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My new Laptop is a Lenovo T470s (S/N PC0PXLX1) with a "Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A" WWAN card.
After working well for 6 weeks, I am now unable to get an internet connection using that adapter.
Windows 10 network diagnostics tells me I need to "Enter a SIM PIN2 to unlock the mobile broadband device". I can find no way to enter anything.
Tech support at both AT&T and Lenovo have never heard of SIM PIN2 and each blames the other for the problem. I have talked to each several times and have been referred to "advanced tech support."
My internet provider is AT&T.
This community has referred to a "provider specific software" that solved one participant's similar problem.
My provider, AT&T, has given me two PUK numbers. I suspect their PUK2 may be the SIM PIN2, but I still have no way to utilize that information.
HELP!
[Moved from: Windows Insider Program / Windows Insider Preview / Install, upgrade, and activate / PC ]
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I have two solution either update your windows 10 or try to restore os from recovery disk.
Though at&t is your internet provider but here error is related to software operating system so either Lenora or Microsoft can provide solution. To sim unlock pin for at&t here is the way mobile-cellphones.blogspot.com/2017/09/how-to-network-unlock-att-mobile.html.
This is a windows 10 problem nothing to do with AT&T or Lenovo, Win driver for LTE card needs to be updated, the WIN OS driver list is outdated. This is just a stupid message Microsoft puts out to fool us. Uninstall all drivers then reboot and re install driver and firmware update from lenovo, if still doesn't work download LTE driver from Sierra wireless and start the process over.
Microsoft has had this issue for long time and hasn't done anything to fix it.
I am still encountering the problem with SIM PIN2 which is annoying, but a simple restart from Windows power down /sleep mode (not even hibernate) fixes the problem. After a while the same problem occurs again, and a quick restart has it going again..
So, the problem still exists. Hard to know what is failing without source, and my guess is that the check for PIN2-check occurs on several places in the code and not all have been debugged. Somehow it seems as the check is inverted. If PIN2 IS enabled on SIM-card the Windows error do not occur, but then the SIM-card doesn't let the connection through. Do obvious the error is probably not that complicated, just not completely handled yet.
Microsoft - please fix!
The latest (Oct 2018) update fixed the problem.
I feel you Carl. I have the same issue with Lenovo X1 and already the second time since I started with a non-functioning cellular until finding the solution that worked earlier. Gone through the same path this time and if there's no working solution from Microsoft or Lenovo soon, I'll return the laptop and switch back to a brand that's not decapitated like this one.
-joe
