Most Android devices currently feature an always-on display (AOD), providing users with a convenient way to check the time and notifications at a glance. However, this functionality has its limitations. Even with the introduction of Android’s Live Updates, users still need to pick up their phones to access detailed information. Recent code analysis by Android Authority reveals that Google is working on a significant enhancement for Android 17, known as “Min Mode,” which could allow apps to fully integrate with the AOD.
What is Android 17 Min Mode and where it lives
References to Min Mode have been discovered within Android’s SystemUI package, which manages the status bar, notifications shade, Quick Settings, recents, volume panel, lock screen, and, importantly, the AOD itself. According to Android Authority, Min Mode is embedded in the AOD’s code path and is designed to enable Android apps to render specialized, minimal user interfaces directly on the low-power display.
Not a replacement—an additional AOD mode
Min Mode is not intended to replace the traditional AOD; rather, it serves as an additional mode. It operates within the same ultra-low-power display state, characterized by limited brightness, refresh rate, and color depth. The innovation lies in its ability to present a full-screen application surface that adheres to AOD constraints, moving beyond the standard clock and notification badges. Typically, when the screen times out, Android displays the regular AOD; however, if a compatible app requests it, the system can seamlessly transition into Min Mode.
How apps hook into Min Mode
According to Android Authority’s analysis, the Min Mode feature is designed to be application-aware:
- Apps can define a
MinModeActivityin their AndroidManifest. - They can register and communicate with an exported
MinModeProviderwithin SystemUI to request activation. - The system assesses which app or activity was active before the screen turned off and determines which component the app wishes to display when AOD is activated.
- To prevent burn-in, the system shifts every pixel by one position every 60 seconds.
In essence, Min Mode appears to be a structured mechanism for enabling persistent live activities on Android, allowing apps to deliver glanceable, battery-efficient experiences while the device is idle.
Why this matters: richer AOD without wrecking your battery
Applications that provide persistent navigation, workouts, timers, or delivery tracking often drain battery life since they keep the display, radios, and location services active. Min Mode offers AOD-compliant surfaces that are simplified, monochrome-friendly, and optimized for low refresh rates and brightness—conditions that extend battery runtime rather than diminish it.
Google Maps may be first in line
Early indications suggest that Google Maps is preparing to implement a minimalist power-saving mode compatible with Min Mode:
- An activity named
com.google.android.apps.gmm.features.minmode.MinModeActivityhas been identified in the Maps code. - Maps checks for the system-level activation of AOD Min Mode.
- A user-facing string indicates that the feature cannot operate in landscape mode, aligning with AOD’s portrait orientation limitation.
- An onboarding illustration hints at activation via the power button, consistent with how AOD is typically invoked.
While there is no official documentation linking Maps’ new mode to Min Mode, the naming conventions, checks, and constraints strongly suggest a connection.
Timing: likely Android 17, not 16 QPR3
Min Mode appears to be a platform-level feature that other developers could adopt, indicating that Google will likely provide new APIs for its implementation. Given that Android 16 QPR3 is not expected to introduce developer APIs, Android 17 seems to be the most likely timeframe for its release. Android Authority notes that the feature is currently disabled at the system level, reinforcing the expectation that it will not be ready until next year.
The bigger picture
If Min Mode is launched as anticipated, the AOD on Android could transform from a passive glance screen into an interactive, app-driven canvas—while still maintaining the low-power principles that make AOD a valuable feature. Initial implementations are expected from Google’s own applications, such as Maps, Clock, Fitness, or Now Playing, with third-party developers likely to follow suit once the APIs become available.
