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by my123 2333 days ago
On the iPhone, the modem has always been on a separate chip.
1 comments

separate chip doesn't tell you anything about the security model.
It was USB/HSIC and then switched over to PCIe with IOMMU.
Right, regardless of chip configuration, modern phones use IOMMU for isolation. Arguably the main advantage of the PinePhone and Librem 5 is the kill switches.