06-12-2019 01:51 AM - edited 06-12-2019 04:48 AM
I see there is a sim card slot under battery bay in my ThinkPad L440. Do I need to install a WWAN card? What are the compatible models or specification I need to buy? Can I use 4G VoLTE sim?
06-12-2019 02:16 PM
Yes, you need a WWAN card. Here is the parts list which shows options:
I don't think all the L440 machines have the WWAN antennas. If you don't have the antennas, it is a much bigger problem. You need to remove the battery and the big door on the back to check. If you have the antennas, you will see two wires going to the WWAN slot between the CPU and the fan blades. Probably, one wire is red and one blue.