The Lenovo T430s I have for work comes with a Verizon Wireless 4G card
   built-in. It took weeks to get it working on Windows 7. Turned out that
   I had a bad SIM card.

   Once I was able to get it to work in Windows, it was time to get it
   working in Ubuntu.

   The USB ID for the MC7750 is 114F:68A2. It is also listed in Windows as
   "Gobi 4000 HS-USB Modem".

   Ubuntu didn't recognize the 4G modem out of the box. I found a driver
   [1]here. [2]Here is more information. This modem wasn't in there, but I
   went ahead and modified the source to add in the USB ID. Here are my
   diffs:

   [3]sierra.patch and [4]sierra_net.patch

   Save these to the folder where you downloaded the driver. Then
tar xvf v3.2_1740_kernel-3.0.directIP.tar
cd v3.2_1740_kernel-3.0.directIP
patch  -p0 < ../sierra.patch
patch -p0 < ../sierra_net.patch
make
sudo make install

   and then reboot.

   Success! Or sort of. It showed up as registered on Verizon. I could see
   the signal strength. Finding the right settings for NetworkManager is
   the next step.

   There are three options for the number:
#777
*99#
*99***3#
*99***4#

   The username should be the phonenumber@vzw4g.com and the password is
   vzw.

   I'm still working on this. It isn't dialing, but I'm having a hard time
   finding the right combination.
     __________________________________________________________________

   My original entry is here: [5]Verizon Wireless/Sierra Wireless MC7750
   on Lenovo T430s with Ubuntu 12.0.4.1. It posted Mon, 10 Dec 2012
   20:31:56 +0000.
   Filed under: technology, Lenovo, sierra wireless, t430s, Ubuntu,
   verizon,

References

   1. http://www.sierrawireless.com/resources/support/drivers/linux/v3.2_1740_kernel-3.0.directIP.tar
   2. http://mycusthelp.net/SIERRAWIRELESS/_cs/AnswerDetail.aspx?sSessionID=DBDAF438E9974D7F879C90A87F046094DDVSFWVP&aid=44
   3. http://prjorgensen.com/files/sierra.patch.txt
   4. http://prjorgensen.com/files/sierra_net.patch.txt
   5. https://www.prjorgensen.com/2012/12/10/verizon-wirelesssierra-wireless-mc7750-on-lenovo-t430s-with-ubuntu-12-0-4-1/