Unlock my sim

this is a customer populated forum not at&t support, your phone isnt sim locked its network locked you need to request the unlock in the unlock portal if it meets all requirements

UNLOCK REQUIREMENTS

• Your device isn’t reported lost or stolen, or involved with fraud.
• You must complete your contract or installment plan (including early termination fees). Or, pay off an installment plan early and then make another unlock request in 24 hours.
• Your device isn’t active on another AT&T account.
• If you upgraded early, wait 14 days to unlock your old device. Business customers wait 30 days.
• Your service must be active for at least 60 days with no past due or unpaid balance.
• AT&T PREPAID℠ (formerly GoPhone®) devices must have at least 6 months of active service.
• If you’re military, we’ll ask you to email your TCS or PCS (Temporary / permanent change of station) documents for eligibility. You won’t have to complete installment plans or contracts.
• If you have a business-owned device, your company must authorize you to unlock it.
•  Go here if your phone meets all the requirements
•  https://www.att.com/deviceunlock/#/
• AT&T reserves the right to deny any unlock request that it concludes would result in an abuse of this policy or is part of an effort to defraud AT&T or its customers. AT&T further reserves the right to alter this unlocking policy at its discretion without advance notice.