Activation of voice assistant can be enabled by changing the multi-function button option. This is done by using the Jaybird App, which can re-assign single (or double) presses of the multi-function button to activate voice assistant.
In the Jaybiird App:
To re-assign the button functionality in the Jaybird App, select ‘Button Controls’ from the Headphones tab, then select Siri (iOS) or Google Assistant (Android) as your preferred double press function.
Once you have re-assigned the multi-function button to do voice assistant command on either a single press or a double press:
Press or double press your multi-function button to activate the voice assistant.
After you hear a tone you can start to speak your commands.