*#06# for checking the IMEI 

XXXXXX  XX  XXXXXX  X

    TAC      FAC     SNR      SP

TAC = Type approval code
FAC = Final assembly code
SNR = Serial number
SP = Spare

*#0000# To  Software Version.

*#746025625# [*#sim0clock#].

*#92702689# [*#war0anty#] takes you to a secret menu with 6 choices:

1. Displays Serial Number.
2. Displays the Month and Year of Manufacture (0997)
3. Displays (if there) the date where the phone was purchased (MMYY)
4. Displays the date of the last repairment - if found (0000)
5. makes you capebel of transferring user data if you have the gear for it
6. shows how many hours the phone has been on

Latest software version: V 5.31 NSE - 8/9 (24-05-00)

V 5.26 NSE - 8/9 (07-04-00)
V 5.02 NSE - 8/9
V 4.41 NSE - 8/9 (17-08-99)0
V 4.11 (???)
V 3.10 NSE - 8

*3370# - Enhanced Full Rate Codec (EFR) activation. It will automatically restart.
#3370# - Enhanced Full Rate Codec (EFR) deactivation. It will automatically restart.
*3370# - Half Rate Codec activation. It will automatically restart
#3370# - Half Rate Codec deactivation. It will automatically restart
xx#        -  xx position in Phone Book

*#06# for checking the IMEI 

XXXXXX  XX  XXXXXX  X

    TAC      FAC     SNR      SP

TAC = Type approval code
FAC = Final assembly code
SNR = Serial number
SP = Spare

*#0000#  Software Version.

*#746025625# [*#sim0clock#]
Checks if the sim clock can be stopped. Sim clock stop is a kind of stand-by mode which will save battery time. This code doesn't work with software version 4.59.

*#92702689# [*#war0anty#]
You don't need the warranty-codes any more - you can just scroll through the information like in any other menu. It has the the same data as 81xx and 31xx phones (with "Edit" button for purchase date, and "User data transfer").

Menu:
1: Displays Serial Number.
2: Displays the Month and Year of Manufacture (0997)
3: Displays (if there) the date where the phone was purchased (MMYY) you can here set the Purchasing Date (Warning: You can only do this once - so be careful what you write...)
4: Displays the date of the last repairment - if found (0000)
6: Does anyone know if this is for upgrading the phone's EEPROM?? (Transfer user data?)

Enhanced Full Rate Codec (EFR):
On: Enter *3370# and EFR will be activated after a reboot of the phone ( consumes more power )
Off: Enter #3370# and EFR will be switched off after a reboot of the phone.

Half Rate Codec:
On: Enter *4720# and Half Rate coded will be activated after a reboot of the phone ( better standby time )
Off: Enter #4720# and Half Rate coded will be de-activated after a reboot of the phone

1.Check your software version. You can only continue if you have v4.33, v4.73 or v5.24.
2.Take apart the phone.
3. De-solder the EEPROM (ATMEL AT 24C64).
4. Read out the data with an EEPROM programmer and save it to a file (Backup).
5. If you have v.33 or v4.73, change the address "03B8" from "00" to "FF".
6. If you have v5.24 then change the address "0378" from "00" to "FF".
7. Write the new data to the EEPROM and solder it back to the phone.
8. Power on your phone and you should have "Netmonitor" enabled.

The main code used in Nokia phones is:
#pw+(master code)+Y#
This code is able to check, activate or remove Sim card restriction (SP-lock).
Use the * key to get the p, + and w chars.
'Y' has to be 1,2,3 or 4 - depending of what lock you what to deal with.

#pw+1234567890+1# for Provider-Lock status
#pw+1234567890+2# for Network-Lock status
#pw+1234567890+3# for Country-Lock status
#pw+1234567890+4# for SimCard-Lock status

# = DOUBLE-CROSS
W = PRESS "*" THREE TIMES
P = PRESS "*" FOUR TIMES
+ = PRESS "*" TWO TIMES
MASTERCODE = 1234567890
Y = NUMBER 1 TO 4

Eg. To remove restriction on lock 1 type following code:
#pw+(master code)+1#
If you just want to check your phone use 10 random numbers Eg. 1234567890 as the (master code)
eg. To check if phone if restricted on lock 1 type the following code:
#pw+1234567890+1#

Bypass the SP lock
With a Nokia 16xx/21xx/31xx/51xx/81xx that are SIMlocked to one privider you can bypass the SP lock like this:
1: Insert sim card of diferent provider.
2: Turn on the phone and press the UP VOLUME key for 3 sec. then release it and the phone says PIN CODE?
3: Press the "C" key.
4: Then Press * and wait until it desapear and apear again, then press * one more time and 04*PIN*PIN*PIN#

The phone now says: PIN CODE CHANGED (or ACCEPTED) and the SIM card is accepted until you restart the phone again. NOTE: On version 5.04 Nokia has removed this option !

Your number in your display
1. Goto menu 3-7 Call cost settings.
2. Turn ON the Call costs' limit 3-7-1. PIN2 code Required.
3. Put in the limit with the phone number. eg. my phone # is 019 2184697 Enter the limit as 2184697
4. Goto menu 3-7-2 Show costs in. PIN2 code Required.
5. Select Currency.
6. Enter Unit price : 1
7. Enter Currency name as 019 (per my phone # eg. above)
Now the phone number 019 2184697 will remains on the 4th row of the display. Secondly, if you press the # key, it prompt which line to be used; Line 1 or 2.

Larger Number Tip (works in 51xx series)
If you hold the key # while you are in the names list, the telephone number can be viewed larger. 

To view Software Version enter *#9999#

*#92772689# for checking ISDN number.
1) Serial No.
2) Made
3) Programming date
4) Repaired
5) Transfer user data ?
6) Life Timer

*3001#12345# for field test mode and nam selection and some other stuff...
1) NAM 1
    a. Home System ID
    b. Own Number
    c. Alpha Tag
    d. PSID/RSID lists
    e. Change Defaults
2) NAM 2
    a. Home System ID
    b. Own Number
    c. Alpha Tag
    d. PSID/RSID lists
    e. Change Defaults
3) Security a. Displays security code
4) Emergency
    a. Emergency number 1
    b. Emergency number 2
    c. Emergency number 3
5) SW Version a. Displays sw version
6) Serial No. a. Displays ESN
7) Programmed
8) Field Test

*#639# to change NAM.

*#06# for checking the IMEI (International Mobile Equipment Identity) Information you get from the IMEI:

XXXXXX  XX  XXXXXX  X

    TAC      FAC     SNR      SP

TAC = Type approval code
FAC = Final assembly code
SNR = Serial number
SP = Spare

*#0000# To view Software Version.
*#6110# Try this code if the above code doen't work.

*#746025625# [*#sim0clock#]
Checks if the sim clock can be stopped. Sim clock stop is a kind of stand-by mode which will save battery time. This code doesn't work with software version 4.59.

*#92702689# [*#war0anty#]
You don't need the warranty-codes any more - you can just scroll through the information like in any other menu. It has the the same data as 81xx and 31xx phones (with "Edit" button for purchase date, and "User data transfer").

Menu:
1: Displays Serial Number.
2: Displays the Month and Year of Manufacture (0997)
3: Displays (if there) the date where the phone was purchased (MMYY) you can here set the Purchasing Date (Warning: You can only do this once - so be careful what you write...)
4: Displays the date of the last repairment - if found (0000)
6: The option is for transferring ALL the telephone data (from the memory) to a "box" so that the technician can fiddle with the phone without worrying about the data stored on it. Stuff stored on the SIM is not transferred, but who delivers their phone with the SIM? :)

Enhanced Full Rate Codec (EFR):
On: Enter *3370# and EFR will be activated after a reboot of the phone ( consumes more power )
Off: Enter #3370# and EFR will be switched off after a reboot of the phone.

Half Rate Codec:
On: Enter *4720# and Half Rate coded will be activated after a reboot of the phone ( better standby time )
Off: Enter #4720# and Half Rate coded will be de-activated after a reboot of the phone

1.Check your software version. You can only continue if you have v4.33, v4.73 or v5.24.
2.Take apart the phone.
3. De-solder the EEPROM (ATMEL AT 24C64).
4. Read out the data with an EEPROM programmer and save it to a file (Backup).
5. If you have v.33 or v4.73, change the address "03B8" from "00" to "FF".
6. If you have v5.24 then change the address "0378" from "00" to "FF".
7. Write the new data to the EEPROM and solder it back to the phone.
8. Power on your phone and you should have "Netmonitor" enabled.

The main code used in Nokia phones is:
#pw+(master code)+Y#
This code is able to check, activate or remove Sim card restriction (SP-lock).
Use the * key to get the p, + and w chars.
'Y' has to be 1,2,3 or 4 - depending of what lock you what to deal with.

#pw+1234567890+1# for Provider-Lock status
#pw+1234567890+2# for Network-Lock status
#pw+1234567890+3# for Country-Lock status
#pw+1234567890+4# for SimCard-Lock status

# = DOUBLE-CROSS
W = PRESS "*" THREE TIMES
P = PRESS "*" FOUR TIMES
+ = PRESS "*" TWO TIMES
MASTERCODE = 1234567890
Y = NUMBER 1 TO 4

(master code) is a 10 digit code, based on the phones IMEI number.
(I can NOT give you the master code - SO DON'T ASK ME FOR IT !!!!!!!)

Eg. To remove restriction on lock 1 type following code:
#pw+(master code)+1#
If you just want to check your phone use 10 random numbers Eg. 1234567890 as the (master code)
eg. To check if phone if restricted on lock 1 type the following code:
#pw+1234567890+1#

*#0000# Software Version.

*#746025625# [*#sim0clock#]
Checks if the sim clock can be stopped. Sim clock stop is a kind of stand-by mode which will save battery time. This code doesn't work with software version 4.59.

*#92702689# [*#war0anty#]
You don't need the warranty-codes any more - you can just scroll through the information like in any other menu. It has the the same data as 81xx and 31xx phones (with "Edit" button for purchase date, and "User data transfer").

Menu:
1: Displays Serial Number.
2: Displays the Month and Year of Manufacture (0997)
3: Displays (if there) the date where the phone was purchased (MMYY) you can here set the Purchasing Date (Warning: You can only do this once - so be careful what you write...)
4: Displays the date of the last repairment - if found (0000)
6: Does anyone know if this is for upgrading the phone's EEPROM?? (Transfer user data?)

First line:
The Software Version (My guess is that this software has been used in previously Nokia-phones, what do you say?!).

Second line:
The date of the SW release.

Third line:
NHE-8 has something to do with the type of phone you are dealing with. Is it GSM 900 (standard), GSM 1800 (DCS1800) or GSM 1900 (PCS1900)? Nokia 2110, 3110, 8110(i) are all NHE types. The only thing that vary is the code after NHE- ("8"). NHE = GSM 900, NHK =GSM 1800 - The number in the end = the model (2110i = 4 etc.) The 5110 and 6110 is called NSE-1 and NSE-3...this may be because it supports EFR (?)

The main code used in Nokia phones is:
#pw+(master code)+Y#
This code is able to check, activate or remove Sim card restriction (SP-lock).
Use the * key to get the p, + and w chars.
'Y' has to be 1,2,3 or 4 - depending of what lock you what to deal with.

#pw+1234567890+1# for Provider-Lock status
#pw+1234567890+2# for Network-Lock status
#pw+1234567890+3# for Country-Lock status
#pw+1234567890+4# for SimCard-Lock status

# = DOUBLE-CROSS
W = PRESS "*" THREE TIMES
P = PRESS "*" FOUR TIMES
+ = PRESS "*" TWO TIMES
MASTERCODE = 1234567890
Y = NUMBER 1 TO 4

(master code) is a 10 digit code, based on the phones IMEI number.
(I can NOT give you the master code - SO DON'T ASK ME FOR IT !!!!!!!)

Eg. To remove restriction on lock 1 type following code:
#pw+(master code)+1#
If you just want to check your phone use 10 random numbers Eg. 1234567890 as the (master code)
eg. To check if phone if restricted on lock 1 type the following code:
#pw+1234567890+1#

Enhanced Full Rate Codec (EFR):
On: Enter *3370# and EFR will be activated after a reboot of the phone ( consumes more power )
Off: Enter #3370# and EFR will be switched off after a reboot of the phone.

Half Rate Codec:
This function is NOT available on 8810

The 54# Tip:
Type 1#, 2#........54# on the keypad (when you're not in the menu) to get the phone number used for with thiskey when speed dialing.