This tone comes from Vivo's Android system sounds, where it is catalogued as a simple internal notification rather than a song or branded jingle. It is the kind of short alert built into a phone's settings for messages and app updates, which is why many listeners recognise it immediately even without seeing the screen. Online, the same clip is shared and reused as a ringtone, a notification sound and a realistic phone effect in short videos, keeping it in circulation long after people stop noticing it on their own handsets.