An emulation model dependent on random occurrences of loss does not provide a realistic representation of cellular network conditions. Update : As of iOS 6, it is now possible to use Network Link Conditioner directly on the device. In addition to deleting the network profile, you can also try to remove the adapter settings via the registry. prefPane in either /Library/PreferencePanes/ or ~/Library/PreferencePanes/. But after digging around for years, I stumbled onto Network Link Conditioner, which was introduced with MacOS Lion, as part of the Xcode utilities. If you're on a Mac, you can use Network Link Conditioner. UP TO 55% OFF UNDER SINK SYSTEMS - LIMITED TIME! Instant access to clean, extraordinary water. 搜索Network Link Conditioner,选择合适的Hardware IO Tools for Xcode版本下载即可。 2. To remove the settings, open the registry editor (click on Start and type in regedit. If you have a previous Network Link Conditioner preference panel installed, remove it, clear the trash, and restart your machine.