To check if a Samsung phone is carrier locked, open Settings > Connections > More connection settings > Network operators and turn off Select automatically. If only one carrier appears in the list, the phone is likely locked to that carrier, as AT&T confirms that a status screen showing Locked means the device is restricted to its current network.
How to check if Samsung phone is carrier locked
The primary, documented on-device method for checking a Samsung phone's carrier lock status uses the network operators menu in Settings. Follow this exact path:
- Open Settings on your Samsung phone.
- Tap Connections.
- Select More connection settings.
- Tap Network operators.
- Switch the Select automatically toggle off.
After turning off automatic selection, your phone will scan for available networks. The results will tell you the lock status.
What the result means for your phone
If the phone shows only one carrier after the scan, AT&T states the device is likely locked to that carrier. When the status screen displays the word Locked, the phone is restricted to its current carrier and will not recognize other providers. If multiple carriers appear, the phone is likely unlocked and can accept SIM cards from different networks. This guidance applies across multiple Samsung models, including the Galaxy S24 Ultra, Galaxy A36 5G, Galaxy S21 5G, Galaxy A35 5G, Galaxy A17 5G, and Galaxy A16 5G.
Other ways to confirm carrier lock status
If the on-device method is inconclusive or you cannot access the settings, contact the carrier directly with your phone's IMEI number for official confirmation. Dial *#06# to display the device's IMEI number. Check carrier lock status by visiting the carrier's official website and entering the IMEI number in their compatibility/lock check tool. Inserting a SIM card from a different carrier and checking if the phone displays a locked or network unlock code message indicates carrier lock. The carrier can report the lock status from their records. This serves as a reliable fallback option when verifying whether you need to consider unlocking carrier phones from Verizon, AT&T and T-Mobile.
Frequently Asked Questions
What is a carrier lock?
A carrier lock, also called a SIM lock, is a restriction that prevents a phone from being used on another carrier's network. A locked phone can only operate with the specific carrier it is tied to.
Why do carriers lock phones?
Carriers lock phones to ensure customers fulfill contractual obligations, such as completing a service term or paying off a device installment plan. It also helps carriers subsidize the cost of discounted phones sold with service contracts.
Can a carrier-locked Samsung phone be unlocked?
Yes. Contact your carrier to request an unlock code if you meet their eligibility requirements. Some carriers provide instructions or codes to unlock the device directly. Third-party services and professional unlockers can unlock a carrier-locked phone for a fee.
Will unlocking my Samsung phone void its warranty?
Unlocking a carrier-locked phone may void its warranty depending on the carrier's policies. Check with your specific carrier before proceeding with an unlock request.
Does using a different SIM card damage a carrier-locked phone?
No. Inserting a different carrier's SIM card into a locked phone will not damage the device. The phone will simply display a message indicating it is locked or requires a network unlock code.
For the wider topic, see unlocking carrier phones.
