This is one of several low battery alerts used on Pantech SKY Vega phones between 2010 and 2016, a period when the South Korean brand was known for its Vega Android handsets. The third variant in this set is a short system tone rather than a spoken warning, which made it easy to rip, share, and reuse once the phones themselves became outdated. It survives mainly through nostalgia, retro phone compilations, and creators who want an authentic early smartphone sound instead of a modern notification.