I don't know if other travelers have run into this but somewhat regularly when I arrive in a different major metropolitan area, I will get scam-spam calls within a day spoofed from that area code despite the fact that my phone number has nothing to do with that region and I haven't been in that specific location either ever or at least a longtime. It happens in both North America and Europe.

I know fake base stations might not be the reason for scammers targeting my phone but would be curious if others have seen this and have their own hypothesis?