Hey Siri, OK Google on iOS will now open the Google Assistant

How to Launch Google Assistant with Siri

Google Assistant for iOS Gets Support for Siri Shortcuts, Making It Easier to Access

This is what happens when you ask Siri to open up Google Assistant

Can you use Google Assistant and Siri together on your iPhone? - Quora

Google Assistant iOS app adds Siri shortcut, making it easier for iPhone users to say Okay Google

How to change the voice of your digital assistant

How to Set Up 'OK Google' on iOS and Android

How to Replace Siri with Google Assistant on iPhone, iPad

Google Voice adds better Siri support, still lacks Assistant - 9to5Google

Google Assistant iOS update lets you say 'Hey Siri, OK Google