*#06# -for check yr phone IMEI code
*#0000# or *#9999# - for check yr fireware version
*#92702689# -for check yr phone life time
*#2820# -for check yr bluetooth mac address
*#3370# -to restart yr phone
*#7370# -to format drive C:
*#7780# -to make soft reset or restore file
*#62209526# -to check yr address WLAN for phone that have wifi
enjoy it!!!