One thing though. Lately, I used an official Linux client in .deb format that is present in the storage in the modem accessed via Windows and somehow got it running.
Thereafter, I got successfully connected to the internet.
Also, the method works on both 12.10 and 13.04 with usb_modeswitch removed.
I also, disable the NetworkManager for completely while using it.
One thing though. Lately, I used an official Linux client in .deb format that is present in the storage in the modem accessed via Windows and somehow got it running.
Thereafter, I got successfully connected to the internet.
Also, the method works on both 12.10 and 13.04 with usb_modeswitch removed.
I also, disable the NetworkManager for completely while using it.