// create ios channel
        NotificationChannel iosChannel = new NotificationChannel(IOS_CHANNEL_ID,
                IOS_CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH);
        iosChannel.enableLights(true);
        iosChannel.enableVibration(true);
        iosChannel.setLightColor(Color.GRAY);
        iosChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
        getManager().createNotificationChannel(iosChannel);