Google appears to be experimenting with new power-saving tools for Android that could make running full-screen apps far more efficient. Two separate discoveries suggest the company is developing features tailored for low-power scenarios — specifically for navigation and always-on displays.
Stephen Schenck from Android Authority uncovered code in a beta version of Google Maps that enables a stripped-down, black-and-white interface. This minimalist design removes distractions and UI clutter, focusing entirely on navigation. In a separate Android Authority analysis, Mishaal Rahman found evidence of a system-level feature dubbed “Min Mode,” which could allow select apps to operate on the lock screen for devices with Always-On Display (AOD) support.
Together, these discoveries hint at a compelling combination: a grayscale, power-efficient version of Google Maps running directly from the lock screen — an ideal setup for walking navigation.
A Smarter Way to Navigate
Google Maps has long been more than just a driving companion. It helps travelers explore cities on foot or by public transport, offering real-time directions and contextual updates. But using Maps while walking often means repeatedly unlocking your phone — an inconvenience that also drains the battery. Imagine instead simply pressing the power button to bring up navigation right on the lock screen.
Inside the Black-and-White Mode
Schenck’s findings, accompanied by screenshots, show how this mode simplifies Google Maps to its essential elements, reducing visual noise and saving power. The code suggests it supports walking, driving, and two-wheeler directions, with potential activation via the phone’s power button. While this could help in situations where you forget a charger before a drive, its real advantage may surface during long periods away from outlets — like walking or sightseeing.
Tying It All Together: Min Mode
Rahman’s discovery strengthens this theory. He found direct links between Google Maps’ grayscale mode and Android 17’s upcoming Min Mode, which integrates with the AOD system. This feature allows certain apps to display specialized, minimal interfaces while preserving ultra-low display settings — reduced brightness, refresh rate, and color depth.
Min Mode would intelligently detect when an app, like Google Maps, was recently active, and keep it accessible even with the screen locked. That means navigation could stay visible without significantly draining the battery, ideal for power-conscious users.
Power Saving Meets Practicality
For travelers, cyclists, or anyone navigating new areas, this approach could be a game changer. You could keep Maps running continuously without worrying about power loss — perfect for busy sightseeing days or long bike rides.
While these features remain in testing, Google’s ongoing work suggests a renewed focus on efficiency within Android. If realized, Android 17 might not only look different in grayscale but feel smarter about how it saves your battery when you need it most.
