I bought an iPhone off eBay and the person decided to report it as lost/stolen and now my SIM card is suspended. Can I use the phone/fix it?

I bought an iPhone off eBay and the person decided to report it as lost/stolen and now my SIM card is suspended. Can I use the phone/fix it?

Read more: https://iphoneus.org/faq/i-bought-an-iphone-off-ebay-and-the-person-decided-to.html