Important: On phones running Android 8.0 and up, you can’t unlock your phone by saying "Ok Google." Instead, you can use the Google Assistant on your lock screen.
- On your Android phone or tablet running Android 5.0 and up, touch and hold the Home button or say "Ok Google."
- In the bottom right, tap
.
- In the top right, tap your profile picture or initial Settings Assistant.
- Under "Assistant devices," select your phone or tablet.
- Make sure Google Assistant and Access with Voice Match are turned on.
- Turn on Unlock with Voice Match.