Android : webcamTetxure angle rotation in unity3d

i am having a difficulty rotating the webcamtexture in my android device

here is my scene :

and here is the image in my phone :

you can see the difference in rotation and scaling between the phone and the editor .. how can i fix this problem so my phone display the correct rotation of the webcamtexture ?

using UnityEngine;

using UnityEngine.UI; using System.Collections;

public class Camera_pnl : MonoBehaviour {

//// Use this for initialization
 WebCamTexture webCameraTexture;
void Start() {
    GUITexture BackgroundTexture = gameObject.AddComponent<GUITexture>();
    BackgroundTexture.pixelInset = new Rect(0,0,Screen.width,Screen.height);

        WebCamDevice[] devices = WebCamTexture.devices;
        foreach(WebCamDevice cam in devices)
        {
            if(cam.isFrontFacing )
            {    
                webCameraTexture  =    new WebCamTexture(cam.name);
                webCameraTexture.deviceName  = cam.name;
                webCameraTexture.Play();
                BackgroundTexture.texture = webCameraTexture;
            }
        }
    }

   void Update () {
    if (Input.GetKey (KeyCode.Escape)) {
                Invoke("LoadGame",0.1f);
    }
}

void LoadGame()
{
    webCameraTexture.Stop ();
    webCameraTexture = null;
    Application.LoadLevelAsync("Game");
}

 }

here is the code of the Quad ... thank you in advance