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How to Network Unlock Your Samsung Galaxy S23 Ultra from AT&T

CellUnlocker How Tos
By Charlie Yu3:31 pm August 21, 2023

Hey there, tech explorers! If you’re looking to unlock your Samsung Galaxy S23 Ultra from AT&T’s network, we’ve got you covered. Follow this comprehensive guide to break free and use your phone with any carrier.

What is a Network Lock?

When you purchase a phone from AT&T, it’s tied to their network, restricting you to only use their SIM cards. This can be inconvenient if you want to switch carriers or use a local SIM card while traveling. Unlocking your phone removes this restriction, allowing you to use any carrier’s SIM card.

How to Unlock Your Samsung Galaxy S23 Ultra

Gather Necessary Information

  1. Find Your IMEI Number: Dial *#06# on your phone or check the settings.
  2. Note Your Phone Model: This information is essential for obtaining the unlock code.

Steps to Unlock

  1. Request an Unlock Code from AT&T:
    • Contact AT&T’s customer service.
    • Provide your IMEI number.
    • Ensure all bills and contract terms are fulfilled.
  2. Alternative: Use a Third-Party Service:
    • If AT&T cannot provide the code, reputable third-party services can assist for a fee.

Entering the Unlock Code

  1. Insert a New SIM Card:
    • Use a SIM card from a different carrier.
    • Restart your phone.
  2. Enter the Unlock Code:
    • When prompted, enter the network unlock code received from AT&T or the third-party service.


  • Incorrect Code Entries: If your phone becomes ‘hardlocked’ after too many incorrect attempts, you’ll need an MCK (defreeze) code to reset the counter.
  • Types of Codes:

Benefits of Unlocking Your Phone

Unlocking your Samsung Galaxy S23 Ultra provides numerous benefits:

  • Carrier Flexibility: Choose the best plan for your needs.
  • Travel Convenience: Use local SIM cards to avoid high roaming charges.
  • Increased Resale Value: Unlocked phones are more attractive to buyers.


What if my phone doesn’t unlock on the first try?

Double-check the code and try again. If the problem persists, contact AT&T or the third-party service for assistance.

Is unlocking my phone legal?

Yes, unlocking your phone is legal, provided you fulfill the contract terms with your carrier.


Unlocking your Samsung Galaxy S23 Ultra from AT&T opens up a world of possibilities. Enjoy the freedom to choose your carrier, save on travel costs, and increase your phone’s resale value. Follow our guide, and you’re on your way to an unlocked, flexible mobile experience.

Ready to unlock your Galaxy S23 Ultra? Start your unlocking journey today!

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