Has anyone else noticed SIM cards in older T100 rover tablets intermittently failing, either by not recognizing that the SIM card is inserted or the cellular option completely disappearing from settings?
I would reinstall all of your network drivers.
https://mcs.trimble.com/
“T100/ST100 Driver Package”
I would also type “View network connections” into the search bar and take a peek at the network adapters that are showing in there. If updating drivers does not work, and the adapter doesn’t show up in that menu, it is very likely a hardware failure