The tone comes from the system sounds used by phones running Android 5.0 and later, where a short alert warns the user that the charge has fallen to a low level. Because Motorola and Pixel handsets have kept a version of this alert in use, many listeners recognise it immediately from everyday life rather than from a single film, game or meme. That familiarity helped it move onto soundboards and into short videos, where creators reuse it as shorthand for a device running out of power.