Restore Factory Settings :- To restore factory settings (Memory, language, counters not included) enter *#7780# Manufacturer Information To view Week and Year of manufactureenter *#3283# [*# D A T E #] The last two digits are the year. If the year is 95, the first two digits are the month. For 96 the first two digits are the week of the year. Firmware Version :-To view the firmware version enter *#170602112302# or *#9999# On newer phones, the code has been changed to *#682371158412125#