IOS Networking

I'm making a game on IOS that involves networking and everything works on the computer but when i run it on the iphone it can start a server but wont connect to an existing server. Code:

 var IP : String = "127.0.0.1";
 var Port : int = 25001;

function StartServer () {

     Debug.Log("Starting Server...");
     Network.InitializeServer(MaxConnections,Port,false);

}

function ConnectToServer () {

 Debug.Log("Connecting To Server...");
 Network.Connect(IP,Port);
 }