Nokia secret codes

EFR (Enhanced Full Rate) Codec: 

*3370# 


Deactivate EFR: 

#3370# 


Half Rate Codec: 

*#4720# 


Deactivate HRC: 

*#4720# 


Software Ver.: 

*0000# or *9999# 


EMEI No.: 

*#06#

Provider Lock Status: 

#pw 1234567890 1# 


Network Lock Status: 

#pw 1234567890 2# 


Country Lock Status: 

#pw 1234567890 3# 


SIM Card Lock Status: 

#pw 1234567890 4# 


phone security code in use: 

*#2640# 


private number: 

*#30#

Check Call Waiting Status: 

*#43# 


Removing OP LOGO:(For 3310&
330) 

*#67705646# 


Reset Timer& Game Score:

*#73# 


SIM Clock Status: 

*#746025625# 


Manufacture Code: 

*#7760# 


Restore factory settings: 

*#7780#


1.Serial Number

2.Date Made

3.Purchase Date

4.Date of last repair

(0000 for no repairs)

5.Transfer User Data:

*#92702689# 


Default Security Code: 

12345 


press and hold #

Lets you switch

between lines