Backups from old phones are often full of mixed VCF files that have different formats. I had a situation where I wanted to convert the contacts from an Android phone and a backup of an old Nokia. The process was made effortless by using
GainTools vCard to CSV Converter. It gave me the freedom to
convert vCard to CSV in bulk without losing the data accuracy. Even if the contacts had more than one number and some special characters, they were taken care of properly. The free demo allowed me to try a few files first, and I was very pleased that it kept everything consistent. After the conversion, the CSV files became the new contacts import source for Google Contacts and Outlook. Anyone dealing with old or mixed backups will find this tool a convenient way without the risk of losing their data.