I've had an interest in mobile development for several years now. Where I work however, I don't have an opportunity to do much of it. Every once in a while though I get the chance to build a small prototype to use as a sales or demonstration tool. Being a Flash/Flex guy I of course turn to FlashLite to build these apps.
FlashLite is great for building attractive, rich interfaces in a relatively short amount of time. In addition, Adobe Device Central offers some fantastic tools for running simulations to check various conditions and situations. So what's the problem? The problem is (at least here in the States) that in most cases we are limited to distributing our applications to Windows Mobile 5+ devices only. Verizon does offer distribution program for developers to distribute their content but it is somewhat expensive and quite convoluted. This restriction severely limits how and where we as developers can distribute our applications. In my opinion this renders FlashLite an inviable option for developing mobile applications except in very targeted instances.
There is hope, however. The recently announced Adobe Open Screen Project aims to bridge this gap. To put it simply, Adobe plans to work with carriers and manufacturers to develop a standard platform that will run on PC's, devices and mobile phones. That platform will be SWF and FLV. If they can successfully pull this off it finally mean we can build our Flash (and AIR) apps and freely distribute them to any device available (which, with any luck, will include the iPhone). That will be a good day 
