I recently came across online information about Social Media Week:
Social Media Week (SMW) is a global platform that connects people, content, and conversation around emerging trends in social and mobile media.
Delivered primarily through a network of internationally hosted biannual conferences and online through social and mobile media, Social Media Week brings hundreds of thousands of people together every year through learning experiences that aim to advance our understanding of social media’s role in society.
Although not focused only on mobility, much of it does look at issues related to mobile media. There’s a huge number of recorded clips of the conference sessions on their Livestream channel, with a wide range of topics – I haven’t looked through much of it yet, but it’s worth checking out, regardless of what your interests are!