I was using jQuery Mobile. The listview framework is a big part of the performance problem.
Needless to say, the best advice I would give (that others have said here as well) is to avoid frameworks like jQuery Mobile. There many other reasons too...not least of which is that jQuery Mobile doesn't work on T-Mobile or O2 in the UK and parts of Europe. It appears these networks intercept all traffic and try to minify the JS and CSS before they deliver it to the phone. There is some part of jQuery Mobile that they choke on and the page doesn't render correctly. I've tested extensively using Perfecto Mobile and even the jQuery Docs & Demo pages don't work right (so I know its not just me).
Thanks for this info. I wasn't aware of potential carrier-specific issues so I'll make sure we take this in to account while testing. Have you raised this with the networks? I guess there's a chance that it could also affect non-jqm powered code.
Needless to say, the best advice I would give (that others have said here as well) is to avoid frameworks like jQuery Mobile. There many other reasons too...not least of which is that jQuery Mobile doesn't work on T-Mobile or O2 in the UK and parts of Europe. It appears these networks intercept all traffic and try to minify the JS and CSS before they deliver it to the phone. There is some part of jQuery Mobile that they choke on and the page doesn't render correctly. I've tested extensively using Perfecto Mobile and even the jQuery Docs & Demo pages don't work right (so I know its not just me).