Creating a mobile software platform is a challenging task. Below some reviews of Android, the Google mobile platform.

Dow Jones reports (shorter Wall Street Journal version here) that some software developers are experiencing considerable frustration writing for Google’s much-touted Android mobile platform.
Link found thanks to search engine land.

I know some of these problems. Nokia has three main software platforms (S30,S40,S60) and creating and evolving them is not an easy job.
I have worked on evaluating Nokia software platforms, focusing mainly on software platform evolution. Some of the challenges in mobile software platforms are described on my research papers.