$ sudo apt-get update
$ sudo apt-get install qtmobility-examples 

qtmobility-examples is installed in your system.

Make ensure the qtmobility-examples package were installed using the commands given below,

$ sudo dpkg-query -l | grep qtmobility-examples *

You will get with qtmobility-examples package name, version, architecture and description in a table

qtmobility-examples package basic information: