English Community

ThinkPad NotebooksThinkPad: X Series Laptops
All Forum Topics

6 Posts



10 Signins

110 Page Views

  • Posts: 6
  • Registered: ‎09-27-2018
  • Location: ZA
  • Views: 110
  • Message 1 of 4

WWAN NOT WORKING LENOVO X1 Carbon 3rd Gen (Type 20BS, 20BT) Model 20BTS0XH0N

2020-01-05, 17:02 PM

Hi Guys , since windows 10 November 2019 update aswell as latest Bios Updatefor my laptop - I noticed my Sim Card and WWAN not working anymore.

  1. Laptop has the latest Ericsson Drivers installed
  2. The Antenna finds my LTE Network
  3. APN saved 

Yet windows wont connect and keep me connected, and when I connect manually I get a error message?

Any Ideas?



I have reinstalled the WWAN drivers in device manager

I have done complete Network Reset in windows?


Sim Card is active and working (tested it in my IPAD)


Help please, need connection for work purposes



1815 Posts



697 Signins

10126 Page Views

  • Posts: 1815
  • Registered: ‎08-02-2018
  • Location: US
  • Views: 10126
  • Message 2 of 4

Re: WWAN NOT WORKING LENOVO X1 Carbon 3rd Gen (Type 20BS, 20BT) Model 20BTS0XH0N

2020-01-05, 17:45 PM

Hi Jabez! Try running the Network troubleshooter:
1. Settings --> Update & Security --> Troubleshoot
2. Select the Network Adapter option and click the Run the troubleshooter button.
3. Select all network adapter --> Click the Next button.


If the issue is the same, try reinstalling the WWAN driver from our website: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x1-carbon-20bs-20bt/20bs/downloads/driver-list/component?name=Networking%3A%20Wireless%20WAN. Let us know how it goes.

Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow us @LenovoSupport on Facebook and Twitter!


1 Posts



2 Signins

20 Page Views

  • Posts: 1
  • Registered: ‎03-30-2020
  • Location: US
  • Views: 20
  • Message 3 of 4

Re:WWAN NOT WORKING LENOVO X1 Carbon 3rd Gen (Type 20BS, 20BT) Model 20BTS0XH0N

2020-03-30, 23:48 PM

Facing a similar issue.

Proceeding to download the "exe" file with wireless module drivers from the download page 


or from the page


stumbled into a file size difference (1.8MB downloaded vs. 2.6MB mentioned on the download page) and the checksums mismatch.

Please kindly advise.



1 Posts



4 Signins

20 Page Views

  • Posts: 1
  • Registered: ‎07-31-2020
  • Location: GB
  • Views: 20
  • Message 4 of 4

Re:WWAN NOT WORKING LENOVO X1 Carbon 3rd Gen (Type 20BS, 20BT) Model 20BTS0XH0N

2020-07-31, 10:55 AM
This is STILL an issue for the X1 Carbon 3rd Gen, my 20BT machine has no functionality of any WAN/WWAN device, all drivers have the Code 56 Error: "Windows is still setting up the class configuration for this device" A Windows 8.1 installation on another partition works perfectly, so it's a Windows 10 driver issue, not a hardware issue. I've tried every "fix" on the internet to no avail. A clean install of Windows 10 fixes it temporarily, presumably due to an older build, but then Windows Update promptly lands you back where you started, by "updating" to drivers which don't work! very frustrating! Unfortunately due to this being a work machine, I am not allowed to turn off Windows 10 Update as I have with a personal machine, which by the way is not easy to do. Let's all hope we get a proper fix soon!
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop