Check from psref of X200 is the sim card reader for 2G or 3G internet. Then check is it enabled in the bios.

If you’re using Linux, then read this: https://wiki.archlinux.org/title/ThinkPad_mobile_Internet

Actually even better news! T440p supports now libreboot and it has an option for internal flashing! So from now on you have only excuses left ;) lol

https://libreboot.org/docs/install/#install-via-host-cpu-internal-flashing

It also deserves the Coreboot bios :)

If System 76 can offer open source firmware for their Intel laptops, then why Lenovo can’t?

https://github.com/system76/firmware-open/blob/master/FEATURES.md

What kind of question is this? Sell the Framework and use the money for maintenance of T480. Buy new batteries (Lenovo original if you can find a source) and dual-pipe heatsink (if your unit is missing the Nvidia gpu). Clean the dust and with compressed air and replace the thermal paste.

That T480 will serve you eternally. Especially with Linux. If someone is able to port Coreboot with Coreboot configurator into that model, donate some coffee money for the devs.

What are you even asking? There’s literally zero reasons you to force you to prefer Framework to T480. And some other might prefer Macbook over anything etc. The personal preferences aren’t a reason to force or argue.