In the video, a person is holding a black Samsung Galaxy S21 Ultra smartphone in their hand. The phone's screen is turned on, displaying the home screen with various app icons. The person's thumb is shown swiping up from the bottom of the screen to reveal the quick settings menu. The person then taps on the SIM card icon, which opens a new window. The person then taps on the "Insert SIM card" option, which opens a new window with instructions on how to insert the SIM card. The person's thumb is shown swiping up and down through the instructions. The video ends with the person tapping on the back button to close the window.