The Hidden Energy Cost of Always-On Displays

The Convenience That Comes at a Price

In our increasingly digital world, always-on displays (AODs) have become a standard feature on smartphones, smartwatches, and even some laptops. These screens provide instant access to notifications, time, and other essential information without requiring a full wake-up of the device. While this feature offers undeniable convenience, it also comes with an often-overlooked cost: energy consumption.

AODs work by keeping a portion of the display illuminated at all times, even when the device is in standby mode. Though manufacturers optimize these displays to use minimal power—often leveraging OLED technology to light only necessary pixels—the cumulative effect of constant low-level illumination can still drain battery life faster than expected.

The Silent Battery Drain

Studies have shown that always-on displays can consume anywhere from 5% to 15% of a device’s battery over a full day, depending on brightness settings and usage patterns. For users who rely on their devices for long hours, this can translate into needing an extra charge sooner than anticipated.

Moreover, the impact extends beyond individual devices. With millions of smartphones and wearables using AODs globally, the collective energy demand adds up. In an era where sustainability and energy efficiency are critical, this hidden consumption raises questions about trade-offs between convenience and environmental responsibility.

Balancing Functionality and Efficiency

Manufacturers have made strides in reducing the power footprint of AODs. Techniques such as low-refresh-rate modes, monochrome displays, and motion-activated wake-up help mitigate energy loss. However, users also play a role in optimizing efficiency.

Simple adjustments—like reducing brightness, limiting AOD usage to essential notifications, or scheduling the feature to turn off overnight—can significantly extend battery life. For those who prioritize longevity over constant visibility, disabling AOD altogether remains the most effective solution.

A Thoughtful Approach to Technology

Always-on displays epitomize the modern demand for instant accessibility, but they also remind us that convenience often carries hidden costs. As consumers, being mindful of how we use these features can help strike a balance between staying connected and conserving energy.

In the broader context, this discussion invites us to reflect on how small, everyday technologies contribute to larger energy footprints—and how smarter choices can lead to more sustainable digital habits.