Lots of you have probably heard of iPhone NCK unlock. NCK means Network Control Key, that’s an ancient dream of all the hackers to unlock an iPhone using NCK code. This way will open the possibility to permanent unlock all the released units despite of iOS version and baseband version. That method worked for iPhone 2G but since that time lots of things changed in iPhone’s baseband structure and right now this method is very difficult to be implemented to unlock such devices as iPhone 3G/3GS/4/4S as there is activation process based on Apple Server side. So let’s try to figure out what is NCK code and how can it help by unlocking Apple’s devices.