Few days back, we are trying to emulate the slow speed network connection to test our iPhone Application behavior. Unlike Android Emulator, the iPhone Simulator does not have an in-build option to enforce the network speed. Many suggest to go for iPhone device. But I felt, this is not something that, I am alone facing and someone might be having some solution for it.
After few search, I found SpeedLimit, the Leopard preference panel to regulate the network speed. It is very useful for iPhone testing and has few default connection profiles like Dial-Up, Edge, ..