Here under secret code to you be found How to overview your phone's imei no., firmware versions & How to mobile Reset factory settings & more. Note: these codes should activate automatically after the last character input * (aka NO WARNING. *#0*# - testing mode *#06# - view IMEI number *#0011# - service mode signal status *#1234# - display phones current firmware *#*#4636#*#* - battery and other general settings like GSM/CDMA *#*#7594#*#* - change the "Power" button action in your phone. *#*#7780#*#* - Factory data soft reset *#*#8255#*#* - Gtalk service monitor *#*#273283*255*663282*#*#* - Opens a File copy screen where you can backup your media files *#*#1472365#*#* - GPS test *#*#197328640#*#* - service mode main menu *2767*3855# - Factory Hard Reset to ROM firmware default settings *2767*2878# - leave Factory