Android UMS got scrwd by usb_modeswitch in Ubuntu box

Boxes in my lab boot Ubuntu-based distros (mosty 12.04LTS). I hate the fact that it won't read my Android phone which I've set to mass storage mode (UMS).

The problem lies in the fact that my phone's ID (from lsusb) is:
Bus 001 Device 007: ID 05c6:f000 Qualcomm, Inc.
which unfortunately is the same ID with some random USB 3G modem. D'oh!

Rather than dealing with usb_modeswitch I'm unfamiliar of, I'd just remove the package. who needs 3G modem from boxes directly connected within internal AS circle anyway?  
# apt-get remove usb_modeswitch

Now the pain is gone.