You can activate the voice prompts with Siri, Google, and Alexa by using the VerveLife app. 

Please install the app by following the below links. Other features available with the app include last known location, languages, and battery status. 

iOS:

https://apps.apple.com/us/app/hubble-connect-for-vervelife/id1096510997

Android: 

https://play.google.com/store/apps/details?id=com.hubbleconnected.vervelife&hl=en_CA