Koriscenje kodova na Vas rizik.
Use these codes at your own risk.

*#06#	IMEI number 

Information you get from the IMEI:
XXXXXX  XX  XXXXXX  X
 TAC       FAC    SNR     SP

TAC    Type Approval Code (first 2 digits = country code)
FAC    Final Assembly Code 
SNR    Serial Number
SP        Spare (always SP=0)

*#92702689#  (= *#war0anty#)	Get additional information from your phone
			you can use the so called "warranty code"

Now you are in service menu where you'll find:
1 IMEI (International Mobile Equipment Identification)
2 Made MM/YY (date of production of the phone mm/yy)
3 Purchasing Date (here you can enter the date of purchase. If you enter an incorrect date, you cannot correct it later !
4 Repaired (date of repair, if there was one)
5 Transfer user data?

*#0000#	Phone's software (firmware revision information)

V 4.73 
22-04-98 
NSE-3

1st line: Software version. 
2nd line: The date of the software release. 
3nd line: Phone type. 

Pin-Out
(picture)

1 - VIN CHARGER INPUT VOLTAGE 8.4V 0.8A
2 - CHRG CTRL CHARGER CONTROL PWM 32Khz
3 - XMIC MIC INPUT 60mV - 1V
4 - SGND SIGNAL GROUND
5 - XEAR EAR OUTPUT 80mV - 1V
6 - MBUS 9600 B/S
7 - FBUS_RX 9.6 - 230.4 KB/S
8 - FBUS_TX 9.6 - 230.4 KB/S
9 - L_GND CHARGER / LOGIC GND

Revealing Headphone and Car-Kit Menus

NOTE: If you do these tricks the new menus can not be erased after the procedure.
Not dangerous or harmful for your phone but it got to be said

To enable the headset-function, you have to short-circuit the "3" and "4". After a short time there is "Headset" on the display Now, menu 3-6 is now enabled!
To enable the carkit-function you have to short-circuit the "4" and "5". After a short time, "Car" is shown on the display and the menu 3-7 is enabled!!

If you short-circuit the left and the right contact with the middle contact ("3", "6" and "9") the Nokia Software hangs! The profile "Headset" will be activated. Before you do this, just active the "auto call receive" function in the headphone profile and set the ringing volume to "mute" Now you can use your phone for checking out what people are talking about in a room. Place the phone somewhere under a table in this room and call your phone! The phone receives the call without ringing and you can listen to the words these people are talking about!

Your business card on the display
Change your currency (Menu 2-7-2-1) to your provider-symbol or anything you want (3 letters max.)
Set the phone-cost unit (Menu 2-7-2-1) to 1
Enter the cost-limit (Menu 2-7-1-1) like your phone-number
Change one profile (Menu 3-...-3) to your name

*3370# EFR will be activated after a reboot of the phone
#3370# EFR will be switched off after a reboot of the phone. 

*4720# Half Rate coded will be activated after a reboot of the phone
#4720# Half Rate coded will be de-activated after a reboot of the phone 

If you press the "Power on" button for a short moment, the menu with the profiles is shown on the display. If you press one more time, the mobile turns itself off. You can use the up and down cursor keys to scroll and enable a different alert setting.

*#746025625#   [*#sim0clock#]  to check if the Sim-Clock can be Stopped
(Sim-clock-stop is a kind of standby mode which will save battery time) 

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