I would like to connect my Android device with my Windows device via Bluetooth with a RFCOMM serial port.

To figure out, if my App on Windows is started, I try to fetch the UUIDs of it with this code under Android:

var filter = new IntentFilter();
filter.AddAction(BluetoothDevice.ActionUuid);
RegisterFilter(filter);

_bluetoothManager = GetSystemService(Context.BluetoothService) as BluetoothManager;

… and inside the OnReceive method, I expect the result:

public override void OnReceive(Context context, Intent intent)
{
    if (intent.Action == BluetoothDevice.ActionUuid)
    {
        var bluetoothDevice = (BluetoothDevice)intent.GetParcelableExtra(BluetoothDevice.ExtraDevice, Class.FromType(typeof(BluetoothDevice)));
        var items = intent.GetParcelableArrayExtra(BluetoothDevice.ExtraUuid, Class.FromType(typeof(ParcelUuid)));

        ...        
    }
}

I expect to get the UUID, I advise with my Windows APP:

var streamSocketListener = new StreamSocketListener();
streamSocketListener.ConnectionReceived += StreamSocketListener_ConnectionReceived;
var guid = Guid.Parse("12020AC9-7BDB-41CB-9B26-93A285E006AA");
var serviceId = RfcommServiceId.FromUuid(guid);
var rfcommServiceProvider = RfcommServiceProvider.CreateAsync(serviceId).AsTask().Result;
streamSocketListener.BindServiceNameAsync(rfcommServiceProvider.ServiceId.AsString()).AsTask().Wait();
rfcommServiceProvider.StartAdvertising(streamSocketListener);

Sometime, my Android App receives the UUID, but often not. Until now, I didn’t find out, when and when not.

Any idea, how I can get it stable?