Android 8.1 〈100% FREE〉

As of early 2026, approximately still run version 8.1. While it remains functional for legacy hardware, users are encouraged to update to newer versions like Android 9.0 Pie or higher to protect against modern vulnerabilities. Summary Table: Key Features of Android 8.1 Neural Networks API Enables on-device machine learning and AI features. Android Go Edition Optimized performance for low-end hardware. Bluetooth Battery Levels Easy monitoring of wireless accessories. Wi-Fi Speed Labels

: The introduction of the AAudio API significantly reduced audio latency, a massive win for music production apps and mobile gaming. 2. Visual and Interface Refinements android 8.1

Android 8.1 introduced several "quality of life" changes that changed how users interacted with their phones daily: As of early 2026, approximately still run version 8

: For the first time, users could see the battery levels of connected Bluetooth devices directly in the Quick Settings toggles. As of early 2026

Released in December 2017, arrived as a strategic maintenance update that did far more than fix bugs. It served as the bridge between the massive architecture overhaul of Android 8.0 and the future of AI-driven mobile operating systems. While it may seem like a legacy version today, many of its core introductions—from the Neural Networks API to advanced battery management—remain the bedrock of the modern Android experience. The Evolution of Oreo

Android 8.1 Oreo remains a testament to Google's ability to polish a complex operating system into a seamless, intelligent tool that works across the entire spectrum of mobile hardware.