Ok so on this app, called Mercari (where you can sell electronics and a lot of other stuff, it's safe), a transaction went with no problems. She got her iPhone 4, I got my $85.
*I reset the iPhone 4 to its original factory settings and basically wiped out every single thing that was originally on there. I took out the SIM card too. Since I wiped out everything, I believe it is unlocked.
Now she is saying that the iPhone 4 is still locked and that she has to pay $60 to unlock it. My dad thinks it's a scam to get some money back. (She paid $85 plus shipping). She has zero ratings on the app too, which makes the whole thing even more sketchy.
Is this a scam? Or does Metro PCS actually charge $60 to unlock it? Any help would be greatly appreciated. Picture of our conversation is included.