jesse I think the standard recommendations include:
- Factory reset
- Dial
*#*#CHECKIN#*#* (*#*#2432546#*#*)
- Send it back to the seller
Note that in order for the "Check-In" step to work the device needs genuine unfiltered access to the Internet, i.e., if the router has an ad blocker or a content filter or a built-in VPN, etc., those are all candidates for blocking the unlock.
jesse Just trying to figure out how to not have this happen again.
Buying from a seller who says "factory unlocked" (not just "unlocked") may help. Buying from a seller with a good return policy is probably prudent.