Most simple converters fail to separate phone numbers from a CSV file into individual vCard fields if one column contains multiple phone numbers like "98765XXXX, 91234XXXX." It's a problem when you import contacts from Android to iPhone or vice versa because both devices require that each phone number be in a separate field. For this operation, a CSV to VCF converter tool is necessary, which will not only convert the numbers but will also label them as mobile, home, work, or other categories during the conversion process. Structured CSV to vCard conversion means each phone number is placed in the right place without any manual editing. GainTools CSV to vCard Converter, for example, is a tool that can automatically find multiple values and format them according to vCard 3.0 or 4.0 standards, which modern phones and Outlook can better. First, check the field mapping screen and confirm how the numbers are separated before you export. When they are converted correctly, your VCF file will be imported without any problems and without any phone entries missing or being converted.