1 To check the IMEI (International Mobile Equipment Identity) Type-
*#06#
Information you get from the IMEI-
XXXXXX XX XXXXXX X
TAC FAC SNR SP

2 -To check the phones Software revision type-
*#0000#
Information you get from the Software revision-
V 05.31
18-02-99
NSE-3
1ST Line = Software revision
2ND Line = The date of the software release
3RD Line = Phone type
3-To enter the service menu type-
*#92702689# (*#WAR0ANTY#)
(IMEI)
Production date (MM/YY)
Purchase date (MM/YY)
Date of last repair (0000=No repair)

4-To check weather your SIM Card supports clock stopping type-
*#746025625# (*#SIM0CLOCK#)

Revealing the Headphone and Car-Kit menus

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.

5-THE REBOOT TRICK
This should work on all software versions of the 6110.
1. Go to the Calendar (Menu-8)
2. Make a note or reminder.
3. Enter some text into the edit box.
4. Hold “Clear” until the whole text is cleared, then press “Back”.
5. Press “0″. The main screen will now be showing but a space appears on the screen. (you can’t see it)
6. Enter 4 digits (e.g. 1234).
7. Use the down arrow to move the cursor to the left side of the numbers and the space (Down arrow twice).
8. Now enter 6 digits and press the call button.

Wait for a few seconds,

6-EFR CALL QUALITY
To activate EFR (Enhanced Full Rate) Enter the code-
*3370#

To deactivate it, Enter the code-
#3370#

7-CHECK SIM-LOCK

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
8-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 4
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.

9-SIM-LOCK CHECKS
#PW+1234567890+1# = GIVES PROVIDER-LOCK STATUS
#PW+1234567890+2# = GIVES NETWORK-LOCK STATUS
#PW+1234567890+3# = GIVES COUNTRY-LOCK STATUS
#PW+1234567890+4# = GIVES SIM-CARD-LOCK STATUS.