Secret Code for Nokia

* *#06# : check IMEI (International Mobile Equipment Identity).

* *#7780# : reset to factory setting

* *#67705646# : cleaning LCD.

* *#0000# : software version.

* *#2820# : Bluetooth address.

* *#746025625# Sim clock allowed status.

* *#62209526# : MAC address from WLAN adapter

* #pw+1234567890+1# : forwarding call status

*#92702689# : Serial Number, date and year made, last repair date
*#3370# : Enhanced Full Rate Codec (EFR) activation (enhancing signal)

*#3370* : (EFR) deactivation

*#4720# : Half Rate Codec activation.

*#4720* : Half Rate Codec deactivation.

*#7370925538# reset wallet code for Nokia S60 (12345)
*#3925538# : deleting wallet contents

*#7328748263373738# : reset phone security code to default (12345)

to unlock service provider : 
insert sim, switch on phone then press volume button for 3 seconds, enter PIN, press C, then press *, press * again and 04*PIN*PIN*PIN#

"curiosity is motivation"
"letz share coz i only ask for information"