The video starts with a close-up of a person's hand holding a smartphone. The screen displays the home page of the phone with various app icons. The person then taps on the Instagram app icon, which opens the app. The app shows a feed of photos and videos from the user's followers. The person scrolls through the feed, stopping at a particular photo. They then tap on the photo, which opens it in a larger view. The person then taps on the comment button below the photo, which opens a comment box. The person types a comment and then taps on the send button to post the comment. The video ends with the person scrolling through the feed again.