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Unlocking the Blackjack SIM Card
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Unlocking the Blackjack SIM Card

So you want to unlock your Samsung Blackjack? Unlocking your Blackjack cell phone will give the ability to put the SIM card from any carrier in it so you can use on their network. This will let you use the incredible Blackjack on Sprint if you want too. Now you can go overseas and use a pay as you go SIM from a local carrier. Cool right?

I know my earlier post on “How to Perform an Application Unlock on the Blackjack” caused some confusion because some of you thought I was talking about a SIM unlock. I’m hoping this information helps.

How to Unlock Your Blackjack:

  1. First you’ll need to get your Network Control Key. The Network Control Key is a 8 digits unlock code. There are two paths to get your NCK. You can either call AT&T or ask for it. You may have to ask them to put you through to their tech department.  If you’ve never signed up for AT&T’s Service they may not give the code because your not a customer. The other way to get the code is to contact a cell phone unlocking service. They usually charge around $20 to get this code for you.
  2. Once you get the Network Control Key power off the phone.
  3. Remove the SIM card.
  4. Power on the phone back on.
  5. Enter #7465625*638*
  6. Enter Network Control Key.
  7. Press “OK” Soft key, not the Send or OK hard key.
  8. Power off the phone.
  9. Reinsert the new SIM card.

Based on the response from people that have tried this I assume it works. I have no need to unlock my phone because I live in the States and I enjoy using AT&T as my services provider. So please let me know if this does not work on either the original Samsung Blackjack or the Blackjack II. Good luck!

{ 120 comments… add one }

  • biggkuzz98 April 14, 2010, 11:32 pm

    I have a blackjack 2 I617 i want to unlock and use on T-Mobile. If I do so will all the functions still work? web browsing biggest concern.

    • joe May 12, 2010, 9:15 am

      does this work on the black jack 2 so i can use it with tmobile

  • Mark June 30, 2010, 11:55 am

    With some blackjacks you must have a SIM card from the original carrier and LEAVE it IN the phone during the unlocking. Also, once the phone reports a successful unlock their are sometimes other USER SIM unlocking codes that may be required. These may be the last four digits of the original user’s social or some other 4 digit pin. After unlocking my Blackjack2, I had to download a manual and then figure this out for myself.

  • Tom July 10, 2010, 8:04 pm

    Ok I entered the code and I got the device is unlocked or something like that and I’m ready to take this wonderful device elsewhere

  • Reed S August 4, 2010, 12:31 pm

    i had this fone before i got my new one and want to give it to a friend who has track fone service. does anyone kno if it works on that?

  • raghu August 10, 2010, 12:18 pm

    i need samsung sgh i607 unlock code from at&t network EMAI-352794010544213 please send me sir

  • Jen October 5, 2010, 4:32 pm

    I have the code and unlocked the phone with my old sim. I changed the sim to a prepaid one and it is still asking for me to unlock the sim, what do you do? I heard you cant use prepaid on blackjack 2 phones, does anyone know if that is true?

  • angel October 7, 2010, 4:15 pm

    please I am driving myself crazy my samsung blackjack2 is been locked and if I do it without the sim card i get as far as the network code once I put the code that att gave me matching my imei# it says sim failure happen I don’t understand if i put my sim in then it tells me this phone can only be used with a specific sim,enter the unlock code or insert anapproved sim,i don’t understand someone help this is crazy

    • jeff April 4, 2011, 4:30 pm

      here’s how you do it. turn off your phone 1st, then insert a sim card not associated with at&t, then it should ask you to place in the 8 digit code that at&t gave you, then afterwards let it synchronized by itself give atleast a minute or two, then try to call using the new simcard not associated with the at&t network… it should work, because it worked for me…

  • very sad person October 11, 2010, 11:02 am

    i just want the unlock code and im good so can u just give me

  • Jeff Castro April 4, 2011, 4:17 pm


    i’ve tried your process, it worked! thanks a lot… you’ve been very helpful!

    • austindale July 6, 2012, 4:39 pm

      could i have yur unlock code

  • ossama October 27, 2011, 10:53 am

    i have vodafone eygpt sim
    can i call customer service for assking for it ?

  • Paul December 7, 2011, 11:01 am

    i want to use this phone in Asia, do I unlock the phone or unlock the sim card?
    or do i need both? many thanks.

  • Tom January 15, 2012, 7:05 pm

    Does anyone have an unlock code for this Samsung Blackjack i607 phone, `I have AT&T as my carrier and they will not give me a sim unlock code, they only gave me a software unlock code

  • Tom January 15, 2012, 7:11 pm

    Can someone PLEASE help me. I want to unlock my Samsund Blackjack i607 so my D-I-L can use it. I asked AT&T for it and all they would give me is a software unlock code. I NEED a sim card unlock code so my D-I-L can use it for T-Mobile
    So what I am asking is “Could someone PLEASE give me the 8 digit sim card unlock code” I am on a fixed income and can afford to buy the code and my carrier, AT&T will not give me a sim card unlock code.
    Thank-You so Much
    PS; You can email me at mulescout@comcast.net

  • Vee March 26, 2012, 2:52 pm

    I got my code from ATT and these instructions still work. thank you!

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