Well, no one has any idea of how ad hoc requests are made to turn on your phone when it's off. Logically, if someone's intentionally turned off their phone they desire it to be off.
It's really surprising how people end up making absolutist claims about privacy while demonstrating very little understanding of the threat model posed by modern smartphones.
> It's really surprising how people end up making absolutist claims about privacy while demonstrating very little understanding of the threat model posed by modern smartphones.
Consider it this way: your smartphone is an advanced collection of multiple, highly sensitive microphones, cameras, location sensors, accelerometers, etc.
The fact that you have a phone in and of itself is traceable, as cell phone towers maintain records of who, when, and where. At this point, usage of such records is so commonplace by LEO that not having your phone with you when you do something is considered suspicious in and of itself.
Applies to all phones, dumb or not: law enforcement sends you a SMS that must never be shown to the user. It answers with data that leads to your precise location. Has been there since forever.
Advocating against Apple force-updating a phone that you haven't bought seems... silly in comparison? Especially as only with an up to date OS, you can be sort of safe against attackers, be it state level sponsored or regular ones.
If it's actually SMS it wouldn't work in the USA on a phone that doesn't support SMS over LTE (3G shutdown). Such a phone is quite usable with data only.