Am reading this slideshow about high performance mobile sites which provides great basic introduction into mobile development (eg I’ve never heard of “inline images” before watching this):
and trying to figure out the right strategy for building mobile site using symfony.
So far I was able to find only these articles/plugins which can be helpful for me:
(pretty old one post on symfony blog)
http://www.symfony-project.org/plugins/sfMobileJPlugin (plugin which includes a convenient class for mobile contents developers)
I guess this HTML5 Mobile App Framework will be useful for me too: