Android Menu and Home buttons are not working

void Update() {

     if (Application.platform == RuntimePlatform.Android)
     {
         if (Input.GetKey(KeyCode.Home) || Input.GetKey(KeyCode.Escape) || Input.GetKey(KeyCode.Menu))
         {
             Application.Quit();
             return;
         }
     }
 }

Only Escape Button works the other ones tab me out of the game and when i return the game didnt reset