Does this mean I can start answering my phone again? Are there other vectors for spam calling which are not addressed by this solution?
I really hope so. I stopped answering calls from unknown numbers until a year ago when I got a call from the same number twice and it was a paramedic calling to let me know my wife was in a car accident. She was awake enough to remember my number but her phone was lost. So now I can't help but answer calls from unknown numbers even though I know 999 out of 1000 of them will be spam. It's abusive and an incredible was…
In Australia a lot of it seems to target Chinese international students for some sort of visa-related scam ('Your visa is out of date, the police are coming, you need to pay your fees immediately in gift cards').