Siri is a personal assistant built into iOS. You can ask Siri to send WhatsApp messages, place WhatsApp calls, or read aloud your unread WhatsApp messages.
Note: These features are only available on iOS 10.3 and later.
On iPhone X, XS, XS Max, and XR you can press and hold the side button > Turn On Siri.
Visit the Apple Support website for specific information on how to use Siri and how Apple handles data sent through Siri.
Note: Opening WhatsApp with unread messages will reset the notification badge. Siri will then interpret this as if there were no unread messages and therefore won’t read them aloud.