private void InstanceOnFindMyGearStopped(object sender, EventArgs e)
 {
     ScannerBtn.Stop();
     Dispatcher.Invoke(() =>
     {
         LeftMuteBtn.Visibility  = Visibility.Hidden;
         RightMuteBtn.Visibility = Visibility.Hidden;
         LeftMuteBtn.SetMuted(false);
         RightMuteBtn.SetMuted(false);
     });
 }
 public override void OnPageHidden()
 {
     BluetoothService.Instance.SendAsync(SPPMessageBuilder.FindMyGear.Stop());
     ScannerBtn.Stop();
 }