I have a Joomla site that uses an iframe (via Jumi code) to pass through to a third party form (legitimate reseller/installer of the third party's products).  This works just fine on the Joomla site, even when displayed on a mobile device (I have tested on iPhone and Android so far).  

I have seen your reponse to posts like #4506 saying: "Joomla uses iframe tag to display content of external pages, but unfortunately this tag is not supported by most of mobile devices."  

However, the site does display the iframe form and function properly on mobile devices using the regular Joomla template (although of course the size/layout is not optimal).  What is the difference and how can I resolve this?

I didn't send a link because the form is for registered users, but if you are willing to look at it I can set up an account for you and send info separately.

Thanks.