The action of deactivating the light-emitting diode (LED) typically found on the rear of Android-based smartphones, when it is functioning as a source of illumination. An example of this is stopping the camera flash from emitting light after it has been activated as a persistent light source.
Cessation of the light emission is crucial for conserving battery power, preventing unwanted attention in darkened environments, and avoiding potential disruption to others. Historically, this action required navigating through multiple menus; contemporary methods offer more direct and efficient means of control.