问题描述: Could not locate device support files. This iPhone 7 (Model 1660, 1778, 1779, 1780) is running iOS 12.0 (16A366), which may not be supported by this version of Xcode. 解决方案: 将下载的配置包放到下面路径： /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport 让低版本(10.0以下)Xcode支持调试高版本iOS 12.0(16A366).