I would like to suggest you use the DailySoft Split vCard Software for breaking any large-size vCard VCF file into smaller VCF. This application is an advanced utility and has a GUI, which makes it easier to use for both technical and non-technical users. It provides an easy way to split VCF contacts with all properties (name, email address, phone number, location, area code, images, and business) into smaller parts. A 100% secure and safe application that never changes the originality of vCard file data while completing the process. Also, this software works with all Windows OS and vCard versions.