SIM PIN2 to unlock mobile broadband device

Just register your device IMEI number like a cellular phone.

That’s all.

hi,

I just wanna share my experience with the error sim pin2 error issue.

since I have the same struggle with some of you.

I have Toshiba Portege z30-A without card include and without the SIM card hole on the machine body. but someday I upgrade my RAM size. since then I knew that the machine has a SIM card Slot and Modem Slot. then I figure out what WWAN card that default for the machine and it is Sierra EM7305.

I got the same issue that the Simcard or device locked due to sim Pin2 after installing them

I did this action to solve it:

1. finding a solution on the net return to the same problem
2. change Simcard from several providers (not solved) but working fine on my phone
3. update the drivers and firmware (not solved)
4. etc.

BUT the connection establishes after I did some action bellow and the error gone.

1. update the firmware to the generic version from last Vodafone version before ( find it on Sierra website)
2. the most important (i think) connect the card with the antennas. I tried without an antenna before. I use wifi antenna since I have no WWAN antennas.
3. when changing the Simcard, unplug the card then plugin again

I don't know if what I did is the default for change the Modem or Sim card but the most important is the error gone and never come back.

now I have the LTE connection from any provider I tried.

hopefully, you find this useful 

sorry for bad English

Oh my God, thank you so much for this.

I've had this problem for months and been recommended to contact my LTE provider, hardware's been inspected several times, drivers / firmware update and BIOS flashed, and time after time this issue keeps creeping. Although working in IT for more than a decade I literally didn't think of a solution as easy as this. It must be smth related to corporate computers and their IP/DNS settings. Mine is also a T470s with a "Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A" WWAN card & I had this issue couple of times each month, which normally resolved with full shut down, but occasionally not. Today it also didn't resolve with shut down, so I went googling yet again and came across your reply from a week ago. 

Really hope this issue is finally put to bed, but it did connect immediately after changing the settings and no more PIN2 locked for me :)

SOLUTION: Network Connections >> right click on the Mobile adaptor >> Properties >> double click on the Internet Protocol Version 4 (TCP/IPv4) >> set to Obtain an IP address automatically.

Leave the DNS server addresses as they are if they are in there.

Do the same for (TCP/IPv6)

Thanks a ton to the OP.

What finally worked for me was updating the manufacturer's (not Levono) WAN card firmware.  Once this firmware was updated, everything worked like a charm. Here's the link: 

https://source.sierrawireless.com/resources/airprime/minicard/74xx/airprime-em_mc74xx-approved-fw-packages/

You will have to select your carrier and either Windows or Linux and you may have to create an account to drill down but it's free.

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 ]

I had the same problem on my Lenovo. It was working OK and then for no reason it would not connect to internet and told me I needed to enter the SIM PIN2.

After some time I discovered there were fixed IP addresses and subnet codes in the IP4 and IP6 settings.

Network Connections >> right click on the Mobile adaptor >> Properties >> double click on the Internet Protocol Version 4 (TCP/IPv4) >> set to Obtain an IP address automatically.

Leave the DNS server addresses as they are if they are in there.

Do the same for (TCP/IPv6)