Try this.. it works fine..
<!DOCTYPE>
<html>
<head>
<title>Action PopOver</title>
<script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script src="http://cdn.kendostatic.com/2012.2.710/js/kendo.all.min.js"></script>
<link href="http://cdn.kendostatic.com/2012.2.710/styles/kendo.mobile.all.min.css" rel="stylesheet" />
</head>
<body>
<div data-role="view" id="main" data-layout="app">
<div data-role="popover" id="myPopOver">
<div data-role="view">
<ul data-role="listview" data-style="inset">
<li >Print</li>
<li >Send </li>
<li >Export </li>
</ul>
</div>
</div>
</div>
<div data-role="layout" data-id="app">
<header data-role="header">
<div data-role="navbar">
<span>PopOver Demo</span>
</div>
</header>
<div data-role="footer">
<div data-role="navbar">
<a data-align="right" data-role="button" href="#myPopOver" data-rel="popover">Action</a>
</div>
</div>
</div>
<script>
var app = new kendo.mobile.Application(document.body);
</script>
</body>
</html>