Note that Google Lens works only when you login with Google account and your device must be connected to a network.
Method 1: press and hold the home button or press Google Assistant Button to enter Google assistant -> touch the Google Lens icon at the bottom of the screen.
Method 2: touch the “Photos” app -> select a photo -> touch the Google Lens icon
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When you open the Google lens viewfinder, the lens will continually analyze what you see to show you results in real time. Options include:
1) Translate: Point at text, then tap capture to translate.
2) Text: Point at text, then tap capture to copy or scan.
3) Auto: Point at objects, then tap capture to learn more.
4) Shopping: Point at items, then tap capture for product details.
5) Dining: Point at a dish on a menu, then tap capture for details.
6) Places: Point at building for details.