Asus ZenUI was the Android interface used across the company's ZenFone phones and tablets, and its system sounds included short alerts for everyday events like a low battery warning. This particular chime circulated beyond the devices as users shared phone sounds for edits, compilations, and soundboards. Because most viewers have heard a similar warning on their own phone, the tone reads instantly as running out of charge, even without an image. That shared recognition is why creators still reuse it for power-down gags and tech-fail moments.