Hi Oisin ONidh,
I think the issue is with the above auto generated code .
I guess the enterprise browser can handle only one <body> tag in a page.
When the above <body> tag is loaded , the browser ignores the below second <body> tag in the internet template (system generated) which contains attribute to set focus.
`<body class="MobileBody `class("~currdynpro", 1)`" `style_attr("~currdynpro", 1);
if (~currdynpro.speechenabled != "")` ev:event="load" ev:handler="#sayOnPageLoad"` else
` onload="setFocus('`~focusfield`');`~itsmobileOnloadHandler`"` end;
` onkeydown="return processKeyEvent(event);">.
So now I have to change in each screen and the above discussed meta tags after the 2nd <body> tag instead of writing in the device include. 
Hope I am clear 
.
Regards
Suman.