Can I take a Flex application (currently running on the server), and easily convert it to a phone app? It is a self contained (no data access or any external connection). No, you can't. The mobile application is been designed and architect in a different way. It uses light weight component and the navigation is also different.
I believe it requires 4.5. We currently have 4.0. Is the upgrade included in the product? We (State of Illinois/DHS) currently have a contract with Adobe for our LC and Flex programs. I can provide the info on this if you need it. I think you have to pay extra for the update licence. Check the Adobe site for the same. But get the Adobe Flash 4.5.1 which supports iOS and Blackberry too.