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  1. Default Security Master Code For DCT-3 and DCT-4 phones.

    All the users who have forgotten their Security/Lock Codes need not worry. You just need to know your IMEI (International Mobile Equipment Identity) number.

    To check your IMEI number, type *#06# on the main screen. This number can also be found on the backside of the handset. Just remove the battery.

    You can visit a site which will calculate the Master Code of your phone. This code can be used to change your present Lock/Security code.

    Log in to see links


    Note :
    1. Lock/Security Code is not the PIN Code.
    2. If you want to remove the Service Provider Lock, then this is not what you are looking for.
    3. The Master Codes are only for DCT-3 and DCT-4 phones.


    Check this list if you are not sure if your phone is DCT-3 or DCT-4

    Log in to see links

    "Remember This is for DCT-3 & DCT-4 Nokia phones only it will not work on DCT-5 or BB5 Models."

    Also neither i, nor Mobiles24, can guarantee 100% accuracy.

  2. Default

    where do i enter the number it gives me

  3. Default

    Quote Originally Posted by siddall2k3 Log in to see links
    where do i enter the number it gives me
    You type it into your phone when turning it on, your phone will ask for the security code and you then enter it, you can then go into settings and security and change it to something that is easier for you to remember if you wish.

  4. Default

    Quote Originally Posted by amaway Log in to see links
    You type it into your phone when turning it on, your phone will ask for the security code and you then enter it, you can then go into settings and security and change it to something that is easier for you to remember if you wish.
    i forget securitycode ihave nokia 6680.pls tell me how removed or changed.

  5. Default

    Quote Originally Posted by cheemasb Log in to see links
    i forget securitycode ihave nokia 6680.pls tell me how removed or changed.
    Your Phone is a BB5 phone. i suggest you contact your service provider to see if they can offer you any assistance or take it to your local Mobile Phone Dealer and get an engineer to sort the problem, this code only works on DCT - 3/4 phones.

    Always a good point to try and use Security Codes that you are not going to forget, saves a lot of trouble and expense in some cases.


    Found a tutorial claiming to unlock BB5 phones, you can read it here;

    Security Master Coder For Nokia BB5 Phones
    Last edited by amaway; 12-02-2009 at 11:09 AM.

  6. Default Nokia 1100

    hey dear i have nokia 1100 and i forgot its security code.
    what can i do pls tell me..
    thanx in advance.

  7. Default

    Dude this doesnt work for nokia 6030 i tried but its a DCT-4 phone

  8. Default

    I have a "bluetooth" handset(chinese phone) that i had forget the phone lock code before 20 days.now i am unable to open the phone could not remind the code. please help me that how can i unlock the phone.If any alternat could have with you please reply me at debasish911*********** .

  9. Default

    i have a couple of Nokia cells, 3 to be exact lol, I just dont know what bracket they fall in to, DCT3 - 4, 5 BB and so on??
    Nokia 6020b Type: RM-331 - Fido
    Nokia 1661-2b Type: RH-121 - Fido
    Nokia 6103b Type: RM-162 - Rogers
    I also have that program Ultimate Unlock Cell Code Calculator but that leaves me at the same situation I'm in now
    Please Help
    Thanks SO much in advance,
    Please let me know if you need any other info from the cells,
    New to this and this site, when will i know if I get a reply???
    Thanks again
    This site is awesome, keep up the awesome work Mobiles24

  10. Default

    hi please i hav forgotten security code of nokia e75 ime # 356855026933728 furqan.hashmi2000***********... plz help me..

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