modem-manager-gui software package provides Modem Manager GUI, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install modem-manager-gui
modem-manager-gui is installed in your system.
Make ensure the modem-manager-gui package were installed using the commands given below,
$ sudo dpkg-query -l | grep modem-manager-gui *
You will get with modem-manager-gui package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | modem-manager-gui |
| Version | 0.0.16-2 |
| Description | Modem Manager GUI |
| Sub Section | Net |