I’m talking about the baseband, the device that talks to the cell network (among many other functions). It has its own closed-source firmware, no open-source substitute for that firmware exists, and it has full access to the entire system, bypassing the CPU and OS. Installing a different OS will not stop attackers from exploiting vulnerabilities in the baseband firmware and taking over the phone.
I’m talking about the baseband, the device that talks to the cell network (among many other functions). It has its own closed-source firmware, no open-source substitute for that firmware exists, and it has full access to the entire system, bypassing the CPU and OS. Installing a different OS will not stop attackers from exploiting vulnerabilities in the baseband firmware and taking over the phone.