Android (operating system)

Android (operating system)
Name	Android
Developer	Google
Family	Linux
Source model	Open source and proprietary
Released	September 23, 2008
Latest release	(varies by vendor)
Kernel type	Monolithic (modified Linux)
Ui	Graphical user interface (modified)
License	Apache License 2.0, GPLv2 (kernel), proprietary components

Android (operating system) Android is a mobile operating system originally developed by a startup acquired by Google and later stewarded by a consortium of companies. It is used across smartphones, tablets, wearables, televisions, and automotive systems and integrates contributions from organizations including Open Handset Alliance, Linux Kernel Organization, and numerous original equipment manufacturers such as Samsung Electronics, Huawei, Xiaomi, and OnePlus.

History

Android traces roots to a company co-founded by Andy Rubin, Rich Miner, Nick Sears, and Chris White before acquisition by Google in 2005. Early development involved partnerships with the Open Handset Alliance and handset makers including HTC Corporation and LG Electronics, leading to the commercial launch on the T-Mobile G1 (also known as HTC Dream) in 2008. Subsequent milestones include rapid platform evolution influenced by competitors such as Apple Inc. and regulatory environments shaped by cases involving European Commission and United States Department of Justice. Strategic acquisitions by Google—notably of companies like Motorola Mobility and various startup teams—affected roadmap decisions alongside standards work with bodies including the Bluetooth Special Interest Group, Wi-Fi Alliance, and Khronos Group.

Architecture

Android’s architecture builds on a modified Linux kernel for hardware abstraction, device drivers, and power management, with middleware and runtime layers provided by the Android Runtime and libraries. The stack incorporates components from organizations such as OpenSSL, WebKit (historically), and the Linux Foundation projects; application frameworks expose APIs used by apps from developers like Facebook, Inc., Microsoft Corporation, and Spotify Technology S.A.. Hardware abstraction layers interact with chipset vendors such as Qualcomm, MediaTek, and Samsung Electronics Semiconductor, while vendor-specific binaries and firmware are produced by manufacturers including Sony Corporation and Nokia (in its later era through brand licensing).

Features and User Interface

Android’s user interface supports touch gestures popularized by devices from HTC Corporation and Samsung Electronics and integrates design guidelines from Google’s Material Design language. The platform supports multitasking and notifications implemented in ways influenced by earlier work at companies like Palm, Inc. and BlackBerry Limited. Media playback leverages codecs and standards adopted by bodies such as MPEG, and display technologies from suppliers including Samsung Display and LG Display. Input methods include on-screen keyboards by third-party developers like SwiftKey and system-level accessibility services promoted by World Health Organization advocacy for assistive technologies.

Development and Ecosystem

Application development uses tools produced by Google such as Android Studio and the Gradle build system, plus alternative toolchains from organizations like Apache Software Foundation projects and independent vendors including JetBrains. The ecosystem includes app distribution via Google Play and alternative markets run by companies such as Amazon (company), regional platforms in China by firms like Tencent Holdings and Baidu, Inc., and specialized stores from carriers including Verizon Communications and China Mobile. Developer communities engage through conferences hosted by Google I/O, regional events by Mobile World Congress, and forums including Stack Overflow where companies like Microsoft Corporation and Facebook, Inc. participate.

Security and Privacy

Android’s security model relies on Linux permissions, sandboxing, and a permission system evolved through interactions with regulators including the Federal Trade Commission and privacy frameworks influenced by European Data Protection Board guidance. Security updates are delivered through a combination of monthly patches from Google and vendor updates from manufacturers such as Samsung Electronics and carriers like AT&T Inc.; the update ecosystem has been criticized in legal and academic venues including researchers at University of Cambridge and Carnegie Mellon University. Google Play Protect and services from security vendors such as McAfee and Kaspersky Lab provide malware scanning and threat intelligence, while initiatives like the Android Enterprise Recommended program aim to improve update lifecycles across brands like Lenovo and Asus.

Version History and Releases

Android’s major releases have included code names and version numbers that corresponded to internal milestones and marketing from Google. Milestones in the release cadence were announced at developer events such as Google I/O and coordinated with partners including Qualcomm and MediaTek. Major platform shifts—such as the introduction of the Android Runtime (ART), changes to application permissions, and Project Treble modularization—reflect engineering work similar in scale to efforts at Intel Corporation and ARM Holdings in processor ecosystems. Vendors including Motorola (during its ownership by Lenovo) and device lines from Samsung and Google Nexus / Pixel (device line) have been reference implementations for new versions.

Market Share and Device Adoption

Android’s global device adoption is driven by a wide array of manufacturers including Samsung Electronics, Xiaomi, Oppo, Vivo, and regional brands such as Tecno Mobile. Market analyses from firms like Gartner, IDC, and StatCounter show Android commanding a majority share of worldwide smartphone shipments and active devices, particularly in markets served by carriers including Vodafone Group and China Telecom. The platform’s flexibility has enabled deployments beyond phones in products by Sony Corporation (televisions), HTC Corporation (virtual reality), automotive platforms from Volkswagen Group partners, and wearable devices from Fossil Group and Fitbit.

Category:Mobile operating systems