Google assistant on my lava iris 820 smartphone in the following way.
Explanation:
Google Assistant on your smartphone, here’s a complete ready to use guide
How to download and install Google Assistant
How to set up google assistant .
Link your voice
To use Voice Match, you must link a Google Account to the Google Assistant device. If you have multiple Google Accounts, you can choose which account you want to use.
Open the Google Home app Google Home.
At the bottom, tap Home Home and then Settings Settings.
Under “Google Assistant services,” tap More settings.
Tap Assistant and then Voice Match and then Add devices.
Follow the steps.
When you link your voice and use the Google Assistant in US English, the Google Assistant will automatically acknowledge when you ask it for something politely.