My organization uses laptops with an internal modem to authenticate to a Microsoft domain via APN. With windows 10 the operating system classifies the internal modem as a network adapter in the device manager and not as a modem and it is not possible to preset the operator's APN to be able to validate the credentials on the authentication screen.
This can be done on Windows 7 with the Lenovo L450. We now have Lenovo L490 laptops, and on these we can no longer install Windows 7 because the hardware no longer allows it. We have hundreds of devices in this situation that we cannot use for the functions that were acquired and we cannot continue to use Windows 7 anyway!
The organization has authentication in its own Microsoft domain and professionals use laptops anywhere, especially on the streets in an urban environment, which requires using 4G networks to work on network data, namely queries and updating databases in real time.
External USB modems create the problem of breaking the USB ports as it is for intensive and professional use.
This is a very important issue for us, so I appreciate all the help you can provide.