Ah... I do recall various themes now. However, on all three active carts, I've stripped out the themes to just the one I was using, and they aren't the responsive one. I downloaded the cart again but themes must happen on installation. Is it possible to zip the responsive theme and then I can upload to see if that will work? What is weird is that when pulling screen narrow, the carts do go to responsive, ie collapsed menus, but on iphone, they do not respond.
Never mind. I found out what to do.
Noting here in case I need to recall later.
theme>templates>page.dwt.php add viewpoint in header
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">