I have reported this bug quite a few times, the modem itself takes time to be recognized and even then connecting with it is an issue in itself. When connected it invariably crashes the modem manager. Under Chakra with latest KDE 4.91 it works flawless. I will also try on Kubuntu with latest KDE and revert back.

Earlier versions of Ubuntu pre 12.04 didn't have this issue and if auto connect was selected, it would work fine whereas in 12.04, auto connect never works.

This bug is quite important as many in India use Photon, especially students who are now adapting Linux at a feverish pace and their choice is Ubuntu.