Do you know Ajit Jaokar and Michael Mace? If not I suggest to head over and check out their blogs (here and here) for great insight into the mobile domain. Or, even better, use the opportunity to meet them in person on the 8th of September at the University of Berkeley, California at the Mobile Web Megatrends Conference on September 8th, 2008. Topics of the conference range from mobile browser evolution, browser offline capabilites, advertising models, the iPhone (of course…), mass market impact with Nokia's S40 6th edition, cloud computing, etc. etc.
Lots of other great speakers, I let the conference's web site speak for itself.
Definitely a conference not to miss if you can make it. Unfortunately my calender is already booked for that date so I won't be able to make it. But good for you since I have one free ticket to give away! First come first served.