Disjoint issues really. Phone scams mostly rely on the shoddy/lack of verification of caller id info as calls transit the network where it's not verified so they are unblockable (because they just use a different fake number every time). They're actually calling from one or a pool of numbers but you can't block and report them on the receiving end because the number your phone thinks it's blocking isn't theirs. This will do nothing to fix spam/scam without patching the issues with caller id.
Hardly disjoint. Most of the scams come from foreign networks.
It is actually because you can't do anything with the source phone number being tied to an identity if the scammers are freely able to spoof the number that the end networks and users see. Even if every network in the world adopted this it wouldn't matter if caller id isn't fixed so that you can actually see the source number to go ask who it is!
You can. Finland forces operators to stop routing non-verified and spoofed numbers. Spam gone.
https://www.tieto.com/en/cases/telecom/global-anti-fraud-mod...
As finn. I can verify scam calls are non-existent lately few do occasinally popup, but its like 2000 times better than before. When i learned about this originally, i was shocked like how this is not default?
They can also use VoIP. So just banning calls from abroad is not enough, you need to better regulate VoIP services.