I just downloaded the Ubuntu phone SDK and QT creator according to the instructions.
When I fire up QTCreator, I get a screen as shown
If I ignore this message and hit continue, there are no templates to create the Mobile application as indicated in the tutorial I'm following.
I tried installing qt5-default and qtchooser - problem still persists. Here is the error message
Cannot load plugin because dependency failed to load: RemoteLinux(2.6.82) Reason: Cannot load plugin because dependency failed to load: QtSupport(2.6.82) Reason: Cannot load plugin because dependency failed to load: ProjectExplorer(2.6.82) Reason: /usr/lib/i386-linux-gnu/qtcreator/plugins/QtProject/libProjectExplorer.so: Cannot load library /usr/lib/i386-linux-gnu/qtcreator/plugins/QtProject/libProjectExplorer.so: (libQt5Declarative.so.5: cannot open shared object file: No such file or directory)