In that model, WWAN card (that's what the SIM card connects to, to provide WWAN/cellular service) was optional. Probably your laptop was not ordered with the WWAN option, so it doesn't have antenna or WWAN card. If the laptop already has the WWAN antenna installed, then it's possible to install a WWAN card and get it functional. If the antenna is not present, then the job would not be trivial. To install the WWAN antenna would require disassembling the display which, given that some parts are glued together and some are fragile, comes with a high risk of damage. Alternatively, you could replace the display with one containing the WWAN antenna. For internal cards, this Dell page has information:[URL] You can get external WWAN adapters that connect to a USB port. That would be a simpler solution than trying to install internal antenna and WWAN card.
I recently got a Dell Latitude 5400 that came installed with Windows 11. Before I have used a SIM to connect to the internet through a cellular network, but it seems to be unavailable on this laptop, even though it has a SIM card slot. It doesn't even give me the option in settings to look at cellular connection settings, only WiFi and Ethernet,What should I do?
My Dell Latitude 5400 cellular connection isn't working