6110

*#06# to check the IMEI (International Mobile Equipment Identity)

*#0000# shows the software version

*#3370# - Enchanced full Rate Codec (EFR) activation.It will automatically restart.
*#3370# - Enchanced full Rate Codec (EFR) deactivation
*#4720# - Half Rate Codec activation.It will automatically restart.
*#4720# - Half Rate Codec deactivation

Enchanced Full Ratewill give you much better sound quality when you enable it. The new Enhanced Full Rate CODEC adopted by GSM uses the ASELP (AlgebraicCode Excitation Linear Prediction) compression technology. This technology allows for much great voice quality in the same number of bits as the older Full Rate CODEC. The older technology was called LPC-RPE (Linear Prediction Coding with Regular Pulse Excitation). Both operate at 13 kilobits.(but you take up more space on the network, so they can charge you more) - Talk-time is reduced with about 5%

*#746025625# Simclock

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# 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 capable of transferring user data if you have the gear for it
6. shows how many hours the phone has been on

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.
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 Network Monitor gives you the following information.
Carrier number
MS RX Level in DBM
Received signal quality
MS TX power level C1 (Path loss criterion, used for cell selection and reselection). The range is -99 to 99.
RTL (Radio link timeout).
Timeslot
Indication of the transmitter status
Information on the Network parameters.
TMSI (Temporary Mobile Subscriber Identity).
Cell identification (Cell ID, Number of cells being used).
MCC (Mobile country code)
MCN (Mobile network code)
LAC (Location area code)
Ciphering (On/Off)
Hopping (On/Off)
DTX (On/Off)

Discard cell barred information.
The Reboot Trick
Should work on all software versions.
1. Go to calendar (menu - 8)
2. Make note / reminder
3. Enter some text into the edit box
4. Hold clear until whole text is cleared, then press Back
5. Press 0. Main screen is shown but a space appears on the screen. You can't see it of course.
6. Enter 4 digits (1234, for example)
7. Use the down arrow to move the cursor to the left side of the numbers and the space (2 times down arrow)
8. Now enter 6 digits and press the green "Call button".

Wait some seconds...the phone will now flash the background light and finally reboot. The trick should also work on other menus like the profile menu...

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.

Service Prover Lock
The service provider (SP) lock is used to lock the cell phone to the SP's SIM card. Once the cell phone is locked to a specific operator, if one inserts a SIM card from a different operator the phone will refuse to accept it! The cell phone will however accept another SIM card from the same operator.

All Nokia phones (2110 and newer) have four different SIM locks which can be used to lock the phone for upto 4 different providers. But most phones with restriction only have one lock activated. ( lock 1)

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#
Please NOTE that these codes could be used with care! A user told me that it's only possible to type in about 3 different codes on each lock! Then something bad will happen ..therefore be careful!

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.

General tips

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.

Power Button Tip:
If you press the 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.
Crazy 5110
Send a SMS full of . (dots) the it'll go crazy when you scroll the received message in your 5110. It doesn't do any permanent damage...it only goes crazy if you scroll the SMS. I'm not sure if it works with all of the software version but it works with 4.59. Doesn't work on SW version 4.53 ..

Revealing the Headphone and Car-Kit menus
Please note that if you do these next tricks, the new menus can't be erased without restoring 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 your charger.