Understanding WWAN

[Help_Please2]

Processor, Graphic, Memory: Intel® Core™ i7-1065G7 (1.3 GHz, up to 3.9 GHz, 8 MB cache, 4 cores)+ Intel® Iris® Plus Graphics+16 GB Memory (onboard)(WWAN)

Hello, 

I am hoping someone can help me with this question. I am teacher who is trying to get internet for the upcoming school year since there is a possibility we could still be doing virtual learning. In the area that I live in I am unable to get WiFi through providers like Comcast and AT&T. 
I am interested in the HP Spectre x360 because of the WWAN option. Based on my research through google, (and please correct me if I’ve misunderstood anything) a laptop with WWAN can work anywhere there are cellular towers, it does not require Wi-Fi. In my area my cellular plan works fine, I can get on the internet just fine through my phone. 

My question is then, how does WWAN for the Spectre x360 work. If it has WWAN do I need to get a SIM card from my phone provider? Does the computer already come with a SIM card? 
Essentially, how do I set the computer up to be able to use the WWAN since I am buying the option that comes with WWAN? Is there anything else I need to do after purchasing the WWAN laptop? 

Thank you to anyone who is able to help answer this question for me. 

[banhien]

@Help_Please2 

Firstly your machine is a CTO machine therefore I can't get its REAL specs. Are your sure it has WWAN slot first ? Please use the following way to find out the model/product of your machine

         https://support.hp.com/us-en/document/c00033108

Normally WWAN card works as a phone and you need SIM can to work. Now we may be able to use eSIM on some machines but we still need WWAN card. Nearly all business machines have SIM slot but only around 10% of them have WWAN option (your machine is not classified under business machines)

If no available WWAN slot, please talk with your phone provider, they are very happy to offer other option for you.

When I was at work, I did not use WWAN on my work machine I shared USB adapter and/or pocket wifi because I only on call every second week. I could also use my phone as hot spot to connect. I'm a retiree now.

Regards.