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
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All products, and company names, logos, and service marks (collectively the "Trademarks") displayed are registered® and/or unregistered trademarks™ of their respective owners. UnlockBase 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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Mark on 02/02/2026
This solution unlocked my very old iPhone XS Max which was locked to a Japan operator called Au (KDDI) with ease. No need to enter a special code or use an unlock app.
Haze Grey on 02/01/2026
Pensé que me iban a estafar xD Pero me arriesgué, hice el pago a buen precio, los técnicos se aferraban a venderme una rsim interna a precio estúpidamente alto. Pero aquí fue por la mitad 123dlls para un iPhone 16e esim de tmobile. Me decía que iba a durar hasta 24hrs, pero en la madrugada mientras pisteaba me metí y ya estaba liberado o: , le tomó unas 8-10hrs.
Si recomiendo. \m/
luis on 02/01/2026
for me loocks like a very good program but what i want to no if you guys going to unloock my sim carrier