They contact you later (weeks or months later). And it’s contacting your phone number to attempt to convince you to unlink it, usually with some sob story or threat. They know the phones are worth way way less if they are blacklisted, so they’ll try all sorts of tricks. Apparently it’ll sometimes get sold and passed down to other scammers who try different tactics.

See this article on what that can look like:

https://www.phonearena.com/news/stolen-iphone-scams-how-to-p...