iPhone max-width is 480px not 440px
<meta name = "viewport" content = "user-scalable=no, width=device-width"/>
<meta name="apple-mobile-web-app-capable" content="yes"/>
This sets the viewpoint with the scaleable option off
<link media="only screen and (device-width: 768px)" rel="stylesheet" href="css/ipad.css" type="text/css" title="no title"/>
This is a css file for only iPad
<link media="only screen and (max-device-width: 480px)" rel="stylesheet" href="css/small-device.css" type="text/css" title="no title"/>
This is a css file for only iPhone
They are conditional comments so they will only apply to specific devices with specified max-widths.