The following Video is a demonstration of Qt / Qml running on an iPhone 3GS.
Please Note that there also is a community effort going on to port pre-4.8 Qt versions to iOS on qt.gitorious.org
Since Lighthouse grew up, also the UIKit platform plugin went into the stock Qt 4.8 mainline, so if you get the sources for Qt 4.8, you’ll be able to also try out Qt on iOS. More on how to get up and running below. But there also have been a few fridays since then, and luckily I had some time to improve things on the initial version
Full information can be found at Qt Labs.