How to make Siri use WhatsApp instead of Messages in iOS 17
In iOS 17, you can choose which app you want to use after dictating your message. Here’s how to change what app Siri will use to send a message.
Changing messaging apps with Siri
With iOS 10, Apple opened up Siri to developers to allow them to have their apps be controlled by Siri commands. This meant that you could use the power of Siri to book a ride with Uber, send money through Square Cash, and — most conveniently — send a message through a third-party app.
