Hello, This is NXP's Technical Support.
Thank you very much for writing.
vCard is a message format that is transferred as a payload in an NDEF message. If you download our NXP TagWritter App for Android, you should be able to create this message. Unfortunately, since this message structure, corresponds to NFCForum, we don't have an NXP official document for sharing.
Best Regards,
Fabian
