How do I like a photo or video?
Just double tap a photo or video to like it or tap ❤ below the post. If you’ve accidentally liked a post, tap the ❤ button below the image to unlike it.
When you unlike a post, the story that you liked the photo or video will disappear from Activity. If the person who shared the post has push notifications turned on, they'll still get the notification that you liked the photo or video.