Phone notification sounds became part of everyday life as smartphones made instant messaging the default way to stay in touch, and the short chime soon became shorthand in online video for an incoming message. Editors and meme makers adopted it because audiences recognise it instantly without any explanation, and it works across languages and contexts. It remains popular because it is short, clear, and instantly creates a story beat, whether the message is good news, a joke, or an interruption at the worst possible moment.