into a single file without touching the actual contact details. Names, numbers, emails—everything stays exactly as it should be.

What I liked about this solution is that it really saves time. There is no need to open each file separately or look at each contact manually. The files will remain untouched and safe so that even if later on, you have to change something, everything will be fine.

In other words, if there are not many files, you should do it manually. But in case of several VCF files, using some application would help.