The Always-On Display (AOD) feature has become increasingly common in modern smartphones. This feature allows certain information, such as time, notifications, and battery status, to remain visible even when the screen is off. Although it offers convenience, AOD also raises a major question: how much does this feature affect battery life?
How AOD Affects Power Consumption
AOD constantly displays visual elements on the screen. As a result, the display must remain active at a low level, which naturally requires energy. However, today’s smartphones are designed with specialized technology to keep consumption efficient.
One of the key factors that influences how much battery AOD consumes is the type of display used.
OLED vs. LCD: Which Uses More Power for AOD?
- OLED Display
OLED screens light up each pixel individually. Only the pixels that display content are active, while the rest remain completely off. This makes OLED significantly more power-efficient for AOD and is why most manufacturers enable the feature only on OLED devices. - LCD Display
LCD panels use a constant backlight. Even if only a small icon is displayed, the entire panel requires illumination. This makes AOD consume more power on LCD screens, which is why many LCD phones either disable AOD or offer a limited version.
Refresh Rate and Animation Effects
Some smartphones apply low refresh rates for AOD, such as 1Hz or 10Hz. This reduces the number of updates per second and helps the display use much less energy. Animated AOD themes, on the other hand, may consume more power because the screen updates more frequently.
Pixel Power: Tiny but Continuous
Even if AOD uses very little energy per pixel, the total power consumption can add up over hours of operation. The percentage may vary depending on brightness, screen size, and type of content displayed.
AOD does increase battery usage, but the impact depends largely on your device’s display technology. OLED smartphones generally handle AOD more efficiently, while LCD devices may experience higher power consumption.
This is why many manufacturers continue to refine display technology to ensure that AOD delivers convenience without draining the battery significantly.