The characteristic underneath dialogue presents dynamic visible components, resembling photos, animations, or informational shows, when an Android gadget stays inactive for an outlined interval. A standard occasion entails a rotating gallery of pictures, a clock show, and even system standing data showing on the locked display after a user-defined timeout.
This perform serves to forestall display burn-in, a phenomenon the place extended show of static photos leaves a everlasting ghost picture on the display. Traditionally, it provided important worth on older show applied sciences like CRT and early OLED panels. Whereas trendy gadgets are much less inclined, the characteristic retains worth by offering an aesthetically pleasing and informative idle display show. Furthermore, it might supply restricted display safety by minimizing total display on time.