Android is an open-source mobile operating system and platform led by Google, unveiled on 5 November 2007 by the Open Handset Alliance, with the T-Mobile G1 as the first commercial device in 2008.
Built on the Android Open Source Project (AOSP), it is used by phone, tablet, TV, automotive, wearable and XR device makers and integrates Google services such as Gemini. Android 17 is the latest major version in 2026, and some devices offer five OS upgrades and six years of security updates.