Credit: Robert Triggs / Android Authority
Some people are finding that the Google Lens button within the image viewer in Google Photos has been replaced by a new search button.
When looking at images with faces, the search button detects the face to find other photos with that face.
It seems the new button is just enhancing the features of Google Lens.

The Google Photos app appears to be testing out a new handy search function. The function has replaced the Google Lens button on the app for some people.

When looking at photos in the image viewer in Google Photos, you may have noticed the Google Lens icon among the share, edit, and delete options at the bottom of the screen. Tapping it allows you to do everything from translating words to finding similar images on the web. However, that doesn’t exactly help with searching for people through your own photos.