We waste money going to service providers to fix our nokia phone, believe me Nokia service providers do not use much to fixing your phone and they are making money doing almost nothing.
Dont
travel 
miles to get your mobile phone unlocked … and dont wait ages to get the unlock code emailed to you . here is some helpful stuff
I believe you are gona love it. Just what I need in return is PRAY (D’ua) for me. If you have such type of codes and/or information, please don’t forget to post here.
FIRMWARE VERSION:
*#0000# *#51×0# *#9999#
VIEW SERIAL NO., DATE MADE, PROGRAMMING DATE, REPAIRED:
*#92772689#
IMEI (INTERNATIONAL MOBILE EQUIPMENT IDENTITY) CODE:
*#06#
ENHANCED FULL RATE (EFR):
*3370# to activate EFR. #3370# to deactivate EFR (Makes calls sound better, but decreases battery life by about 5%.)
HALF RATE MODE (HFR):
*4720# to activate HFR. #4270# to deactivate HFR. (Decreases call quality but increases battery life by about 30%.)
DEFAULT SECURITY CODE:
WARRANTY CODE: (asks warranty code. You can then type a number of codes )
*#92702689# [*#war0anty#]
6232 - Display date of manufacture
7332 - Display date of last repair
7832 - Display purchasing date
9268 - Display serial number
37832 - Set purchasing date to MMYY
87267 - Confirm Transfer, Related to firmware upgrades
#746025625#
Tags: 12345, battery life, code emailed, default security, enhanced full rate, half rate, international mobile equipment, making money, mobile phone, nokia, nokia phone, nokia service, rate mode, security code, serial number, warranty, warranty code