title: Detect 3G or Wifi Network restoration
body: <p>Is it possible to implement a PhoneStateListener(or any other mechanism) to detect when either the 3G or Wifi network connection is restored ?</p>
  
  <p>I see both LISTEN_DATA_CONNECTION_STATE and LISTEN_DATA_ACTIVITY say (cellular) in the API's summary. Does it mean 3G only ?</p>
  
  <p>Thanks</p>