The only idea is that issue is related to loaded javascripts that are quite heavy for mobile browser (because of iphone version of your site works fast in desktop browsers and has evident delay in mobiles).
And you have two plugins that load javascripts: Cdscriptegrator (actually, it just rearrange loading of jQuery by other extensions) and AvReloaded. As jQuery works well on mobiles (we know it because of our Elegance template uses jQuery Mobile), I'd try to disable AvReloaded plugin and test again.