“Hey Siri” not working on your AirPods Pro or 2? Here’s …
Turn on “Hey Siri” for the device you connect your AirPods to. Update your device to the latest available software, not including beta versions. Return your AirPods to their case and hold the setup button to reset them. Reset All Settings on your device, turn on “Hey Siri,” and pair your AirPods again.