AT&T will unlock your phone if you meet their requirements, but the process depends on whether you still owe money on it

AT&T unlocks phones for customers who have paid off their device or completed their contract. If your phone is fully paid, AT&T can unlock it within a few business days. If you still owe money on the device through AT&T's installment plan, you must pay off the remaining balance before they will unlock it. AT&T does not unlock phones that are reported stolen or connected to an active fraud claim.

The unlock itself is permanent — once AT&T removes the lock, you can use the phone with any carrier that supports its network bands. You do not need to stay with AT&T after unlocking. The company performs unlocks for both postpaid customers (people on monthly plans) and prepaid customers.

Key Takeaways

  • AT&T unlocks phones only after the device is fully paid off or the contract term has ended.
  • You can request an unlock through AT&T's website, by calling 611 from your AT&T phone, or by visiting a store in person.
  • The unlock process takes a few business days, and AT&T will send you instructions by email or text.
  • If you still owe money on the device, you must pay the remaining balance before AT&T will process the unlock request.
  • Unlocking your phone does not affect your AT&T service or plan — it only allows you to use other carriers.

How to request an unlock from AT&T

You can start an unlock request through three methods: online, by phone, or in person. The online method is fastest if you have access to your AT&T account. Go to att.com/deviceunlock, sign in with your account credentials, and follow the prompts to enter your phone's IMEI number. You can find your IMEI by dialing *#06# on the phone itself, or by checking Settings > About Phone on Android or Settings > General > About on iPhone.

If you prefer to call, dial 611 from your AT&T phone or 1-800-331-0500 from any phone. A representative will verify your account and request the unlock on your behalf. You will need your phone number, account PIN, and the phone's IMEI number ready. Visiting an AT&T store in person also works — bring your phone and a photo ID, and staff can submit the request when ready.

What happens after you request an unlock

AT&T sends unlock instructions to the email address or phone number on your account, usually within one to three business days. The instructions vary depending on your phone's operating system. For iPhones, AT&T sends a link that you tap to complete the unlock through Apple's servers. For Android phones, AT&T typically sends a code that you enter in your phone's settings, or the unlock happens automatically without any action needed on your part.

After the unlock is complete, your phone will no longer show "AT&T" or a carrier lock when you restart it. You can then insert a SIM card from another carrier and use that network. If you do not receive unlock instructions within five business days, contact AT&T again — delays sometimes happen if the email was filtered as spam or if there was an error in the request.

Reasons AT&T may deny an unlock request

AT&T will not unlock a phone if the device is still under an installment agreement with an outstanding balance. You must pay off the remaining amount first. Check your AT&T bill or account online to see the payoff amount. Some customers can pay off the device early without penalty, though this depends on your specific plan.

AT&T also refuses to unlock phones reported as stolen or involved in fraud. If your phone was flagged this way in error, you will need to contact AT&T's fraud department to clear the flag before requesting an unlock. Phones connected to accounts with unpaid bills may also be denied, though AT&T sometimes makes exceptions if you bring the account current.

Unlocking a phone you bought from another carrier or retailer

If you own a phone that was originally sold by Verizon, T-Mobile, or another carrier, AT&T cannot unlock it — only the original carrier can. Contact the carrier that sold the phone to you. If you bought the phone from a retailer like Best Buy or Amazon and do not know which carrier it came from, check the phone's settings or box for carrier branding, or call the retailer's support line with the phone's IMEI number.

Some phones sold internationally or through unlocked retailers have no carrier lock at all. You can test this by inserting a SIM card from a different carrier — if the phone connects without asking for an unlock code, it is already unlocked.

What to do if AT&T's unlock process fails

If you received unlock instructions but the unlock did not work, restart your phone first — sometimes the unlock takes effect only after a reboot. If the problem persists, contact AT&T again and explain that the unlock failed. Provide the email or text message containing the unlock instructions so the representative can see what was sent to you.

In rare cases, AT&T may need to escalate the request to a technical team. This can add a few more business days. If AT&T cannot resolve the issue, you can file a complaint with the Federal Communications Commission (FCC) at fcc.gov/consumers/complaints — the FCC oversees carrier unlock practices and can pressure AT&T to resolve the problem.

Using your unlocked phone with a different carrier

After AT&T unlocks your phone, you can switch to any carrier whose network your phone supports. Check your phone's specifications to see which network bands it uses — most modern phones support multiple carriers, but older phones may not work with all networks. Before switching, contact the new carrier to confirm your phone is compatible.

You will need a SIM card from the new carrier, which you can obtain by visiting a store, ordering online, or sometimes picking one up at a retailer. Insert the new SIM card, restart the phone, and follow the new carrier's set up instructions. Your AT&T service will end once you switch to the new carrier, so make sure you have transferred any important data or contacts first.

Frequently Asked Questions

How long does it take AT&T to unlock my phone?

AT&T typically sends unlock instructions within one to three business days of your request. The actual unlock process — tapping a link or entering a code — usually completes when ready once you follow the instructions. In total, expect the entire process to take three to five business days from start to finish.

Do I have to stay with AT&T after I unlock my phone?

No. Unlocking your phone does not obligate you to keep AT&T service. You can switch to another carrier when ready after the unlock is complete. Your AT&T plan will end when you stop paying the bill or formally cancel your account.

Can AT&T unlock a phone I bought used or secondhand?

Only if you are the account holder or an authorized user on the account that originally purchased the phone. If you bought a used phone from someone else, that person must request the unlock from AT&T, or you must contact AT&T with proof of purchase and ask them to transfer the unlock request to your account.

What if my phone is still under contract with AT&T?

AT&T will unlock phones on active contracts as long as the device is fully paid off. If you are still making monthly payments on the phone, you must pay off the remaining balance first. Early termination fees do not explore to device unlocks — only the device balance matters.

Will unlocking my phone void my warranty?

No. Unlocking a phone through AT&T does not affect your manufacturer's warranty or AppleCare coverage. The unlock is a carrier service, not a modification to the phone itself. Your warranty remains valid as long as you have not physically damaged the device.