How to unlock Samsung Galaxy S2 with GalaxSim unlock after upgrading to 4.1.2 Jelly Bean

galaxsim unlock android app

If we have updated our Samsung Galaxy S2 to latest version android 4.1.2 Jelly Bean by Odin, it may happen that we have lost the unlocking of the mobile and we will not be able to use it to call and receive calls until we unlock it again. If it shows us at the beginning the text «Network Unlock Pin» How can we release it easily, quickly and for very little money (2€)? with the Galaxy Sim Unlock app, available in Google Play. Let's see how we did.

Considerations:

REMEMBER, if you carry out this process, it is under your responsibility, if you leave any of these steps to chance, you may find yourself with a mobile phone turned into a brick as a paperweight, worth several hundred euros, check the comments on this article to see what other users who have done it think. The author of this article disclaims any problems that may arise from this process.

In order to release our android phonewe should have it rooted, as we explain in our article root samsung galaxy s2 android 4.1.2 Jelly Bean. We must also have access to the internet via Wi-Fi, in order to download the Google play application.

Once rooted, we can use the app Galaxy Sim Unlock. This application has one point in its favor and that is that we can install it for free, to do the first unlocking test. The application will inform us if it is possible to unlock or not, as we say, with the rooted Galaxy S2. Once the app is installed, it will ask us for superuser/root permission that we will allow and after this, the application will show us the possibility or not of unlocking.

If the answer is positive and unlocking is possible, in our case it was with the Galaxy S2 I9100, press continue unlocking. It is at this moment when we have to pay, since it will download the GalaxSim unlock Pro application, which costs 2 € , we configure our mode of payment. Say that if it is the first time you buy on Google play, it will charge you €1 apart from the purchase of the application.

After this and if everything has gone well, the screen will show:

unlock galaxy s2

And with this our Samsung Galaxy S2 will be released. Apart from the Samsung Galaxy S2, it has been successfully tested on other mobiles such as those in the following list:

– Galaxy S: GT-I9000 (SGS), GT-I9003 (Galaxy SL)
– Galaxy S2: GT-I9100 (SGS2), GT-I9100T, GT-I9100P, GT-I9100G, SGH-I777
– Galaxy S3: GT-I9300 (SGS3), GT-I9300T, SHV-E210S
– Galaxy Note: GT-N7000, GT-N7100 (Note 2)
– Galaxy Tab: GT-P1000, GT-P1000R, GT-P7500 (Tab 10.1), GT-P7500R, GT-P3100 (Tab 2), GT-P5100

Doesn't work (currently) on:
– Galaxy S: GT-I9001 (Galaxy S Plus)
– Galaxy S2: SGH-T989, SGH-I727
– Galaxy S3: SGH-T999, SCH-I535, SPH-L710, SGH-I747
– Misc: GT-S5830 (ACE)

You can download this app on Google Play:

With this application we can also make a backup and restore the EFS folder.

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  1.   android said

    RE: How to unlock Samsung Galaxy S2 with GalaxSim unlock after upgrading to 4.1.2 Jelly Bean
    [quote name=”noncredi”]jailbroken my samsung in no time. no problem.[/quote]
    Great, you can help us grow and continue with this content, spreading our content by sharing with +1, like, tweet 😉

  2.   noncredit said

    good job
    i unlocked my samsung in no time. without problems.

  3.   android said

    RE: How to unlock Samsung Galaxy S2 with GalaxSim unlock after upgrading to 4.1.2 Jelly Bean
    [quote name=”randyisalive”]Hello, I have a little problem, I rooted my samsung galaxy sII as you put on your page and everything went perfect, then I released it with this application that you have put and everything was fine….I could call and that but when connecting with my data connection contracted with jazztel it doesn't connect...it's as if it wasn't unlocked even though the program says that it is. I have tried in another free mobile and if it connects. Could you help me? thank you very much.[/quote]
    I think you have to reconfigure the apn internet connection.

  4.   randyisalive said

    failed to release data
    Hello, I have a little problem, I rooted my samsung galaxy sII as you put on your page and everything went perfect, then I released it with this application that you have put and everything was fine... I could call and that but at the time of connecting with my connection contracted with jazztel does not connect…it is as if it was not released although the program says that it is. I have tried in another free mobile and if it connects. Could you help me? Thanks a lot.

  5.   peterssss said

    release free
    Downloading this application from galax sim pro, you can release it for free as long as it matches everything above, unzip it, copy the apk file on the sd, install it and hos will release it.

    I can also tell you how to root it if you don't have it.

  6.   isibt said

    RE: How to unlock Samsung Galaxy S2 with GalaxSim unlock after upgrading to 4.1.2 Jelly Bean
    Hello, I have the unlock code provided by the IMEI. It does not let me unlock the mobile in version 4.1.2 of android.
    The question is, if I go back to version 2.3 and release it, will it work if I go back to version 4.1.2??

    Thank you!!

  7.   android said

    root
    [quote name=”estipar”]is root needed on sgs2 for this process?
    Thanks a lot! :-)[/quote]
    100% necessary

  8.   android said

    root
    [quote name=”Ninfea”]Hello, the fact is that I keep the unlock code of my Samsung and I wonder if, once version 4.1.2 Jelly Bean is installed, I could continue using that same code.

    Thanks and regards. :lol:[/quote]
    If it is by imei, yes, besides that by imei it is unlocked forever.

  9.   android said

    root
    [quote name=”Saul Mijares”]Hello! It worked perfect for me!! I have a couple of doubts! One. The unlock only works with the rooted phone or can I unroot it? two. If a new android update comes out, do I have to pay back?
    Thank you!![/quote]
    With this method, if you unroot it, it is freed anyway. If you update to another version, I think you lose the release.

  10.   android said

    brilliant
    [quote name=”MGRyokero”]Works on Galaxy s2 NFC tested![/quote]
    thanks for the info 😉

  11.   mgryokero said

    RE: How to unlock Samsung Galaxy S2 with GalaxSim unlock after upgrading to 4.1.2 Jelly Bean
    Works on Galaxy s2 NFC tested!

  12.   Johnny M. said

    xcover 2 help
    Hello friends, I need help to be able to transfer the applications of my Xcover 2 to the external 8Gb sim, but all the tutorials are somewhat complicated, an easier one please on how to root my mobile. I'm desperate. thank you

  13.   schiavoni said

    happiness!
    Thank you, everything perfect with a Galaxy S2 I9100 operator Oi from Brazil.

  14.   marceS2 said

    for sure?
    I have a Claro S2 i9100, could someone do it with this operator?

  15.   Saúl Mijares said

    Questions
    Hello! It worked perfect for me!! I have a couple of doubts! One. The unlock only works with the rooted phone or can I unroot it? two. If a new android update comes out, do I have to pay back?
    Thank you!!

  16.   clatter said

    unlock samsung s2
    It worked for me the first time

  17.   Waterlily said

    unlock code
    Hello, the fact is that I keep the unlock code of my Samsung and I wonder if, once version 4.1.2 Jelly Bean is installed, I could continue using that same code.

    Thanks and regards. 😆

  18.   tibi said

    it worked first time! Thank you

  19.   marvin said

    I have done all the steps. I have the rooted cel install the busy box and in galaxsim unlook but I try everything and it is not unlocked I have a d3 19300

  20.   omega lion said

    [quote name=”estipar”]is root needed on sgs2 for this process?
    Thanks a lot! :-)[/quote]

    You can not read? makes it very clear

  21.   Gustizo said

    Greetings, very good post, I have the s2 with jelly bean and everything went very well, I just want to know if there is any Samsung system update or new Android OS, would the unlocking be lost? Thank you and I hope you clear me of that doubt.

  22.   Manuel said

    Hello, I unlocked my note 2 with galaxy sim unlock, but I have a query.
    Can I change the rom? or lose release?

  23.   stipple said

    is root needed on sgs2 for this process?
    Thank you so much! 🙂