In order to deal with these cracked artifacts, Apple's approach in iOS 12 is to add a new USB connection limit to the system. In the event that the iPhone has not been unlocked within an hour, it must enter a password to connect to the computer.
While Apple can relax, Grayshift has exhausted its efforts to research new technologies, and they have cracked Apple's latest USB-restricted model in this new test version. GrayKey also integrates more new features, These functions will be used one after another.
The USB-restricted model is not intended to limit the work of law enforcement agencies, but because many criminals also use private crackers like GrayKey to access private data. But for now, they have to continue to upgrade, but simply, this feature is still System test version.