C E L L   S E C R E T S

NOKIA  HANDSETS:

Firmware version:

*#0000#  or

*#51x0#  or

*#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. Makes calls sound better, but decreases battery life by about 5%.

#3370# to deactivate EFR

 Half Rate Mode (HFR):

*4720# to activate HFR. Decreases call quality but increases battery life by about 30%.

#4270# to deactivate HFR.

 Default Security Code:

12345

Additional Info.:

All Nokia phones have four different SIM locks which can be used to lock the phone for up to 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

# = HASH
FOR :  W = PRESS "*" THREE TIMES
             P = PRESS "*" FOUR TIMES
             + = PRESS "*" TWO TIMES
             MASTERCODE = 1234567890
             Y = NUMBER 1 TO 4.

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