[Skip to main content](#main-content)
[](/)
/
* [English](https://source.android.com/)
* [Deutsch](https://source.android.com/?hl=de)
* [Español](https://source.android.com/?hl=es)
* [Español – América Latina](https://source.android.com/?hl=es-419)
* [Français](https://source.android.com/?hl=fr)
* [Indonesia](https://source.android.com/?hl=id)
* [Italiano](https://source.android.com/?hl=it)
* [Polski](https://source.android.com/?hl=pl)
* [Português](https://source.android.com/?hl=pt)
* [Português – Brasil](https://source.android.com/?hl=pt-br)
* [Tiếng Việt](https://source.android.com/?hl=vi)
* [Türkçe](https://source.android.com/?hl=tr)
* [Русский](https://source.android.com/?hl=ru)
* [עברית](https://source.android.com/?hl=he)
* [العربيّة](https://source.android.com/?hl=ar)
* [فارسی](https://source.android.com/?hl=fa)
* [हिंदी](https://source.android.com/?hl=hi)
* [বাংলা](https://source.android.com/?hl=bn)
* [ภาษาไทย](https://source.android.com/?hl=th)
* [中文 – 简体](https://source.android.com/?hl=zh-cn)
* [中文 – 繁體](https://source.android.com/?hl=zh-tw)
* [日本語](https://source.android.com/?hl=ja)
* [한국어](https://source.android.com/?hl=ko)
[Sign in](https://source.android.com/_d/signin?continue=https%3A%2F%2Fsource.android.com%2F&prompt=select_account)
Android
Open Source Project
=============================
Use the Android operating system to power your device.
/
* [AOSP](https://source.android.com/)
[](https://source.android.com/docs/setup/build/feature-flagging)
Featured
### [Feature launch flags](https://source.android.com/docs/setup/build/feature-flagging)
Android feature launch flags ensure that the AOSP development branch is stable for everyone. Contributors to AOSP can use feature launch flags to make sure only tested code is executed.
[Read more](https://source.android.com/docs/setup/build/feature-flagging)
[](https://source.android.com/docs/whatsnew/android-15-release)
Featured
### [What's in Android 15](https://source.android.com/docs/whatsnew/android-15-release)
Android 15 is available! Learn about the features added in Android 15 and how to implement them on your devices.
[Read more](https://source.android.com/docs/whatsnew/android-15-release)
Getting started
### [Setup](https://source.android.com/docs/setup)
Learn how to set up your environment, download the AOSP source, build Android, and make contributions.
Security
### [Security](https://source.android.com/docs/security)
Find out how Android incorporates industry-leading security features to keep the Android platform and ecosystem safe.
Core topics
### [Android fundamentals](https://source.android.com/docs/core)
From the basic building blocks of an Android device to the more intricate advanced features, learn about all the ways you can customize the Android OS.
Compatibility
### [Compatibility](https://source.android.com/docs/compatibility)
Ensure your users have a coherent experience as they use your device alongside other Android devices in the ecosystem.
Automotive
### [Automotive](https://source.android.com/docs/automotive)
Learn how to develop and customize the Android Automotive platform, which runs directly on in-vehicle hardware.
Devices
### [Android devices](https://source.android.com/docs/devices)
Read about creating configurable virtual Android devices, managing devices on a corporate network, and delivering live content to devices through Android TV.
[
](https://source.android.com/docs/security/bulletin)
### [Security bulletins](https://source.android.com/docs/security/bulletin)
Help protect your device by checking the latest Android Security Bulletins. Also see the Android Automotive, Chromecast, Wear OS, Pixel, and Pixel Watch bulletins.
[
](https://source.android.com/docs/setup/start)
### [Android development](https://source.android.com/docs/setup/start)
Learn how to set up your environment, download the source, and start contributing to AOSP through this tutorial.
[
](https://source.android.com/docs/core/architecture)
### [Architecture](https://source.android.com/docs/core/architecture)
Learn how the pieces fit together, from the kernel to the HALs to updatable system components.
[
](https://source.android.com/docs/core/connect)
### [Connectivity](https://source.android.com/docs/core/connect)
Make sure your devices work together and are connected through Bluetooth, NFC, Wi-Fi, and telephony.