How To Unlock Samsung SGH-i617 (Blackjack II)

June 22nd, 2009 by Eric

Samsung Blackjack II SGH-i617

To unlock the Samsung Blackjack SGH-i617:

Samsung Blackjack II, Subsidy Unlock, Step 1 Power on without SIM
Samsung Blackjack II, Subsidy Unlock, Step 2 Type in #7465625*638*
Samsung Blackjack II, Subsidy Unlock, Step 3 Enter the 8 digit unlock code.
Press OK
  Device should say: “Network Lock Deactivated”

*The 8 digit code can be obtained by calling AT&T Technical Support and given the representative the IMEI number. In exchange they will give you the Subsidy Unlock Code.

To obtain the IMEI number press *#06# on your mobile device.

 

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  • karthikambi
    i am also using to Samsung SGH-i617 (Blackjack II) but now i am in india , so how to i find my network lock code in AT&T pls help me
  • mobileslate
    karthikambi: You will have to probably use an online service to get the Subsidy Unlock Code.
  • mohan875
    I tried the above procedure with SIM card inserted, i worked fine. Without SIM i got SIM error and it didn't work.
  • mobileslate
    mohan875: Glad that it worked.
  • bobbymcsqaurepants
    I need help
  • mobileslate
    bobbymcsqaurepants: Can you be more specific about your problem?
  • bobbymcsqaurepants
    Do I have to be an AT&T customer?
    Because my friend gave me his Black Jack 2 upon receiving an I-phone for his birthday.
    And I would like to use it with my T-mobile SIM card rather than a horrible T-Mobile phone.

    So do I have to be an AT&T customer to get the unlock code or to unlock the phone?
  • mobileslate
    If you want to get the Subsidy Unlock Code from AT&T for free, yes, you will need to be a Customer. Alternatively, you can find an online Subsidy Unlock service, but will need to pay.
  • Annette
    Thank you for that advice. I was quick and simple! Can anyone give me some input on how to get rid of this error message "The remote party has ended this connection," trying to download email messages after this unlock?
  • mobileslate
    Annette: Not sure, it might be your email configuration. If it's "work email" you might want to ask your IT Admin. Alternatively, if it's gmail or yahoo email, try and see if they have an Online Support site.
  • Charles Marslett
    My unlocking experience: it kept failing until I put a SIM card in. In my case the only one I had was my AT&T SIM card but that worked: my modified procedure:
    1. Turn off phone with AT&T SIM care installed (normal, just like your plane is leaving the terminal)
    2. Turn on the phone but don't touch any keys until the LED settles down again.
    3. Enter "#7465625*638*" and it will show the "Enter Network Control Key" screen again.
    4. Enter the 8-digit unlock code and press the "Done" (left) soft key.
    5. A comforting message will appear (mine was not the "Network Lock Deactivated" but it did not say anything about an Error!)

    re: Robert Leavitt - yes it appears there are more than 1 kind of Blackjack II....
  • mobileslate
    Charles Marslett: Not sure why yours is giving you so much trouble. After you followed the instructions, did you try and use the device with say a T-Mobile SIM card?
  • Robert Leavitt
    Just successfully unlocked BJII with AT&T SIM card still in it! Would not unlock without SIM card. Very strange that some folks are successful with SIM card and others without SIM card.
  • Steve
    To John Doe,

    Thank you! Thank You! For your posting below about keeping the ATT SIM card in the phone while you unlock! Your instruction saved me hours of frustration, and perhaps money to as I don't have to buy or rent a phone while I am in Europe.

    Also, this unlocking instruction is very good otherwise!


    Thanks again,

    Steve
  • John Doe
    This instruction will only work with the AT&T SIM Card in it. Otherwise, you will receive some kind of SIM Information Error message. So update this instruction to say not to remove SIM Card. Otherwise, it works. I just unlock my Black Jack II. Thanks.
  • mobileslate
    John Doe: Thanks for the info, glad it worked.
  • morlh
    I live in jamaica and i got my blackjack II from someone who lives in new york so i have no at&t sim to try. is there a standard 8 digit code?
  • mobileslate
    morlh: There is not standard code for the Blackjack II, each device has their own unique 8 digit number.
  • morlh
    Ok, I am trying to connect to the gprs network and it says " The remote party has ended this connection" and i was told by my network provider that the data has been lost so my phone is locked..
  • mobileslate
    morlh: Yes, most likely you need to find the "Subsidy Unlock Code"
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