GrapheneOS

GrapheneOS is a private and secure mobile operating system with a high level of usability comparable to mainstream Android devices. GrapheneOS focuses on the research and development of security, privacy and compatibility features, giving users the tools they need to protect their privacy even while using mainstream apps and services. GrapheneOS is compatible with nearly every Android app via its unique sandboxed Google Play compatibility layer. It provides substantial defenses, protecting devices against compromise by even sophisticated attackers. Their work benefits billions of users as a result of their contributions to the Android Open Source Project (AOSP) and the Linux kernel.

A list of features that GrapheneOS provides over AOSP can be found at: https://grapheneos.org/features

GrapheneOS supports devices meeting strict security requirements: https://grapheneos.org/faq#supported-devices

A non-exhaustive list of requirements devices need to meet in order to be supported by GrapheneOS can be found here: https://grapheneos.org/faq#future-devices

GrapheneOS can be installed on supported devices, including via a very easy to use web installer: https://grapheneos.org/install/