Formatting errors after changing PST contacts to VCF usually happen when contact fields are not mapped or exported properly. Some common issues are missing phone numbers, broken address fields, unreadable characters, duplicate entries, or incomplete company details. The best way to avoid this is to use a proper PST to VCF conversion tool instead of doing a rough manual export. Softaken PST to VCF Converter can help because it scans the PST file and shows a preview of contacts before conversion. This allows checking contact details like name, email address, phone number, company name, address, pin code, and other fields before saving them as VCF files. Also, make sure the PST file is healthy and choose the correct destination path for the exported VCF files. After conversion, import a few sample VCF contacts first to check formatting. If everything looks correct, then move the complete contact list to Android, iPhone, iCloud, or another address book app.