It will take some serious development to run Qt on the Android platform. If your going to do it, you need to do it right, which means keeping the look and feel of applications to those that use the native UI kit. This gives you some restrictions also. It's not just a simple porting project, but something that needs to be carefully planned and implemented if it were to be an official version of Qt.

I don't think Nokia at the moment are willing to invest this amount of time, and I also think that they don't want to tread on other peoples toes (eg. Google), which is why also Qt does not exist officially for iPhone.