14 Pro in 2022. Battery impact The Always On Display feature does consume energy, although the Samsung Galaxy S7 series phones, and later phones that made the feature popular are built with AMOLED screens that turn off black pixels. On today's AMOLED phone displays, it is true that only a few pixels may need to be turned on but they do need to be moved to prevent pixel burn in. Colors, sensors and processors all consume energy while AOD is in use, which leads to an extra consumption of roughly 3% battery. On LCD displays, the backlight has to be turned on, even if only a part of the screen is showing information, so this feature consumes a significant amount of power compared to a notification LED. Some LCD displays use Transflective LCD. It uses a layer called a transflector. It is typically made from a sheet polymer. It is similar to a one-way mirror but is not specular. Some smartwatches such as the Pebble Smartwatch and the Amazfit Stratos also use this technology. Under bright illumination (e.g. when exposed to daylight) the display acts mainly as a reflective display with the contrast being constant with illuminance. Typically, an ambient display solution which turns on the screen only when notifications are present, remains on, but turns off when they are dismissed will consume the least amount of battery power while still drawing the user's attention when required, in contrast to an Always-on Display which will keep the screen on, all of the time, to show some information, even if notifications may not be present. Since the date and time are less essential than battery status or notifications which may require the user's immediate attention, an AOD can be customized in many app-based implementations to only show notifications or selectively choose what is shown. Scheduled on/off times In some phones, the Always On Display/Ambient Display feature can be toggled on a schedule, such as during nighttime, or when the proximity sensor detects that the device is in a pocket. There may be an option for the phone to keep the screen on only when there are notifications to be acknowledged or dismissed by the user. References Mobile phones Display devices