Android Oreo

Android Oreo (codenamedAndroid O during development) is the eighth major release and the 15th version of Android, a mobile operating system.

It was initially unveiled as an alpha quality developer preview in March 2017 and later made available to the public on August 21, 2017.

It contains several major features, including notification channels, picture-in-picture support for video, performance improvements, and battery usage optimization, and support for autofillers, Bluetooth 5, system-level integration with VoIP apps, wide color gamuts, and Wi-Fi Aware. Android Oreo also introduces two major platform features: Android Go – a software distribution of the operating system for low-end devices – and support for implementing a hardware abstraction layer.

As of June 2026, 2.03% of Android devices run Android Oreo, making it the 9th most widely used version of Android.