Google argued that feature phones only had Java ME, which only included a small subset of Java's APIs, in contrast to Android, which includes significantly more Java (SE) APIs, as well as Android-specific APIs. My layperson understanding of that argument was that their use of Java was transformative because feature phones running Java ME were completely different from Android smartphones.

Indeed, Google spent a lot of time making this case to the jury. I could be mistaken, but I fear this is going to be the basis of a reversal on appeal, because what "transformative" means is ultimately a matter of law (indeed, the word itself comes from a Supreme Court decision rather than the text of a law), and to me Android looks completely different from previous things considered "transformative":

http://www.nolo.com/legal-encyclopedia/fair-use-what-transfo...

When you look at Android and then look at previous phones with Java and apps on them it's hard to argue it isn't transformative. The difference between SavaJe and Android is night and day.