> What about being required to carry a your-own-government-controlled tracking device?
What part of the cellphone manufacturer being based overseas makes you think the government can't track you via it?
Even leaving asides 5-eyes style data-sharing agreements, your US/Chinese smartphone still connects through a domestic cellphone carrier, using a domestic number. That's enough to have at a minimum fine-grained location tracking, call logs, and data usage.
In fact 5g and all previous standards have a provision for lawful intercept. So your domestic intelligence service and police can always turn it into a listening device.
What part of the cellphone manufacturer being based overseas makes you think the government can't track you via it?
Even leaving asides 5-eyes style data-sharing agreements, your US/Chinese smartphone still connects through a domestic cellphone carrier, using a domestic number. That's enough to have at a minimum fine-grained location tracking, call logs, and data usage.