The Samsung Galaxy S8 was released in 2017, and its power off sound was one of the phone's built-in system sounds, designed to play during shutdown. As the phone became one of Samsung's most popular models, clips of its startup and shutdown sounds were shared online by owners and tech fans, then reused as ringtones, notification tones and video effects. The sound remains recognisable because the S8 was widely used, and creators still reach for it when they need an authentic phone shutdown cue.