You can use Circle to Search to learn more about things you see on the web, in an app, or even in your photo gallery.
To activate it, long press the Home button or navigation bar at the bottom of your screen, then drag your finger across the area you want to search – circling, highlighting, or scribbling.
You can also tap your screen once to open a selection box, which you can drag and resize over the text, image, or video you’re curious about.