In the video, a person is seen holding a black iPhone in their left hand and a blue phone case in their right hand. The person is demonstrating how to put the case on the iPhone. They first place the case on the back of the iPhone, making sure to align the cutouts for the camera and buttons with the corresponding features on the phone. Then, they carefully slide the iPhone into the case, ensuring a snug fit. Once the case is on, the person adjusts it to fit properly and checks that the screen and buttons are accessible. The video provides a clear and detailed demonstration of how to properly put a phone case on an iPhone.