Transfer type
When you want to send your contact entries, you can combine them all into one file, or you can send separate vCard files.
To set the transfer type, from the Contacts application, tap (or press) the Menu Key 
> Settings > Transfer type.
> Settings > Transfer type.Send as one file - This setting combines all of your contacts into one file. It allows a faster transfer, but some devices can’t receive contact information sent using this option.
Send separately - This setting sends each contact as a separate vCard file. It allows all devices to receive your files.