Sprite not changing on android.

Ok, so I have a script that changes the sprite of the player when the user clicks a button. On PC, if the user clicks the button, the sprite changes In-Game, but on Android the sprite remains the default one.

Here is the script I use:

 using UnityEngine;
 using System.Collections;
 
 public class Shop : MonoBehaviour {
 
     int catPrice = 10;
     public Sprite defaultSprite;
     public Sprite catSprite;
     public GameObject Player;
     int moneyz;
     public bool hasBeenPressed;
     public SpriteRenderer spriteRenderer; 
     
     void Start () 
     {
         moneyz = PlayerPrefs.GetInt("Score");
         spriteRenderer = Player.GetComponent<SpriteRenderer>();
 
         int state = PlayerPrefs.GetInt("hasBeenPressed", 0);
         
         if (state == 1)
             hasBeenPressed = true;
         else
             hasBeenPressed = false;
     }
 
     public bool IsCatBought()
     {
         return hasBeenPressed;
     }
 
 
     void OnGUI()
     {
 
         if(!hasBeenPressed)
         {
             if(GUI.Button (new Rect(Screen.width / 2 - 30, 50, 90, 30), "Buy Cat Player."))
             {
                 if(PlayerPrefs.GetInt("Score", moneyz) < 10)
                 {
                     GUI.Label (new Rect(Screen.width / 2 - 40, 250, 100, 30), "Not enought moneyz");
                 }
                 else
                 {
                     PlayerPrefs.SetInt("Score", moneyz - catPrice);
                     Player.GetComponent<SpriteRenderer>().sprite = catSprite;
                     hasBeenPressed = true;
                     PlayerPrefs.SetInt("hasBeenPressed", 1);
                 }
             }
         }
 
         if(PlayerPrefs.GetInt("hasBeenPressed") == 1)
         {
             if(GUI.Button (new Rect(Screen.width / 2 - 30, 250, 90, 30), "Cat Player."))
             {
                 Player.GetComponent<SpriteRenderer>().sprite = catSprite;
             }
         }
 
         if(GUI.Button (new Rect(Screen.width / 2 - 40, 100, 100, 30), "Game"))
         {
             Application.LoadLevel(1);
         }
 
         if(GUI.Button (new Rect(Screen.width / 2 - 40, 150, 100, 30), "Back to Menu"))
         {
             Application.LoadLevel(0);
         }
 
         if(GUI.Button (new Rect(Screen.width / 2 - 40, 200, 100, 30), "Default Player."))
         {
             Player.GetComponent<SpriteRenderer>().sprite = defaultSprite;
         }
     }
 }