In the video, two iPhones are held side by side, and the person is using the messaging app to send messages. The person types "Hey" and then uses the "send with effect" feature to send the message. The effect causes the message to appear in a bubble and then explode into many smaller bubbles. The person repeats this process several times, each time with a different effect. The video shows the person using various effects, including a fire effect, a snow effect, and a rainbow effect. The person also demonstrates how to use the "send with effect" feature to send a message with a specific effect. The video is shot in a well-lit room, and the person's hands are visible as they type and send the messages.