Problem: I cannot see and choose WWAN from network devices (Windows 10 Pro 64bit). It used to work, so I am sure that modem is physically installed.
Drivers are OK, I have reinstalled fresh ones for Sierra Wireless EM7345 from Lenovo's support.
Could it be that modem itself or main board are somehow damaged? If you do not have any software based solution, I will claim warranty from the Seller.
1. Suggest you go to [Device_Manager]>>[Network_Adapters] and look for [Ericsson_N5321_gw] assuming that it's an OEM WWAN as supplied by ThinkPad/Lenovo.
Right-click [Ericsson_N5321_gw]>>[Update_Driver] to see if it helps.
2. Alternatively, you can install/run [Lenovo_Vantage] and update the driver for [Ericsson_N5321_gw] via ThinkPad/Lenovo.
3. ***If you *do*not* see [Ericsson_N5321_gw] in your [Device_Manager], suggest you return your unit back to your reseller ASAP;
there might be something wrong with the hardware.
4. Just curious, did your X1C3 (X1 Carbon 3rd Gen) came preinstalled with OEM Windows 10 (along with all ThinkPad-specific drivers),
or did your X1C3 came preinstalled with WIndows 8, which was then upgraded to Windows 10?
Current Thinkpads: X1E1 | X1C4 | X1C3 | X250 | X230 | T410
Retired Thinkpads: T42 | 560 (circa 1996)
~~IBM Thinkpad era computer bag !
They have 14 days according to the law, so I am waiting
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