Send the following on WhatsApp
Continue to ChatSync Postbox contacts with iPhone & Google Contacts https://jamesmills.co.uk/2011/08/08/sync-postbox-contacts-with-iphone-google-contacts/
Sync Postbox contacts with iPhone & Google Contacts https://jamesmills.co.uk/2011/08/08/sync-postbox-contacts-with-iphone-google-contacts/