The Harmonics tone comes from the Samsung Galaxy S II, the flagship Android phone Samsung released in 2011, where it served as a built-in notification sound. As millions of Galaxy S II handsets spread worldwide, the short melody became widely recognised, even by people who never owned the phone. Later, users ripped and shared the clip on soundboards and video platforms, keeping it alive as a nostalgic Android alert. It remains popular today because it is instantly identifiable, short enough for edits, and tied to a memorable period in smartphone history.