how do you get the phone's MCC and MNC in Android?

The only way I've found of retrieving MCC and MNC is by overriding an activity's onConfigurationChanged method, as such:

public void onConfigurationChanged(Configuration config)
{
    super.onConfigurationChanged(config);
    DeviceData.MCC = "" + config.mcc;
    DeviceData.MNC = ""  +config.mnc;
}

However, I need this data as soon as the app starts and can't wait for the user to switch the phone's orientation or equivalent to trigger this method. Is there a better way to access the current Configuration object?