This doesn’t make sense to me.
Why do they even need it to be that way?
Compartmentalisations was one of the basic points in system design methodology that I thought (because I read it somewhere) smartphones would also be built upon. So why compromise the whole thing to a supply chain attack?
If you think every phone has some sort of IME, installing a custom ROM means nothing.
A phone’s baseband (modem) runs its own proprietary firmware with full RAM access.
This doesn’t make sense to me.
Why do they even need it to be that way?
Compartmentalisations was one of the basic points in system design methodology that I thought (because I read it somewhere) smartphones would also be built upon. So why compromise the whole thing to a supply chain attack?
so that they can surveil you
That part, I already understand.
But you needed to have some sort of excuse for such things back when smartphones were new.
I think the compartmentalisation concepts were there from the feature-phone era.
It’s by design.