Conversion of vcf files to dbk file format

Old Sony Ericsson backups (.dbk files) are essentially ZIP archives. Inside these files you can find contacts.vcf file and possibly other files. If you want to import your VCF file to it to it, you need to swap it for the one in the DBK file. If you need contacts from both .vcf files, you would have to merge them first using any of the available solutions for vCard format merging.

Open VCF file    Open DBK file