So this has been happening with my Koodo service for...I dunno, a decade.
I’m in New Brunswick, and often, when someone calls my iPhone from Ontario, it goes straight to voicemail, and doesn’t even show a notification until the ‘new voicemail’ notification comes up, then you can see the ‘missed call’.
So far, it’s only been calls from Ontario that do this. And it’s inconsistent. It’s happened on 3 different iterations of iPhone.
It is not due to them being blocked numbers….
It’s super weird.