Here is a simple trick on how to activate the facial recognition feature of Google Photos on your Android and iOs devices.
This trick will help you override the constraint of the facial recognition on Google Photos, being available to countries outside the United States. As you may already know, there's an important note on Google Photos that says "facial recognition feature isn't available to all countries" but, with the help of this trick, you will have full access of the feature.
How to Activate the Facial Recognition Feature on Google Photos
1. Go to your Android phone settings, select “Apps”, then select “Photos” under the “Downloaded” section and click the “Clear Data” button to reset your Google Photos app.
2. Go to the Google Play store and download TunnelBear or Hola or any of your favorite VPN apps.
3. Open the VPN app and connect. It will essentially trick Photos into thinking that you are connecting from US, a country that is supported by Google Photos for facial recognition.
4. Open the Google Photos app, scroll past the wizard screen and then under Settings, enable the option that says “Group Similar Faces – Auto Group photos by matching faces.”
You can even disable, or uninstall the VPN app, and then launch Google Photos again and tap the blue search button. You should see a list of faces that Google Photos was able to detect from your uploaded photos. And the feature will automatically become available on photos.google.com.