protected TnLocation getLocationByCellTowerInfo() {
   TnCellInfo cellInfo = TnRadioManager.getInstance().getCellInfo();
   return getLocationByCellTowerInfo(cellInfo);
 }
 public void initRadio() {
   if (TnRadioManager.getInstance() == null) {
     TnRadioManager.init(
         new AndroidRadioManager(AndroidPersistentContext.getInstance().getContext()));
   }
 }