GrapheneOS

GrapheneOS is a privacy- and security-focused mobile operating system built on the Android Open Source Project (AOSP). The project aims to strengthen protection against real-world threats while preserving usability and broad app compatibility. Rather than adding cosmetic features or bundling third-party apps, it focuses on carefully designed improvements to the operating system and its security foundations.

GrapheneOS offers measures to reduce attack surfaces, limit exploitation of vulnerabilities, strengthen sandboxing, and protect against persistent compromise. Privacy controls include network and sensor permissions, scoped access to storage and contacts, Wi-Fi privacy features, and safeguards against device identifier leaks. Users can also access options such as USB-C control, LTE-only mode, PIN scrambling, duress passwords, automatic reboot, and encrypted backups.

The system supports sandboxed Google Play for users who need Google services without integrating them invasively into the OS. Its accompanying tools include the Vanadium browser and WebView, Auditor app and attestation service, Camera, PDF Viewer, Setup Wizard, and app repository. GrapheneOS also provides installation guidance, source code, documentation, and project updates.