Edit: to clarify India banned satcom devices
...this was also part of the plot of Independence Day.
I don't think they can tractably do that. If India started shooting down US satellites they'd be in for a whole world of problems.
At a minimum, it is effective enough that it is a response that would be expected to be elicited if a government found a device undesirable.
You can just about jam GPS signals locally (within a few km if you pour the resources into it.) Nations are not able in practice to generally jam satellite signals.
We know that nations are not able to do this in practice... because it's how people from those locations are calling out to us.
You don’t. You prevent people from getting access to the device in the first place. There are no countries where people already have iPhone 13s. A country that doesn’t want them, could certainly ban their import.
There ain’t too many people watching HBO on their satellite TVs in North Korea.
Exactly.
> There are no countries where people already have iPhone 13s.
They have Iridium, Garmin, etc. Any number of satellite devices.
> A country that doesn’t want them, could certainly ban their import.
I think you're super-naive if you think import bans on these devices work in practice, sorry. They're easily concealable.
But if these countries do nothing and change nothing, this feature means that it would be prohibited to bring iPhone 13s in the country without special permits.
As to why: Indian customs officers confiscating all iPhones is probably bad for business (in the long term).