WhatsApp grew into one of the most widely used messaging apps in the world, and its short incoming-message chime became part of daily life for millions of people who hear it dozens of times a day. Because the tone is so familiar, video creators began lifting it from their phones to use as an audio cue, turning a private notification into public shorthand for a message arriving. It remains popular because it needs no explanation: one sound instantly tells the audience that someone is messaging, waiting, or about to interrupt.