iOS 16 introduces location-based feature restrictions.
Apple has been testing a new system called "countryd" in iOS 16 to restrict features based on the user's location. The system combines multiple data such as GPS location, country code from the Wi-Fi router, and information obtained from the SIM card to determine the country the user is in. This system is designed to set restrictions determined by government regulators and may be used to allow sideloading in Europe with iOS 17. Additionally, iOS 16.2 also revealed that Apple has been working on a new "Custom Accessibility Mode" for iPhone that may be officially announced with iOS 17.