The just-released beta of iOS 12 can be set to partially deactivate the Lightning port after an iPhone hasn’t been used for an hour. This is a clear attempt to make useless the unlocking tools employed by law enforcement.
Police across the country are purchasing a tool called GrayKey. When hooked to an iPhone’s Lightning port, this swiftly enters thousands of passcodes until the correct one is reached. Deactivating the Lightning port would block its use.