Security hardening is the big one. Android actually runs on the Linux kernel, but it adds a lot of additional security layers on top of it—sandboxing, SELinux enforcement, and the app permission model developers have to work within. Mobile Linux systems are much more open by design, which is great for user control, but the security model is still catching up compared to hardened Android builds like GrapheneOS. Personally, I’d love to see something like QubesOS on mobile—strong compartmentalization built directly into the system. And that’s the beauty of Linux—there are multiple distros to choose from. Some will focus more on privacy, some on security hardening, and others on mainstream adoption. Some Linux phones also include hardware kill switches that physically cut power to radios like cellular, Wi-Fi, Bluetooth, or even the camera and microphone. So today: GrapheneOS = strongest mobile security model. Linux phones = strongest model for long-term user ownership and hardware control.