Firmware Version:
*#0000#
*#51x0# or
*#9999#

View Serial No:
*#92772689#

Warranty: press *#92702689#, and you will see:

1 IMEI
2 Made MM/YY (manufacture date)
3 date of purchase (this can be edited, but once it is set, it cannot be altered anymore).
4 Repaired (date of repair, in case it has been repaired)
5 Transfer user data

Enhanced Full Rate (EFR):
*3370# to activate EFR.
#3370# to deactivate EFR

Half Rate Mode (HFR):
*4720# to activate HFR.
#4270# to deactivate HFR.

Default Security Code:
12345

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