You can’t unlock the Pixel 3 with your voice
For quite some time now, you’ll be able to unlock your Android phone with an “OK Google.” With “Unlock with Voice Match,” you could do this with past Google Pixel phones. But now Google quietly took this feature out from the latest Pixel 3 and Pixel 3 XL phones. As it explained on its support page, “On Pixel 3 phones, you can’t unlock your phone by saying ‘Ok Google.’ Instead, you can use the Google Assistant on your lock screen.” This change takes away a lot of functionality. You used to be able to make calls, send messages, and access third-party apps via Google Assistant voice support without needing to unlock your phone.