In the video, a person is holding a smartphone and using the flashlight feature to shine light on a wooden floor. The person moves the phone around, adjusting the angle and direction of the light. The camera captures the reflection of the light on the floor, creating a bright spot on the otherwise dark surface. The person continues to move the phone around, exploring different areas of the floor and observing the effect of the light. The video provides a clear view of the flashlight feature and how it can be used to illuminate a dark space.