PSA for (gamers) using mobile broadband boxes at home

As a large percentage of homes in Finland use a mobile broadband connection (4/5G box), and as I struggled for over an hour trying to find information on this topic and resolving the issue for a Finnish relative, I thought I would post here for information sharing purposes.

SIM cards provided for 4/5G boxes are usually restricted by something called Carrier-Grade NAT.
In short, this means that you don't get a public IP address like you would on cabled internet or on your mobile phone; instead, your carrier will split a single public IP address and use it for multiple 4/5G boxes.
This is a measure to save on available public IPv4 addresses, as these are slowly running out.

For most usage scenario's this is fine, but for certain cases it is a big disadvantage, for example:
– In online multiplayer games, for example Call of Duty, your NAT type will be restricted (Type 3), making it very difficult (often impossible) to join online lobbies.
– Some streaming services may see CGNAT as a VPN or account sharing, as the public IP is shared with other 4/5G boxes, and as such could take action against your account accordingly.

You can find the full list of disadvantages and further information here: Carrier-grade NAT – Wikipedia

However, depending on your carrier, you might be able to request a personal public IP address to resolve these issues.

Elisa has a webpage dedicated to CGNAT / Public IP addresses and how you can request a Public IP address free of charge, and what settings to change. See: Mobiililaajakaistan julkinen IP-osoite -ohjeet – Elisa

DNA similarly has a document on how to achieve this: MOKKULOIDEN JA PÄÄTELAITTEIDEN APN-ASETUKSET

And for Telia I found this webpage: Yhteyspiste ja Yhteyspiste Plus | Asiakastuki

I only have experience with Elisa's solution, and can confirm that this resolved the issues outlined above.
I imagine that following DNA and Telia's steps would result in the same, but it would be good to do your own research first.

The 'Security risks' regarding personal public IP addresses outlined by some of these carriers is exaggerated, and generally shouldn't be a concern (and surely not a reason to buy their additional services).
But again; do your own research first, and only take action when you feel comfortable doing so.

If you are doubtful if CGNAT is enforced on your network, you can use any "What's my IP" websites to show you your public IP address. If it shows ".NAT" in the address, CGNAT is active.

The goal of this post is not to have everyone switch to a public IP address, but to simply share centralized information about CGNAT and the issues that it can cause, as I wasn't able to find this information online easily (without knowing the proper terms). Please do your own research and determine necessity before taking any action.

Cross posting / translating for further sharing purposes would be much appreciated!
I hope this information will be helpful to someone that is facing the outlined issues.