How to unlock my Mother's and Aunt's Lumia 640's
I'm trying to help my mother (76-yo) and aunt (79-yo) unlock their Lumia 640's. They have been ATT customers for 6-years and 8-years respectively and had an old 3G plan that was just sunset. However, when they tried to get unlocked, ATT first stated they couldn't confirm that they were purchased from ATT. They protested as they have the original boxes and the receipts. The agent instructed them to go into the ATT store and show them so the store could verify the receipt. The store agent said they can't do that but offered to enter the info into the portal. However, when checking the NUL cases, the unlock was denied. I spoke to tech support on their behalf for an hour on Monday and they got the unlock approved by their manager and entered a case, CM20220411 and stated it would be 24-72 hours and that I would receive an email (yes I provided my personal email). My mother received a "free text message" from ATT yesterday stating unable to unlock and to call customer service at 800-331-0500. The agent told them they don't have the unlock codes for the Lumia 640 as they deleted the whole dataset. (Edited per community guidelines) is that, are you serious or what? My mother and aunt have been good ATT customers and they're just getting a runaround. How do they unlock their phones?