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Rooted phone not unlocking to all networks

Discussion in 'Android Devices' started by shocksl, Jul 29, 2013.

  1. shocksl

    shocksl Newbie
    Thread Starter

    Massive problem guys

    I rooted my S2. I get the yellow exclamation mark now when I start the phone!

    Ive downloaded busybox (installed it) and Galaxy S unlock ny helroz.

    I followed the instructions, it said it's unlocked my phone.

    But when I put a different sim in it. It asks for a sim unlock code!

    it worked on my other phone last year. Not sure why i cant do it now? :(

    does anyone have any suggestions/ solotions?

    ironass likes this.

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  2. kejlyCZ

    kejlyCZ Android Enthusiast

  3. shocksl

    shocksl Newbie
    Thread Starter

    thanks but it didnt work :(

    it says phone is rooted. Update it first.
  4. Medion

    Medion Android Expert

    There is a difference between rooting and sim unlocking. Most software unlocking tools simply do not work. You need to request an unlock from the carrier the device was originally sold on.
  5. shocksl

    shocksl Newbie
    Thread Starter

    Yes I know there is a difference. I have previousily unlocked a different phone this way:
    Steps I took:
    1) root the phone
    2)download busybox n and install on phone
    2) download Galaxy S unlock by helroz on phone

    That worked on my other S2, but that phone was on gingerbread. Perhaps this is not working anymore because this phone is using Jellybean??
  6. jhawkkw

    jhawkkw Chinchillin'

    It's very possible. Software updates tend to patch security exploits and that might have been what happened.
  7. shocksl

    shocksl Newbie
    Thread Starter

    how dod i downgrade to gingerbread?
  8. dynomot

    dynomot Android Expert

    Flash a GB ROM with Odin.

    It might be worth calling the phone's original carrrier for the proper unlock code. Here in the UK most carriers will I provide it. For instance Vodafone UK haven't sold a locked phone since 2010, and were happily givng the unlock codes out to older phones for free back then.
  9. Slug

    Slug Check six!
    VIP Member

    More or less, yes. Iirc, the bootloader that accompanied the 4.0.x (ICS) update stored the data for the network lock in encrypted form, rendering previous unlocking apps useless.

Samsung Galaxy S2 Forum

The Samsung Galaxy S2 release date was April 2011. Features and Specs include a 4.3" inch screen, 8MP camera, 1GB RAM, Exynos 4210 Dual processor, and 1650mAh battery.

April 2011
Release Date

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