IPhone Connectivity Testing: How do I force it to lose connection?

Question

Apple wants me to give the user a friendly apology if I can\'t find an internet connection. Using the Reachability Demo, this was easy enough. I want to take it a step further a

Answer 1

You can use the SpeedLimit preference pane to simulate network latency under the simulator. And here's a command line version built on top of the ipfw command.

The advantage over just yanking the cord or killing WiFi is that you can specify the speed when hitting specific hosts so it can be used for testing without killing your regular network services.