In the video, a person is holding two smartphones, one in each hand. The person is using the phone in their left hand to take a picture of the phone in their right hand. The phone in the left hand has a purple background, while the phone in the right hand has a black background. The person then closes the app on the left phone and opens the gallery app to view the picture they just took. The person then compares the two phones, showing the difference in screen size and resolution.