Default Bluetooth Chat Example - Service Discovery failed


for my app, which needs to communicate with a HC-06 Bluetooth module, I modified the bluetooth chat example.
Then and now the process of creating sockets failes and I do not know why. I did not change anythin in that part, except for the UUID:
private static final UUID MY_UUID_SECURE =
    private static final UUID MY_UUID_INSECURE =
For the ones, who do not know, what the connectThread looks like:

private class ConnectThread extends Thread {
        private final BluetoothSocket mmSocket;
        private final BluetoothDevice mmDevice;
        private String mSocketType;

        public ConnectThread(BluetoothDevice device, boolean secure) {
            mmDevice = device;
            BluetoothSocket tmp = null;
            mSocketType = secure ? "Secure" : "Insecure";

            // Get a BluetoothSocket for a connection with the
            // given BluetoothDevice
            try {
            	secure = false;
            	/*Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
                tmp = (BluetoothSocket) m.invoke(device, 1);*/
            	//UUID uuid = mmDevice.getUuids()[0].getUuid();

                if (secure) {
                    tmp = device.createRfcommSocketToServiceRecord(
                         MY_UUID_SECURE  );
                } else {
                    tmp = device.createInsecureRfcommSocketToServiceRecord(
            } catch (Exception e) {
                Log.e(TAG, "Socket Type: " + mSocketType + "create() failed", e);
            mmSocket = tmp;
Does anyone know, what to do?

I already tried to change the UUID and to reflect the Method "createRFCommSocket".

Please help me!