Not sure if Nokia will ever officially approve this, but there are people who are working on making Qt run on Android and iPhone. The Android port seems to be going well based on the
video. I found two iPhone Qt projects: one
here and then another one in
YouTube. The latter is somehow related to
Qt Lighthouse project.
It would be great to be able to run Qt applications on Android and iPhone. If Qt was ported to Android it would be easier for Nokia to start using Android OS in the distant future. Not that I would want that, though. I actually like Symbian^3.