@Override
 public void onCellInfoChanged(List<CellInfo> cellInfo) {
   // super.onCellInfoChanged(cellInfo);
   CellTowersDataCollector.sOnCellInfoChanged(cellInfo);
 }
    @Override
    public void onSignalStrengthsChanged(SignalStrength signalStrength) {
      super.onSignalStrengthsChanged(signalStrength);

      CellTowersDataCollector.sOnSignalStrengthsChanged(signalStrength);
    }
 @Override
 public void onCellLocationChanged(CellLocation location) {
   super.onCellLocationChanged(location);
   CellTowersDataCollector.sOnCellLocationChanged(location);
 }