Unable to retrieve column values from one of the tables joined in a stored procedure?

create procedure [dbo].[SP_MobileList]
As
Begin
select MobileId,MobileName from BasicMobileData
END

 public virtual ObjectResult<SP_MobileIdName_s_Result> SP_MobileIdName_s()
{
            return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<SP_MobileIdName_s_Result>("SP_MobileIdName_s");
}

public partial class SP_MobileIdName_s_Result
{
   public string MobileId { get; set; }
   public string MobileName { get; set; }
}

public class MobileController : Controller
    {
        MobileEntities objMobileContext = new MobileEntities();
        SP_MobileIdName_s_Result objMobile = new SP_MobileIdName_s_Result();

        #region "ActionMethods"
        public ActionResult MobileDetails()
        {
            foreach (SP_MobileIdName_s_Result objMobile in objMobileContext.SP_MobileIdName_s())
            {
                Response.Write(objMobile.MobileId);
                Response.Write(objMobile.MobileName);
            }
            return View();
        }
        #endregion

    }