FM-World what about 5G?
Clicking on the link in my post reveals this text: "add support for force enabling VoLTE, VoNR and 5G for carriers where those aren't supported with the standard configurations". The text includes "5G".
FM-World is 5G issue resolved and working on unsupported pixel countries?
As my post stated, the situation depends on the country and the carrier.
It might be productive to start a new thread stating the country, carrier, and Pixel model, like "Does 5G work for a Pixel 8a on T-Mobile in Poland?".