I agree pretty completely with Harald Welte's comments regarding Symbian. I encourage everyone to take a look at his comments.
We are in a very precarious time with regard to the freedom of mobile devices. We currently have no truly Free Software operating system that does the job, and there are multiple companies trying to get our attention with code releases that have some Free Software in them. None of these companies have pro-software-freedom motives about these issues (obviously, they are for-profit companies, who focus solely on their own profits). So, we have to carefully analyze what these proprietary software companies are up to, why they are releasing some code, and determine if we'll be successful forking these platforms to build a fully software freedom phone platform.