In case you happen to own one of Samsung’s 2012 flagship smartphone, either the Galaxy S3 or the Galaxy Note 2, you’ll be happy to hear that you can unlock them from the shackles of your carrier free of charge. And you can do all that by yourself, as long as your handset runs a Jelly Bean version.
Naturally, we don’t encourage you to go for such procedures in the first place, and unlocking a handset that was purchased with a new contract agreement will surely be frown upon by your carrier.
But in case you want to use the Galaxy S3 and/or the Galaxy Note 2 with another GSM mobile operator, or sell the phone to upgrade to a different device, you should definitely check out this method.
xda-developer owl74 found a hidden menu in Samsung’s software that lets you perform the unlock from your own home. The method works on the GT-N7105 but other Note 2 models as well as some Galaxy S3 versions will let you do the same exact thing.
Redmond Pie describes in detail the steps you need to take to unlock either handset:
Step 1: On your Galaxy Note II, launch the phone app and press these keys:
Step 2: From the Main Menu, navigate to  UMTS > Debug Screen >  Phone Control >  Network Lock > Options.
Step 3: In the Options screen, choose  Perso SHA256 OFF. Wait for 30 seconds after making this selection.
Step 4: Go back one step by pressing the menu key, and then back once. You should now again be in  Network Lock
Step 5: Here, now choose NW Lock NV Data INITIALLIZ. Wait for one minute after making the choice.
Step 6: After a minute has passed, reboot your Galaxy Note II.
Have you unlocked your Galaxy Note 2 and/or Galaxy S3 yet?
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Would this work on galaxy S2 ?
this work on Rogers in Canada ?
yep worked for rogers , bell, and telus .. tried all 3 at work today. Just have to remove the sim card and use another carrier.
could you go into mroe detail with the steps listed above, i am doing this for a samsung note 2 locked rogers and I am afraid it will go into ‘brick’
are you serious? It goes through it step by step, need pictures?
yes lol! as it gives me a “Go Back, Menu does not exist”
I did the instructions on my Rogers S3. The menu was there. Is there anyway to confirm that it worked?
Change sim card with a friend?
Did not work on a T-Mobile S3
It worked on my T-mobile S3 after upgrading to JB 4.1.1
Works on note 2 from wind mobile same band as tmobile usa
Tested with Telus Galaxy S3 with Jelly Bean 4.1.1 -> WORKS. I was able to put in a Rogers SIM and make calls!
Would it work on Sprint CDMA network in the US?
would u be able to do this on a sprint phone and use the verizon prepaid?
Tested on my Canadian Bell Galaxy S3 SGH-I747 … Successfully unlocked! (Tested with a coworker rogers sim)
does not work on uk note 2, menu not used!!!!!. N7100
Asking questions on what to use it on, how about looking at it for yourself before you “BRICK” another new device….Freaking NOOBS!
I just tried this but when I pressed nw lock and initialliz nothing really happened. I waited and turned it back on though so will this work now?
Would I be able to use this in another country now?
After entering Network Lock, it says something like “Go Back, Menu does not exist”. What do?
are you on 4.1.1 ? you need to be. and it needs to be stock 4.1.1, custom roms do not work.
did anyone try this on ATT i317? thx.
Would this be a software or hardware based unlock ?? If I flashed a new ROM after completing the unlock, would I lose the unlock ??
Software and no losing it according to xda members. Once it’s done it’s done.
Works on my wind mobile note 2 used rogers chip to confirm and I was able to make calls with it
How can I reactiveated the unlock code prompt menú?
How can I reactivate the unlock prompt menu again?
Tested working Jan. 22, 2012. Successfully unlocked from Rogers network in Canada. Screw you Rogers.
After entering Network Lock, it says something like “Go Back, Menu does not exist”. so what should i do?
Doesn’t seem to work if running jb 4.1.2 ugh
in Galaxy s3 4.1.2 this Network Lock > Options. doesn’t exist what should i do now anybody help please
great instructions was able to follow until last step. I have jellybean4.1.2 and only have 3 options dang it wish I had not updated.
ROCK! Works on Rogers SGH I747M for andriod 4.1.1
Doesn’t seem to work if running jb 4.1.2 ugh, so left out and bought a code from a unlocking service codes2unlock. com in cheap price and unlocked my galaxy s3.