Usar la aplicación APKPure
Obtener Export Contacts CSV for Gmail versión histórica en Android
Exporta tus contactos a un archivo CSV Gmail ambiente.
Do you have contacts in your address book that are not syncronized with Google and you want to? Such as those on your SIM card, phone memory or any social network...
Quickest way to do so is to export those contacts to a CSV file and then import them to Google contacts through Gmail web interface.