How to see if carrier works?

You said your grandparents are using the hotspot on their phone, with what service provider?  If they are using AT&T successfully, then AT&T would be a good option.

Both T-Mobile and Verizon offer 5G wireless home internet. AT&T does not.

Purchasing a dedicated hotspot in order to test out the network is not a good way to go. First of all hotspot data plans are limited. The best price for the most data is a $90 100 gig prepaid plan.  If it turns out it's not the right service for you there's a $55 restock fee.

100 gigs is not very much data.  For perspective I go through about two terabytes a month. So I would use up 100 gigs in less than 1 day

Best way to find out if AT&T is a viable network in your area is ask people. People in your neighborhood. If they are using AT&T and say it's a good service then it might be worth trying out. 

Okay. I just thought it would be alittle easier on my dad to figure it out before getting the service since we don’t live near anyone and the maps are sometimes off. 

Yeah the maps are frequently generalized. And LTE devices are more reliable than the newly sold 5G devices.

You're asking questions without getting enough information. Are your grandparents currently using AT&T? If they are using AT&T already and are using the hotspot off their phone and the service works well, then AT&T would be a good option. However they might want to dig up an older, but still compatible LTE hotspot device, and be aware that they are going to be very limited in how much data is available.

Do they have people in their neighborhood that use Verizon phones and get great reception? Verizon does offer wireless home internet.  

But you have to gather more information than you have provided here in order to make an informed decision.

Hi Via_69, we are here to answer your inquiry regarding whether the AT&T Network will work with your hotspot device and in your area!

Thank you to our ACE formerlyknownas, for the helpful info. 

Here are some few tips to help you connect to our Network:

1. Confirm the type of wireless/Prepaid coverage available in your area with our AT&T Coverage map. 
2. Make sure your device is compatible to our Network. These are the devices that are tested and approved for the AT&T Network. 
3. Check out our data only plans to find out which plan is right for you. If needed. 

We are here if you have additional questions! Thank you for reaching out to the AT&T Community Forums!

Rhoda, AT&T Community Specialist 

My grandparents and my family all are under T-Mobile which works to an extent but we both live in the boonies basically. We don’t live near anyone and they don’t live near anyone. So that’s why I wanted to see if we could or if there was a way to get a hotspot device that has 5g capabilities since we would be using an iPhone 14 pro max as their internet. Right now they have the 13 which works perfectly but it needs more gigabytes or something for them to use and a phone is easier for them than a box. 

Get online and find out if Verizon wireless 5g home internet is available at your grandparents location.   

You don't want Att for hotspot