I have specified an image to use as you can see from the following source in Chrome (basic single form test application)
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0" />
<link rel="apple-touch-icon" href="CD_icon.png">
<meta name="apple-mobile-web-app-capable" content="yes">
I can even click on the hyperlinked CD_icon.png and it will show me the image in a new browser window.
However on my iPhone (iOS 8.1.1) it will not display the image when I click "Add to Home Screen".
What am I doing wrong?