请问极光的ios推送默认的是APNs 通知 还是 应用内消息 ？

服务端用的是官网的c# sdk, 代码如下：

JPushClient client = new JPushClient(app_key, master_secret);

            PushPayload pushPayload = new PushPayload();
            pushPayload.platform = Platform.android_ios();
            //pushPayload.audience = Audience.all();
            pushPayload.audience = Audience.s_registrationId(regid);
            var notification = new Notification().setAlert(content);
            notification.AndroidNotification = new AndroidNotification().setTitle(title);
            notification.AndroidNotification.AddExtra("alarmid", alarmid);
            notification.IosNotification = new IosNotification();
            notification.IosNotification.incrBadge(1);
            //notification.IosNotification.AddExtra("extra_key", "extra_value");
            notification.IosNotification.AddExtra("alarmid", alarmid);
            pushPayload.notification = notification.Check();

client.SendPush(payload);

出现的问题是：只能在app内收到消息，app未打开时或在后台时，无法收到消息通知！！请问大拿们，这是什么情况啊？？