The function underneath dialogue presents dynamic visible components, corresponding to pictures, animations, or informational shows, when an Android system stays inactive for an outlined interval. A typical occasion entails a rotating gallery of images, a clock show, and even system standing info showing on the locked display screen after a user-defined timeout.
This perform serves to stop display screen burn-in, a phenomenon the place extended show of static pictures leaves a everlasting ghost picture on the display screen. Traditionally, it supplied vital worth on older show applied sciences like CRT and early OLED panels. Whereas fashionable gadgets are much less vulnerable, the function retains worth by offering an aesthetically pleasing and informative idle display screen show. Furthermore, it could provide restricted display screen safety by minimizing general display screen on time.