You can set confirmation status to a contact.
When you tap [Set confirmation status], duplicate contacts processing is executed.
When the company same to the company information of a contact are detected,
you cannot set confirmation status of the contact at Cards R for Android, you have to use Cards R for PC.
When the contact same to a new contact are detected,
you can choose to save as an individual contact or to add relation of the existing contact.
In the former case, tap [Save As New], the latter, tap [Add Relation].