Vodaphone USB Broadband on Linux

What you will need:

1. usb-modeswitch-2.0.1.tar.bz2
2. usb_modeswitch-data
3. libusb-1.x

Right after you install those files on your linux box, append these three lines in a terminal:

usb_modeswitch -WD -v 12d1 -p 1526 -n -M 555342437f0000000002000080000a11062000000000000100000000000000 -I -w 500

modprobe option

echo "12d1 14cf" > /sys/bus/usb-serial/drivers/option1/new_id

Open your network manager window, select Mobile Broadband, create a new connection and for connection settings leave them as default, just set the password to 1234.

Plug-in your Vodafone USB and that's it !
                                                                                                                                           [Source]