private void onServiceAdded() {
    final BluetoothLeAdvertiser bluetoothLeAdvertiser =
        mBluetoothManager.getAdapter().getBluetoothLeAdvertiser();
    AdvertiseData.Builder dataBuilder = new AdvertiseData.Builder();
    dataBuilder.setIncludeTxPowerLevel(false); // necessity to fit in 31 byte advertisement
    // dataBuilder.setManufacturerData(0, advertisingBytes);
    dataBuilder.addServiceUuid(new ParcelUuid(UUID.fromString(Constants.CHAT_SERVICE_UUID)));
    // dataBuilder.setServiceData(pUUID, new byte[]{});

    AdvertiseSettings.Builder settingsBuilder = new AdvertiseSettings.Builder();
    settingsBuilder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED);
    settingsBuilder.setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_HIGH);
    settingsBuilder.setConnectable(true);

    bluetoothLeAdvertiser.startAdvertising(
        settingsBuilder.build(), dataBuilder.build(), mAdvertiseCallback);
    final Handler handler = new Handler(Looper.getMainLooper());
    handler.postDelayed(
        new Runnable() {
          @Override
          public void run() {
            bluetoothLeAdvertiser.stopAdvertising(mAdvertiseCallback);
          }
        },
        ADVERTISE_TIMEOUT);
  }