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SGS3 GN2 Unlock

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Tenshi Hinanawi edited this page Dec 3, 2012 · 1 revision

For some unknown reason, the SGS3 can be easily carrier-unlocked without using any unlock code. Just set this menu option and you're good to go.

This unlock is permanent, and will not void your warranty as we know it.

Note that on non-native carriers, you might only get EDGE or 3G service, limiting the usefulness of the unlock. This is because all carriers use different bands, with only a few overlaps in 2G and 3G.

Supported Models

Generally, all GSM variants of SGS3 and GN2 will work with this method. It might even work with other Samsung phones, so report in if it does.

  • T-Mobile Samsung Galaxy S III

  • T-Mobile Samsung Galaxy Note II

  • AT&T Samsung Galaxy Note II SGH-I317

  • Samsung Galaxy Note II GT-N7105

  • Samsung Galaxy Note II GT-N7100

CDMA versions (Verizon, Sprint, MetroPCS) cannot be unlocked with this method.

Prerequisites:

  • SIM Card from another carrier (use a friend's?)
  • Stock ROM; Custom ROMs will not work. Flash back to stock before proceeding.

Method

{{Note|If this method works for you, consider giving a small donation to XDA user owl74, who discovered the method.}}

  1. Insert the non-native SIM card into the phone and turn it on.
  2. It will ask for an unlock code. Just click Dismiss.
  3. Open your phone app and dial {{Code|*#197328640#}} . That is, Asterisk Pound One Nine Seven Three Two Eight Six Four Zero Pound.
  4. Select the options: Main Menu > [1] UMTS > [1] Debug Screen > [8] Phone Control > [6] Network Lock > Options [3]Perso SHA256 OFF
  5. After choosing the last option, wait for at least 30 seconds.
  6. Press the {{Key|Menu}} button and select Back. You should now be in the [6] Network Lock section.
  7. Choose [4] NW Lock NV Data INITIALLIZ .
  8. Your phone is now permanently unlocked!
  • If that didn't work, restart your phone and repeat the whole process up to step 4. wait 1 minute 30 seconds at step 5. Then reboot and continue.

Sources

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Introduction

  • Introduction - A quick intro to the rationale and ideals of this guide, and smartphone modding in general.
  • General Setup - Learn how to install and run the tools you need to succeed.
  • Device Guides - Customized, fully decked out guides for rooting each and every device we could find.
  • General OS Customizations - General customizations that work on all devices of a specific OS.

Content Guidelines

  • General Guidelines - The ideals that you should uphold while working with and editing this guide.
  • Device Guide Templates - Templates and general guidelines for creating customized guides for a device.
  • Linux - Run a full desktop OS on your little mobile device; research is being made to make it comfortable to use in the mobile space.

Reference

  • Glossary - Contains all the crazy acronyms and word soup that you'll need to wade through when using this guide.
  • Android Buying Guide for Modders - While modding can fix up an outdated device, it will make your life easier to buy the right device from the start.
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