Most essential code of mobile phone

IMEI number: *#06#
Software version: *#0000# & *#9999#
1st line: Software version
2nd line: Software release date
3rd line: Compression type
Software version of 8110: *#8110#
For full format:*7370#
For full format in symbian 7 or higher: Press call key+3+* at
same time then switch on the phone
For half format/reset to factory settings:
Clear the operator logo:- *67705646# (for 3310 & 3330)
Bluetooth device address:- *#2820#
Mac address:- *#62209526#
Menu:*#92702689#
Active EFR:*#3370#
Deactivate EFR:*#3370*
Active HRC: *#4720#
Deactivate HRC: *#4720*
Wallet code: *#7370925538#
Delete contents: *#3925538#
Reset security code: *#7328748263373738#
Vodafone last call: *#147# & *#1471#
Display code: *2640#
See private number: *#30#
Unlock service provider: Turn on phone + Vol. up(3s) + (c) + (*) + *04*pin*pin*pin#
Closed caller group: 00000 & set 500
Deactivate the PWM-MEM: *#94870345123456789#
Provider lock status: #PW+1234567890+1#
Network lock status: #PW+1234567890+2#
Country lock status: #PW+1234567890+3#
Sim card lock status: #PW+1234567890+4#
Sim clock status: *#746025625# (s60/s80/s90)(works in 43 min)
Call waiting status: *#43#
Status of all calls diverts: *#21#
No reply diverts status: *#61#
Unreachable diverts status: *#62#
Busy calls diverts status: *#67#
Active all calls: **21*number#
Active no reply: **61*number#
On busy Active: **67*number#
Reset phone timers: *#73#
Manufactures code: *#7760#
Default code: 12345
Switch between lines: Hold #