The video shows a person using a smartphone to download and install the WhatsApp Messenger app. The app is displayed on the phone screen, and the person taps on it to open it. The app's interface is shown, and the person taps on the "Agree and Continue" button to accept the terms and conditions. The video then shows the app's welcome screen, which includes a graphic of a phone with various icons around it. The person taps on the "Next" button to proceed to the next step. The video shows the app's "Enter your phone number" screen, where the person types in their phone number and selects "United States" from the drop-down menu. The person then taps on the "Next" button to continue.