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 !

Fast silent mode
In the newer versions (v.7.11 or higher) a quick silent mode can by entered. Press Menu then #.

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 this key when speed dialing.


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 P35.

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.

COUNTRY-LOCK

NETWORK-LOCK

PROVIDER-LOCK

SIMCARD-LOCK

The code to read out the sim-lock status of your phone is



#PW+(MASTERCODE)+(Y)#

# = DOUBLE-CROSS

W = PRESS "*" THREE TIMES

P = PRESS "*" FOUR TIMES

+ = PRESS "*" TWO TIMES

MASTERCODE = 1234567890

Y = NUMBER 1 TO 10

THE JAMES BOND TRICK

If you short-circuit theleft middle and right pins on the bottom of the phone with all connections touching each other, the Nokia software hangs! The profile "Headset" will be activated. Before you do this just activate the "Automatic Answer" in the headset 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. Just place it under a table in a room and call it. The phone receives the call without ringing and you can listen to what people are saying.
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Clock Stopping

To check weather your SIM Card supports clock stopping type-

*#746025625# (*#SIM0CLOCK#)
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To enter the service menu type-

*#92702689# (*#WAR0ANTY#)

Serial number (IMEI)

Production date (MM/YY)

Purchase date (MM/YY) You can only enter the date once.

Date of last repair (0000=No repair)