The sound comes from Facebook Messenger, Meta's messaging app that launched as a standalone app in 2011 and grew from Facebook Chat. Its default notification tone became one of the most recognizable phone sounds of the 2010s as Messenger reached billions of users. Creators later lifted the ding for use outside the app, placing it over edited chats, memes, and screen recordings to instantly fake a real incoming message. It remains popular because the cue needs no explanation and still triggers the reflex to check a phone.