iOS 11 brings a new function for terminals iPhone which additionally protects our devices in case they are lost, or even stolen. We are talking about a new function that iOS 11 has for making phone calls, this allows blocking the call if the terminal is blocked with an access code, something impossible to do until now because the function does not exist.
iOS 11 has this function available in the menu Settings > Touch ID & Passcode, Configurations > Touch ID and passcode, it being listed in the section with functions that can be blocked in LockScreen, the Lock Screen. Among them is the one for Return missed calls, and after activation iOS 11 will no longer allow you to return calls without entering the iPhone's passcode.
iOS 11 has this change implemented to ensure that no one will be able to return calls from a stolen or lost iPhone. This means that anyone who calls the terminal will be left without an answer to the call, but unfortunately those who lose their device will have problems recovering it, because the person who finds it will not know the access code and will not be able to call the number phone from iOS 11.
iOS 11 also brings many other changes, and I have about all of them talked here.
