how reload scene when rotate screen android

Hello ppl.

I want reload my current scene when I rotate my android device (portrait to landscape and vice versa)

I triying with this script:

using UnityEngine.SceneManagement;
using System.Collections;
using UnityEngine;

public class RELOADSCENE : MonoBehaviour
{
    void Update()
    {
        if (Screen.orientation == detect orientation) //I dont know how complete this
        {
            Scene scene = SceneManager.GetActiveScene(); SceneManager.LoadScene(scene.name);
        }
        else
        {

        }
    }
}

but I dont know how call the API in charge of orientation/rotation device.

I want to do this because I need update the fov orientation of my secondary camera when I change to portrait or landscape. (Maybe there is an easier way)
the main camera change the orientation automatically.

Just store the orientation on awake, and compare it every frame to the previous one.

if (Screen.orientation != lastOrientation) 
{
    lastOrientation = Screen.orientation
    //...
}