Unlock Nokia Cellphone For Free Of Charge

This is an educational guide to unlock a Nokia cellphone via the generic mastercode for free of charge!

Also including some of the common GSM secret codes used by most mobile phone manufactures such as Nokia, Samsung, Sony Ericsson, LG, Motorola, etc.

How to unlock a Nokia cellphone that locked by a network service provider or telco provider?

Please take note that unlock a cellphone that bound to a contract or sponsored by network service provider might be illegal! I’m not responsible for any consequences arise, if you’re using this education guide for illegal purpose.

NokiaFree is one of the great freeware version of Nokia unlock code generator. NokiaFree is used to calculate the Nokia unlock code of most Nokia cellphone, ranging from Nokia DCT1 to DCT4 generation, with a wide coverage on most cellphone network service providers around the world.

NokiaFree is a freeware version of Nokia unlock code calculator that used to generate Nokia unlock code to unlock a Nokia cellphone that locked by a service provider.

What is IMEI code of a Nokia cellphone?

The NokiaFree user interface is quite straight-forwards, except that some of you might not know what is IMEI code of a Nokia cellphone. The IMEI code (International Mobile Equipment Identity) is a unique serial number tagged with each cellphone. Theoretically, there is no cellphone with duplicated IMEI code. Normally, user can retrieve the IMEI code by pressing *#06# on the keypad.

What is a Nokia DCT4 cellphone?

DCT4 simply refers to the platform and technology (particularly security) used by a Nokia cellphone.

Besides the IMEI code, NokiaFree requires the model of Nokia cellphone too. NokiaFree is well coded to unlock most, if not all, of the Nokia cellphone up to DCT4 generation.

If your Nokia model is not explicitly shown in the list, you may need to select the correspondent Nokia cellphone generation code, that’s DCT1, DCT2, DCT3, or DCT4.

For example, Nokia 7600, Nokia 8800, Nokia 8910, are among of DCT4 generation.

Having say that, NokiaFree is only working for Nokia cellphone of DCT1 to DCT4 generation, but NOT able to generate unlock code for Nokia N-Series (such as Nokia N73) or Nokia E-series (such as Nokia E50), which is categorized in Nokia BB5.0 generation.

As shown by NokiaFree Help dialog (by pressing the Help button), there are only five chances to get the correct unlock code to successfully unlock a Nokia cellphone! After that, it’s only able to unlock the Nokia cellphone via data cable (extra dollars to pay for expertise services)!

What is a Pin code and a Nokia security code?

Most of the Nokia cellphone supports 2 type of code, i.e. PIN code and security code. A pin code is the password used to protect the SIM card from unauthorized access. The Nokia security code, also known as Lock code, is the password used to protect Nokia cellphone from unauthorized access.

While enable both PIN code and Nokia security code (lock code) are essential to safeguard the interest of a cellphone owner, it could be a nightmare if you happen to forget them! Also, both PIN code and Nokia security lock code will be locked if you’ve entered wrong password for a limited number of tries!

Although, there are master codes used to unlock or reset the forgotten SIM card PIN code or Nokia security lock code.

In the case of forgotten PIN code, you need to get the PUK code (Personal Unblocking Key) from SIM card provider (normally it’s the cellphone network provider, such as T-Mobile, Vadafone, O2, Orange, Cingular, etc) to unblock the locked SIM card.

To unlock a forgotten Nokia security lock code, you need to get the 10-digits Nokia master code that’s generated based on respective IMEI code of the phone. Sadness to say that, this Nokia mastercode calculator is only works for DCT1/2/3/4 generation of Nokia cellphone. You’ll need a BB5 mastercode calculator to generate mastercode for Nokia N-Series (such as Nokia N73), Nokia E-series (such as Nokia E50), and other BB5.0 generation of Nokia cellphone.

What are the secret GSM codes for Nokia cellphone

Of course, *#06# is the most common GSM secret code, which retrieves IMEI code of a Nokia cellphone (and most other brands such as Motorola, Sony Ericsson, Samsung, etc).

*#0000# is used to retrieve software version, software release date, and compression type of a Nokia cellphone.

#pw+1234567890+1# is used to check the GSM network provider lock status.

#pw+1234567890+2# is used to check GSM network lock status.

#pw+1234567890+3# is used to check country lock status.

#pw+1234567890+4# is used to check SIM card lock status.

*#92702689# is used to check a Nokia cellphone serial number (IMEI), manufacture date (MMYY), purchase date (MMYY), last repair date (MMYY), transfer user data (not sure of its usage), and life timer (identical to total hours of the Nokia cellphone used to make/receive call, SMS, data download, etc). For Nokia N73, this secret GMS code is only displaying the life timer value. It’s identical to the All Calls duration (Menu -> Application -> Log -> Call Duration -> All Calls).

*3370# or #3370# is used to activate or deactivate EFRC (Enhanced Full Rate Codec) of a Nokia cellphone for the best sound quality. When the EFRC is enabled, it will reduce the overall talk-time by approximately 5%!

*4720# or #4720# is used to activate or deactivate HRC (Half Rate Codec) of a Nokia cellphone for a lower sound quality. When HRC is enabled, it will increase the overall Nokia cellphone talk-time for about 30%!

*#746025625# is claimed to send SMS for free, after the screen displaying SIM CLOCK STOP ALLOWED! Well, sadness to say that it’s just a rumor! Some source said that this secret GSM code is only used to enable power saving mode!

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Topic - Howto, Smartphone Search - BB5, Cellphone, DCT4, GSM, N73, Nokia, S60, Secret Code, Symbian, Unlock

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54 Comments so far

N73 Owner April 1st, 2007 4:08 pm

I’d came across this site and this site (GsmSolutionsLtd), both detailed that it’s almost impossible to unlock Nokia cellphones of BB5.

I’ m not sure that Dejan Kaljevic has came out a working BaseBand5 (BB5) unlock tool box. But, according to gsmsolution reply in thread, exceprt as follow:

…. the essence of BB5 is main procssor “RAP3G”. This name is codename used by Nokia to describe very good Texas Instrument integrtaed prcosseor developed for mobile solutions. It’s new technolgy OMAP 1710(up to 220 MhZ).

Most of the vital terminal/phone information such as locks, customisation etc have been encrypted/signed using a private key before downloading to the phone. This happens in the production phase.
If the information is is changed (ie lock status) the phone will recognise this and will not switch on.
The security system of the phone will apply a reset to the phone after 3 minutes if the security certificate is missing. If the certificate becomes corrupted the phone will reset every 30 seconds.

So to summerize:
BaseBand5 is structured in 2 blocks:
-application engine (AE) and cellularphone engine (CE)
-both are operating indepenently from each other (different OSes)
-both are heavily secured against modifications with all kinds of checksums and public/private key encryption (certificates)
-there is no direct way to communicat/interface CE (Unknown OS); only very indirectly through AE
-AE (Symbian) does not allow to load device drivers which are not included in the ROM (Z:\)
-unlock keys are not based on algorithms but on randomly chosen keys stored in some Nokia database where we probably never get access to
-private keys of Nokia are unkown and its also very likely that we never get access to it
-checksums of Nokia’s public keys along with some loader code are probably stored on processor (OMAP1710 has a internal ROM of 48kb, RAP3G could have something similar)
-RAP3G is not for sale, OMAP1710 is only for cooperated customers with high quantity sales (so no way getting virgin, non Nokia branded, processors to replace them) >>>>

the advice stated that:
DO NOT buy unlock software for Nokia bb5 handsets IT WILL NOT WORK
DO NOT buy unlock hardware for Nokia bb5 handsets IT WILL NOT WORK
jacob April 1st, 2007 4:49 pm

Another Nokia mastercode calculator for DCT3 - DCT4 at this site.

To find out the list of phones in Nokia DCT3, DCT4, BB5, etc, follow this link
uwais September 8th, 2007 6:09 pm

I forgotten my nokia security code which was i changed from12345 can you tell me please how to unlock it?
maserati September 14th, 2007 5:34 pm

i own a nokia 6085, which is a “DCT1″ generation.
the program “NokiaFREE Calculator” only supports “DCT2″ - “DCT4″.

please correct the text above.

please help me to find a free software to unlock my 6085…

thx, maserati
mehul October 6th, 2007 5:48 pm

i hae a nokia n70 and there are may problems eg.i dont get calls ,i have 2 put it on loud speaker to hear and its memmory card slot is not working

can u tell me what 2 do
jayan November 4th, 2007 11:30 pm

hii… i have forget my nokia n73 security lock code…..how can i get the code ……..
shahid November 16th, 2007 3:58 am

hi salame yarr i have n73 but that is i think having simlocked that is not accepting any sim card and showing the text ” sim card registration failed ” plz tell me what shuould i do now and i i bought by someone at that time that was running well but after 1 week that happend with me now plz reply me
Naeemuj December 16th, 2007 12:07 am

I forgotten my nokia n73 security code which was i changed from12345 can you tell me please how to unlock it?Thanks
swadesh December 18th, 2007 7:07 pm

I have usb cable & software of N1600 but its not detected in comp. Plz tell me abt its browser software
nick December 25th, 2007 9:05 pm

own a nokia 6085, which is a “DCT1″ generation.
the program “NokiaFREE Calculator” only supports “DCT2″ - “DCT4″.

please correct the text above.

please help me to find a free software to unlock my 6085…
Walker December 25th, 2007 11:06 pm

I just don’t believe that Nokia 6085 is DCT-1.
Kush December 28th, 2007 4:05 pm

Hi I have Nokia N72 and hae lost my security code i need the code as i have format my phone plz help me to regain it back plz will be waiting for ur reply reply on my e-mail. id
fezal January 6th, 2008 3:42 am

hi
i have n 73 i want to some softwer of sis file but that’s not suported do me fever wat must i do?
Ajitabh January 13th, 2008 2:48 am

Hi I have Nokia N72 and hae lost my security code i need the code as i have format my phone plz help me to regain it back plz will be waiting for ur reply reply on my e-mail. id
rao zain January 17th, 2008 5:10 pm

hello

i have baught a nokia n73 (used)

i wan to lock its keypad with a password but there is already a password in that slot but the lock is deactivated my the older user of my phone

plz tell me the way to break this code!
salman February 1st, 2008 6:26 pm

i have nokiaE50….
i forgot its security code…….
plz tell me what to do…………..will surely apritiate if u help me out…..
Ajay February 14th, 2008 10:14 pm

i have nokia n70 i forgot my security code please help me
starling February 18th, 2008 10:07 pm

I ve nokia N72.My mobile IMEL no. is 356966012027605.would you mind sendine me lock code for this…waiting for the reply..thanks you..
SHIVRAJ February 22nd, 2008 1:30 am

I have NOKIA N72 phone. I want that network name to be hidden from screen .
pls tell me solution.
Thanks.
sarmad February 24th, 2008 4:43 am

i m having N-72
i have forgotten my security code after changing that
please help me formating the phone so that i can reset the code
niyaz February 24th, 2008 6:33 pm

i have nokia n70 i forgot my security code please help me
AmirAshkanZeinoddini February 25th, 2008 8:31 pm

Hi I have Nokia N72 and hae lost my security code i need the code as i have format my phone plz help me to regain it back plz will be waiting for ur reply reply on my e-mail. id
manish February 25th, 2008 11:52 pm

I forgotten my nokia n73 security code which was i changed from12345 can you tell me please how to unlock it?
please tell
pranav February 27th, 2008 2:56 am

hi
i have changed lock code of n73 from 12345 to some number and now i have forgotten it plz plz plz help me
arnold15 February 28th, 2008 9:46 am

hello… i have nokia 6288 but the list on the application nokia 6288 is not inluded?/ what is the alternate unit for that problem??
Walker February 29th, 2008 3:17 am

@arnold and all, please vet through the very first comment for the reason.
mohd kashif February 29th, 2008 4:48 am

i have nokia 6085, which is a “DCT1″ generation.
the program “NokiaFREE Calculator” only supports “DCT2″ - “DCT4″.

please help me to find a free software to unlock my 6085
Walker February 29th, 2008 7:53 pm

Nokia 6xxx series is the largest family of Nokia phones, with most of them are mid-range to high-end containing a high amount of features. None of this series of phone is of DCT1.

6085 is a clamshell phone, out in 2007.
MN REZA March 4th, 2008 5:20 pm

I have Nokia N 70 handset. i used internet with this set. when i updated anti virus definition symantec Live update.. after complete download message appeared in restart . After restarting the phone doesn’t boot . what should i do now…??
Sirocco March 7th, 2008 4:27 pm

Hello,, i have forgotten te security code of my nokia 8800 sirocco gold.
How can i unlock it?
pleas help me.
Thanks for all
Naeemuj March 10th, 2008 6:03 pm

Hello,, i have forgotten the security code of my nokia n73.
How can i unlock it?
pleas help me.
Thanks for all
Stefz March 12th, 2008 5:10 am

Hy, please tell me how do i unlock my E50 security code.. i don-t know it and i don`t now how to find it… my IMEI is 351892016367364 . Please send me on e-mail the security code, pleasee!!! :(((
flow March 18th, 2008 12:24 am

Can i please have the master code generator algorithym steps,flow chart or psudo code
I need it for my assignment please.
before the “06 May”
Adeel March 30th, 2008 8:33 pm

i have forgotten my nokia n 73 security code , i had changed it previously. the IMEI is 356260010051241
Dee March 31st, 2008 5:30 pm

I have a nokia 6288 model. I forgot my security code and changed it from 12345 long ago. How can i hack into it?

Please help
ZIA AHMAD HAIDARI April 2nd, 2008 10:56 am

salam. whoever you are if you can help me in unlocking my mobile n70 music edition. i will really appreciate your cooperation.thanks
Awan April 3rd, 2008 2:50 am

hi i am awan krishna shrestha from nepal and i have nokia 6681.My imei is 355660002074013 and i lost my security code.Can anyone help me or mail me please.
Syed Omer April 18th, 2008 3:38 pm

For Any problem on N72 , N70 , N73 or Any N Series. Format it By Dialing

*#7370#

(OR)

Hold Call Button
While Holding iT Press *
While Holding this to hold 3
While Holding This three Buttons SWITCH OFF Ur Fone
Don’t Stop Holding
When the phone completely Switch Off
While Holding This Three Buttons Switch it On

Now Ur Completely Formated

Ur Out of any Problem
rahul April 23rd, 2008 10:34 pm

i want to format my NOKIA N72 so please give me formating code of this mobile
Tateyou May 1st, 2008 7:43 pm

Just for info, I earned a Nokia Sirocco. Need help to reset my security code. Thanks
Vijay Chouhan May 17th, 2008 3:15 pm

Hello,, i have forgotten the security code of my nokia n72.
How can i unlock it?
pleas help me.
Thanks for all
zaid May 23rd, 2008 10:59 am

Hello, I have a problem my nokia N72 phone is asking for PUK code, and it says that my pin code is blocked please help me.
Thankyou.
Walker May 23rd, 2008 5:29 pm

Hi Zaid, the PUK code is used to unlock forgotten PIN code.

PUK code is sort of master code and is normally given by SIM card provider (i.e. telco/mobile phone service provider) at FOC (free of charge).
Rahim May 25th, 2008 11:35 am

Salam, My girl friend just gave me a nokia n73 but it is tied to the phone company in Portugal and I am working abroad so I would appreciate that someone could help me to unlock it so I can use it abroad also! Thanks!
jude June 29th, 2008 6:19 pm

I have a nokia 6288 and I want to unlock it I need to know what generation it is? Thanks
Walker June 29th, 2008 9:30 pm

Nokia 6288 is of BB5 generation released on year 2006.
Sarah June 30th, 2008 11:13 am

Hi
I got the new nokia 3120 classic in Europe I tried to unlocked already but I was told in 3 different places that this phone cannot be unlock yet anywhere in the world its that true?

thanks from Chicago,
Walker June 30th, 2008 8:55 pm

Hi Sarah, I think the very first comment has spoken the answer…
akhtar July 19th, 2008 10:15 am

i have a samsung SGH-G600 phone, i am having a problem of network rejected while i am making a call and receiving a call, my phone is giving me a message of network rejected, i am getting this problem just on airtel and any other mobile network services as like vodaphone, idia, bsnl are working properly. and my airtel sim card is working properly in other phone. i am getting this problems on all airtel sim card. so plz give me a suggestion to fix this problem. plz………………………………..

your thankfully
Walker July 19th, 2008 10:24 am

Apparently, your phone IMEI has been locked by the telco, i,e. airtel.

Normally, once the IMEI is locked by one telco, the rest of the local telcos will follow as well.
How To Crack Targus DEFCON CL Laptop Lock BY CHANCE In 3 Seconds? - Walker News July 20th, 2008 1:41 pm

[...] there a master unlock code of this 30 over bucks cable lock, that allowed him to crack it so [...]
maja July 22nd, 2008 5:13 am

hi, I would like to know if it’s possible to unlock nokia 5310XpressMusic, because if it’s not,I won’t buy it :) thanx
Rodger July 30th, 2008 10:23 am

As Walker as already stated, but I want to re-enforce.. Nokia 6085 is NOT DCT1, it is BB5.

Maja - Expressmusic series is also BB5, so no it won’t unlock through the common free methods.. you will have to buy one that is already unlocked.

Sarah, the 3120 Classic is a BB5 phone, so manual user unlocks are not possible (at this time)
Rodger July 30th, 2008 10:33 am

to All, there is only a handful of BB5 phones that can be unlocked by IMEI#’s (at this time) most of them are phones that no one is selling anymore..

so before you buy, or before you perma-lock your phone by trying these free methods. Ask yourself this, how much will your Service Profider Charge to unlock it, and can you afford it or would you rather pay even more for a new (unlocked) phone….

that said, think hard, and happy phoning :-)