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GrapheneOS is only 100% open source if you do not count a giant pile of proprietary and privileged binary blobs required for it to function on any supported hardware.

This is not the fault of the Graphene team so much as a fundamental problem in the mobile chipset market.

Desktop/Laptop CPUs give you dramatically more control, especially with OpenSIL etc.

There are simply are no sovereign software solutions for modern mobile hardware.

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The need for proprietary code for firmware and hardware is the same on desktop. Mobile is not unique in this regard. GrapheneOS is 100% open source.

> The need for proprietary code for firmware and hardware is the same on desktop.

The Linux distro I founded has zero blobs. Built completely from source and boots and runs on real laptops and desktops. That is what 100% open source looks like. Meanwhile every Android distro requires a vendor partition with dozens of black box blobs.

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