Why doesn't Google Assistant launch when I say, "‍OK Google"‍?

Google Assistant is available for phones running Android 6.0 and later. Before you can say "‍OK Google"‍ to launch Google Assistant, you need to set it up and teach it to recognize your voice. To set up Google Assistant, connect your phone to the Internet and then press and hold HOME /Fingerprint scanner.

For Google Assistant to respond to "‍OK Google"‍ and voice commands, Battery saver in Settings must be turned off.

To check if Battery saver is turned off:

1. Go to Settings.
2. Tap Battery or Power.
3. Make sure the Battery saver On/Off switch is turned off.