Most P series of devices will support a nanoSIM? with an exception of handhelds which are all eSIM?. This is designed to allow the device to have a connectivity option that would otherwise be unavailable. A person can for example buy a P series computer, and insert a nanoSIM card in the computer, and now there is internet connectivity anywhere there is no trusting a wifi? network. This allows you to one, have a reliable connection without some shady Wifi network, and second your computer could still do file transfers while in the backpack to finish the job even if meant you are doing the file transfer on your cellular service.
Now I understand, if you are just starting off as a professional, you might need to use your phone’s 5G as a modem (assuming your carrier supports it). This is fine, but when you are ready to add cellular capability to your P Series device, then it is there if you need it. Senitrus will also offer an 5G router. This will allow to connect all of your devices to the router, and you are carrying your network connection with you everywhere you. go. No need to rely on the local wifi that might be compromised.