How can I customize the tolino background that appears when my screen is in sleep mode? You can change the wallpaper that appears when your tolino eReader is in sleep mode. To do this, go to “More” and then “Energy Saving & Pin Code”. In the “Sleep screen” section, you will see the following options: Show current book View current book cover in full screen Show info panel on book covers in full screen (only when full screen is activated) Charging indicator If you have not made a selection, the tolino face will be displayed in sleep mode.