I tried to find a great, advanced mobile network card manager to Ubuntu with GUI.

And I have found UMTSmon (only).

But, as they say in the download section:
"Debian, Ubuntu: For Debian, some .deb files are available, but these are not maintained in a coordinated fashion yet."

http://umtsmon.sourceforge.net/
"UMTSmon is a tool to control and monitor a wireless mobile network card (GPRS, EDGE, WCDMA, UMTS, HSDPA) in a laptop running the Linux operating system. It handles PIN codes, operator choice (roaming), signal strength and network statistics, sending/receiving SMS."
http://sourceforge.net/project/screenshots.php?group_id=159777

The move to less dedicated "computers" and more mobile devices and computing built into standard devices puts demand on software vendors to have or support hardware.

Ubuntu needs to partner with a manufacturer of "tablet" (iPad) and promote that people can purchase this tablet device which will run the Ubuntu netbook edition.

I can find tablets running Android and Windows Crap Edition (CE) but there is a distinct lack of tablet hardware I can purchase and install Ubuntu on.

I think there should be.