NOT able to unlock iphone 5S
After using the AT&T unlock portal to unlock my old iPhone 5s. The response I get is "Looks like the IMEI number you entered doesn’t match an AT&T device. Try entering it again. Dial #06# on your mobile phone to make sure you have the right IMEI."
The IMEI and phone number is correct. Currently using prepaid service on this.
How could I get this phone unlocked?