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Nokia Tips & Tricks (Codes)
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Check the IMEI (International Mobile Equipment Identity)
Type *#06#
Information you get from the IMEI-
XXXXXX XX XXXXXX X
TAC FAC SNR SP
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TAC = Type approval code
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FAC = Final assembly code
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SNR = Serial number
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SP = Spare
EFR CALL QUALITY
To activate EFR (Enhanced Full Rate) Enter the code- *3370#
This improves call quality but decreases batterylife by about 5%
To deactivate it, Enter the code- #3370#
To check the phones Software revision
Type *#0000#
Information you get from the Software revision-
V 05.31
18-02-99
NSE-3
NETWORK MONITOR
There is a hidden menu inside your Nokia phone. If you want to activate it, you'll have to re-program some chips inside of your phone.
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Check your software version. You can only continue if you have v4.33, v4.73 or v5.24.
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Take apart the phone.
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De-solder the EEPROM (ATMEL AT 24C64).
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Read out the data with an EEPROM programmer and save it to a file (Backup).
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If you have v.33 or v4.73, change the address "03B8" from "00" to "FF".
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If you have v5.24 then change the address "0378" from "00" to "FF".
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Write the new data to the EEPROM and solder it back to the phone,
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Power on your phone and you should have "Netmonitor" enabled.
The Network Monitor gives you the following information.
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Carrier number
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MS RX Level in DBM
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Received signal quality
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MS TX power level
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C1 (Path loss criterion, used for cell selection and reselection). The range is -99 to 99.
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RTL (Radio link timeout).
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Timeslot
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Indication of the transmitter status
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Information on the Network parameters.
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TMSI (Temporary Mobile Subscriber Identity).
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Cell identification (Cell ID, Number of cells being used).
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MCC (Mobile country code)
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MCN (Mobile network code)
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LAC (Location area code)
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Ciphering (On/Off)
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Hopping (On/Off)
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DTX (On/Off)
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Discard cell barred information
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Enter the service menu
Type *#92702689# (*#WAR0ANTY#)
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Serial number (IMEI)
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Production date (MM/YY)
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Purchase date (MM/YY) You can only enter the date once.
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Date of last repair (0000=No repair)
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Transfer user data to another Nokia phone via Infra-Red
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CHECK SIM-LOCK
Note - If you bought your Nokia on UK Vodafone or UK Cellnet you do not need to check this because they both transmit on GSM900, and they don't lock the phones. However if you bought your phone on UK Orange or UK One2one your phone may be blocked. The reason is that they both transmitt on GSM1800. To make a call on GSM1800 you need what is known as a "Dual band" phone. A dual band phone is able to transmit on both GSM900 and GSM1800, so they lock the phones so you can't use it with any other network simcard. If you find that your phone is locked you can try different software to unlock it. (we havn't found one that works yet), or you can ask your service provider who will gladly exchange the 10 digit code for about £35.
This is how to check the status of the 4 different locks. Aslo don't try entering the wrong number, because after 3 times it will block the phone for good.
There are 4 different locks on your Nokia phone.
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COUNTRY-LOCK
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NETWORK-LOCK
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PROVIDER-LOCK
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SIMCARD-LOCK
The code to read out the sim-lock status of your phone is
#PW+(MASTERCODE)+(Y)#
The master code is a secret code. The code has 10 digits, To read out the sim-lock status you can enter every combination you want!
"Y" Shows the status of the network-lock. Here you can enter a number from "1" to "4". The "4" is for the sim-card lock.
Revealing the Headphone and Car-Kit menus
Please note that if you do these next tricks, the new menus can't be erased without retoring the factory default settings. To do these tricks you need to short-circuit the pins on the bottom of the phone next to where you plug in you charger.
1. To activate the "Headset" menu, you need to short-circuit pins "3" and "4". After a short time the word "Headset" will be shown in the display. Menu 3-6 is now enabled.
2. To activate the "Car" menu, you need to short-circuit pins "4" and "5". After a short time the word "Car" will be shown in the display. Menu 3-7 is now enabled.
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