When I order an Unlock Code for my Samsung Galaxy S3, what will I receive?
We provide you with the Unlock Code to permanently unlock your Samsung Galaxy S3.
In case your Samsung Galaxy S3 requires multiple Unlock Codes, all Unlock Codes necessary to unlock your Samsung Galaxy S3 are automatically sent to you.
We also provide detailed instructions on How To Unlock your Samsung Galaxy S3. In most cases the procedure is very easy:
Our Support Team is there to help with any questions you may have, please feel free to contact us anytime!
How to Unlock Samsung Galaxy S3?
The method:
NOTE: Make sure that Samsung Galaxy S3 PROMPTS for the code with a NON accepted sim card and that your IMEI is correct by dialing *#06#.
Go to the Dial pad and dial *#197328640# .
Please click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK.
You will see 3 options.
Please click on number [1] Perso Sha256 INFO, the screen will change slightly.
Please hit the MENU button then when the menu pops up please carefully hit BACK to return to the previous screen.
Next Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message.
Restart Samsung Galaxy S3 on the screen by holding the power button and click RESTART.
When Samsung Galaxy S3 prompts for the unlock code, simply enter the unlock code provided to you.
Your Samsung Galaxy S3 is now permanently unlocked!
Update 24 August 2013: If you trouble to enter code and/or if code is not accepted, then please follow the instructions below :
NOTE: Make sure that Samsung Galaxy S3 PROMPTS for the code with a NON accepted SIM Card and that your IMEI is correct by dialing *#06#.
Go to the Dial pad and dial *#197328640# .
Please click on number [1] UMTS > [1] Debugging screen > [8] Phone Control > [6] NETWORK LOCK.
You will see 3 options.
Please click on number [1] Perso Sha256 INFO, the screen will change slightly.
Please hit the MENU button then when the menu pops up please carefully hit BACK .
(to return to the previous screen).
Please click on number [2] Perso Sha256 ON, the screen will change again to a one line message.
Restart Samsung Galaxy S3 on the screen by holding the power button and click RESTART.
When Samsung Galaxy S3 prompts for the unlock code simply enter the unlock code provided to you.
Your Samsung Galaxy S3 is now permanently unlocked!
Any suggestion? Want to help us improve our Guideline to unlock Samsung Galaxy S3 ? or those are not accurate ? Please contact us
Other names for Samsung Galaxy S3
Samsung i9300
Samsung Galaxy S III
Samsung GT-I9300
Unlock Code Shop is an incorporated company, we've been unlocking cell phones for 22 years now and strives to provide the best service for our clientele.
All products, and company names, logos, and service marks (collectively the "Trademarks") displayed are registered® and/or unregistered trademarks™ of their respective owners. Unlock Code Shop is not associated with or sponsored by Samsung. The authors of this web site are not sponsored by or affiliated with any of the third-party trade mark or third-party registered trade mark owners, and make no representations about them, their owners, their products or services.
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Permanent Factory Unlock
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Our Last 4 Certified Reviews
Kierra D on 02/09/2026
Was extremely skeptical ! Worth the money spent
Love it here fast turn around on 02/09/2026
I am so happy with this process so I first discovered this website on Reddit or whatever and I seen people talk about it some had good reviews some had a negative experience but that negative experience was corrected so I decided to take a chance and use the service and legit I don’t even believe it was a full 24 hours before my device was unlocked. I’m totally happy. definitely will be using again.
Jeremy on 02/09/2026
I was very skeptical at first after reading different reviews on unlocking services. I came across Unlock Base and was impressed by the amount of positive reviews they received. I decided to give them a chance and in just under 20 hours they were able to unlock my iPhone 16pro. I truly appreciate their service and recommend anyone who needs their device unlocked to give them your business
Steve O. on 02/08/2026
I tried unlocking my ancient BlackBerry 9300 using another service MobileUnlocks.com, but it was a scam - they first charged me 15 € for "eligibility" check and then wanted another 44 € extra for retrieving the unlock code.
Using UnlockBase.com I got what I needed at a fraction of the price. Took about 3 hours to receive the code, which worked. Paid via PayPall, so I had more control over the payment if something would go wrong.