Infiltrate already passed. But they only had two mobile talk anyway. Secrets in Your Pocket: Analysis of [Your] Wireless Data by Mark Wuergler. Don't Hassle The Hoff: Breaking iOS Code Signing by Charlie Miller.
Shmoocon which I miss again, this is way to early in the year so every year so far I totally miss it. Talks: Building Measurement and Signature Intelligence (MASINT) Capabilities on a Hackers Budget: Tracking and Fingerprinting RF Devices for Fun and Profit by Brad Bowers. Intro to Near Field Communication (NFC) Mobile Security by Corey Benninger and Max Sobell. Android Mind Reading: Memory Acquisition and Analysis with DMD and Volatility by Joe Sylve. Whack-a-Mobile: Getting a Handle on Mobile Testing with MobiSec Live Environment by Tony DeLaGrange and Kevin Johnson. Credit Card Fraud: The Contactless Generation by Chris Paget.
CanSecWest is upcoming. So far no talks have been posted but I'm going speak on "Probing Mobile Operator Networks". This is a long ongoing side project of mine.
Links: Infographics: Mobile Security Android vs. iOS
The video recordings from 28c3 are online. Check out Harald's talk Cellular protocol stacks for Internet, Luca's and Karsten's talk Defending mobile phones, Sylvain's talk Introducing Osmo-GMR.