must...not...feed...the...trolls...
ok maybe just a little :)
Someone doesn't know what QT is.
To summarise: a cross-platform application toolkit.
Its used for KDE (that's on Windows, Mac, Solaris and Linux platforms, probably more) so probably not too hard to get running on Android.
The iphone has nailed one particular market segment. Nokia is so much bigger than that and plays where Apple wouldn't want to go. Most phones are distinctly closed systems and Nokia offers closed licenses to those who want them.
If you want to write cross-platform apps, you can start with QT on Windows and migrate to other OS's later if you wish. No messing with the GPL required.