Unlock my Samsung J3 (2018)
I have been trying to get AT&T to unlock my phone for over three months. After inserting another provider's SIM card, the unlock code provided by AT&T have not worked. Now, upon rebooting, the phone is asking for "SIM network PIN blocked. Enter SIM network PUK".
How can I get the SIM network PUK so I can continue to use my fully paid phone? Thanks,