Report Image works in some devices, not others

Report Image works in some devices, not others

With jm:1.3.1 jq:19.1...this code works in my samsung galaxy SIII device fine, it comes up 100%, I enlarge it with 2 fingers, and scroll over to any area.  Other earlier samsungs can't get the enlargement. So problem is how to get report image to load at certain larger than viewport size and allow horizontal scrolling. My first post, sorry if not giving all info needed or not clear.
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="report.aspx.vb" Inherits="report" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title>Report</title>
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta charset="UTF-8">
  <link rel="stylesheet" href="js/jquery.smallipop.min.css" type="text/css" media="all" title="Screen"/>  
  <link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.css" />
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.3.1/jquery.mobile-1.3.1.min.js"></script>
  <script src="js/modernizr.js" type="text/javascript"></script>  
  <script type="text/javascript" src="js/jquery.smallipop.min.js"></script>
</head>
<body>
  <form id="form1" runat="server">
  <div data-role="page" id="reportpage">
    <div data-role="header" data-theme="b" style="text-align: center;">
      <a href="#" data-role="button" data-icon="delete" data-iconpos="notext" data-inline="true" class="exit">Icon only</a>      
      <h2>Oil Analysis Labs</h2>
      <a href="#" data-role="button" data-icon="delete" data-iconpos="notext" data-inline="true" class="exit">Icon only</a>      
    </div>    
    <div data-role="content" id="rpt" >
      <img src="images/mobileeg.gif" width="100%" />        
    </div><!-- /content -->
<script type='text/javascript'>
  $("#reportpage").on('pageinit', function() {
    $('.exit').on('click', function() {
      $.mobile.changePage("mcontrols.aspx", { transition: "slideup" });
    });
  });
</script>
</div><!-- /page -->
</form>
</body>
</html>