Currently, Dex can only pull saved contact names from the phone when syncing with WhatsApp. If a number is not saved, only the phone number is displayed, since WhatsApp does not expose the user-set “profile name” via sync. Users have requested the ability to see WhatsApp profile names automatically without manually saving each number in their phonebook.

This feature depends on WhatsApp providing access to profile name data via their API. If/when that becomes available, supporting it would save users significant time and improve contact management in Dex.