Android :: Internet Connection Bug Or Error?

In my application I must use the internet connection ,so I check it first before I open an URL connection using this :-

public boolean IsConnectedToNetwork(ConnectivityManager conManager) { NetworkInfo allNetworkInfo = conManager.getActiveNetworkInfo(); NetworkInfo currNetworkInfo; boolean anythingConnected = false; for (int i = 0; i < allNetworkInfo.length; i++) { currNetworkInfo = allNetworkInfo[i];

if (currNetworkInfo.getState() == NetworkInfo.State.CONNECTED) { anythingConnected=true; }
}
return anythingConnected; }

However this code runs well when I connected to either the operator internet Or to a Wi-fi network. But when I'm connected to the operator but without credit and no internet the mobile also sees it as there's internet,or even connected to a Wi-fi network but without internet gateway it also sees as if it's connected to the internet.