Currently, Apple uses hard-coding techniques to restrict iOS features in specific locations. This means that most restrictions are simply tied to the region of a device, either by software settings or where that hardware comes from. But the company has been working on a new, smarter way to precisely determine the user’s location.
Based on our findings, the new system internally called “countryd” was silently added with iOS 16.2, but is not being actively used for anything so far. It combines multiple data such as current GPS location, country code from the Wi-Fi router, and information obtained from the SIM card to determine the country the user is in… Code seen by 9to5Mac makes it clear that this system is designed to set restrictions determined by government regulators.