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

qtmobility-dbg is installed in your system.

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

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

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

qtmobility-dbg package basic information: