Re: [x]Ubuntu 12.10 - using usb modem
You might be going about this counterintuitively!
Your phone has the ability to access the 3G data network. It also has the ability to make phone calls. You can connect the phone to the computer.
The modem can access the 3G data network and connect to the computer, but it can't deal with phone calls easily.
Why not use your phone as a 3G modem? This is called "tethering". Phones that run stock Android, or that have been flashed with a community ROM, can share their 3G connection with your computer, or even create a wifi network for a handful of devices. It's a simple option in the settings.
If your phone doesn't run normal Android, check the Settings anyway as some device manufacturers keep it in. If the option is definitely not there, there's heaps of tethering apps in the Google Play store.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.