Qubes OS is a security-focused open-source operating system designed to provide strong isolation between different components of a system. It uses virtualization technology to create multiple isolated virtual machines (called qubes) that can run different operating systems and applications. Qubes OS is designed to be secure by default, with the ability to sandbox applications, isolate networking, and use secure storage. It also has a range of other security features such as mandatory access control, a built-in firewall, and a secure boot process. Qubes OS also provides a range of tools to help users manage their security and privacy, such as a secure password manager and a Tor-based anonymizing network.
Arch is my best choice for Android, as I have a Samsung Galaxy S3 emerge.