This is a function that, in principle, was going to be aimed at iOS 12, but it seems that Apple thought better and also included in iOS 11.4.1. Restricted Mode USB is now available for the current version of the system, so it can be very interesting to enable it for users concerned about the security of their data.

As Apple explained with the presentation of iOS 12, the restricted mode of USB slows down attempts to access the iPhone by brute force as use some forensic data societies and the bodies and state security, although some of the first have already warned that they were able to ignore this system a week after the release of the beta iOS 12.

Now if you have iOS 11.4.1 and you are headed to Configuration and Access Code you will see that There is a new option that allows you to activate USB Accessories . By default Apple has disabled this function in the system so if you want to activate it just press the button for this purpose.

Once activated, when the iPhone or iPad is stuck for more than an hour away, iOS no longer allows USB accessories to connect to the device, this which eliminates access to cracking systems such as GrayKey.

With restricted USB mode, iOS 11.4.1 includes enhancements for Find My AirPods and synchronization with Exchange accounts.