Codes for Nokia 3100 mobile | Nokia 3100 mobile phone users can make use of following codes
View Serial No:
*#92772689#
Firmware Version:
*#0000#
*#51x0# or
*#9999#
IMEI Code:
*#06#
Default Security Code:
12345
Half Rate Mode (HFR):
*4720# to activate HFR.
#4270# to deactivate HFR.
Enhanced Full Rate (EFR):
*3370# to activate EFR.
#3370# to deactivate EFR