TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
        ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    // TODO: Consider calling
    //    ActivityCompat#requestPermissions
    // here to request the missing permissions, and then overriding
    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
    //                                          int[] grantResults)
    // to handle the case where the user grants the permission. See the documentation
    // for ActivityCompat#requestPermissions for more details.

}

GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();
String networkOperator = telephonyManager.getNetworkOperator();
String networOperatorName = telephonyManager.getNetworkOperatorName();
String networkTyInfo = String.valueOf(telephonyManager.getNetworkType());


int mnc = 0, mcc = 0;
if (!TextUtils.isEmpty(networkOperator)) {
    mcc = Integer.parseInt(networkOperator.substring(0, 3));
    mnc = Integer.parseInt(networkOperator.substring(3));
}
int cid =0;
int lac = 0;
if (cellLocation != null) {
     cid = cellLocation.getCid();
     lac = cellLocation.getLac();
}

GSMValues gsmValues =
    new GSMValues(
        String.valueOf(lac),
        String.valueOf(mcc),
        String.valueOf(mnc),
        String.valueOf(cid),
        String.valueOf(0),
        networkTyInfo,
        signalStrength,
        networOperatorName
);
// db = new DatabaseHelper(getApplicationContext());

// db.StoreLocations(gsmValues);

TelephonyManager TM = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
List<NeighboringCellInfo> neighboringCellInfoList = TM.getNeighboringCellInfo();

if(neighboringCellInfoList != null){
  //  iterate the list
}