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.
We can definitely take a closer look into why you're experiencing this issue with your unlock request. Please try dialing *#06# on your mobile phone to make sure that you have the right IMEI. Also, before submitting an unlock request on our Device Unlock Portal, please be sure to review our Unlock Eligibility Requirements to find out what's needed to unlock your AT&T phone. Let us know if this helps.
Sean, AT&T Community Specialist
Need help? Ask a question to get help from the AT&T Community or support from AT&T specialists. If this reply helped you please use Accept solution to mark it as an Accepted Solution.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.