Export to excel not working when open in mobile. Asp.net MVC4

           Here is my code
             ExportedTable = "<table><th></th>Name<th></th><th>Mobile</th><th>Adress</th> <tr><td>XYZ</td><td>123456789</td><td>XYZ</td></tr>  </table>";
            Response.Clear();
            Response.Buffer = true;
            Response.AddHeader("content-disposition", "attachment;filename=Overview.xls");
            Response.Charset = "";
            Response.ContentType = "application/vnd.ms-excel";
            string style = @"<style> TABLE { border: thin solid black; } TD { border: thin solid black; } </style> ";
            Response.Write(style);
            Response.Output.Write(ExportedTable.ToString());
            Response.Flush();
            Response.End();

Now its work fine in windows browsers when i export data in mobile its give HTLM in excel file.
I am stuck in this problem how to resolve this?