UNIVERSAL CODES

Most of them will work and are updates according to best of my knowledge..Enjoy the extensive collection of Secret mobile Phone Codes

UNIVERSAL GSM CODES

Cancel all redirections: ##002#

*43# to activate call waiting, to deactivate #43#.
If your phone doesn't have incoming call barring and outgoing call barring, you can try this.
For outgoing call barring dial *33*barcode*# and pres OK. To deactivate it dial #33#barcode*#.
On any phone on any network type in **43# to enable conference calls. You can make up to 7 calls at once
If you need to block SMS reception (if you are spammed by someone) just press this code:
*35*xxxx*16#
xxxx is your Call Barring code (default is 0000).
To remove this barring type: #35*xxxx#
If you want to hide/show your phone number when calling, put one of these codes below in front of the number that you are going to call.
(*#30# / *#31# or *31# / #31# ) Works on some networks.
Typing *0# or *nm# on the beginning of a txt message gives you detailed delivery report on some networks.. But turn off reports in message settings before.
When the sim card-pin blocked type **042*pin2 old*newpin2*newpin2*
Airtel Secret Codes
Dial *123# to see your credit balance. Dial *110# and follow the options.
Dial *109*9898631902# to display the call cost after each call.
If you are in Indiausing IDEA Pre or Postpaid connection then dial *101# you will get a secret menu that will let you to activate or deactivate any supported Idea package for your mobile.
Software version: *#9999#
IMEI number: *#06#
Serial number: *#0001#

1. Battery status- Memory capacity : *#9998*246#

1. Debug screen: *#9998*324# - *#8999*324#

1. LCD kontrast: *#9998*523#

1. Vibration test: *#9998*842# - *#8999*842#

1. Alarm beeper - Ringtone test : *#9998*289# - *#8999*289#

1. Smiley: *#9125#

1. Software version: *#0837#

1. Display contrast: *#0523# - *#8999*523#

1. Battery info: *#0228# or *#8999*228#

1. Display storage capacity: *#8999*636#

1. Display SIM card information: *#8999*778#

1. Show date and alarm clock: *#8999*782#

1. The display during warning: *#8999*786#

1. Samsung hardware version: *#8999*837#

1. Show network information: *#8999*638#

1. Display received channel number and received intensity: *#8999*9266#

*#1111# S/W Version
*#1234# Firmware Version
*#2222# H/W Version
*#8999*8376263# All Versions Together
*#8999*8378# Test Menu
*#4777*8665# GPSR Tool
*#8999*523# LCD Brightness
*#8999*377# Error LOG Menu
*#8999*327# EEP Menu
*#8999*667# Debug Mode
*#92782# PhoneModel (Wap)
#*5737425# JAVA Mode
*#2255# Call List
*#232337# Bluetooth MAC Adress
*#5282837# Java Version

Type in *#0000# on a Samsung A300 to reset the language
Master reset(unlock) #*7337# (for the new samsungs E700 x600 but not E710)
Samsung E700 type *#2255# to show secret call log (not tested)
Samsung A300, A800 phone unlock enter this *2767*637#
Samsung V200, S100, S300 phone unlock : *2767*782257378#

Nokia Secret Codes
On the main screen type in:

*#06# for checking the IMEI (International Mobile Equipment Identity).
*#7780# reset to factory settings.
*#67705646# This will clear the LCD display(operator logo).
*#0000# To view software version.
*#2820# Bluetooth device address.
*#746025625# Sim clock allowed status.
#pw+1234567890+1# Shows if sim have restrictions.
*#92702689# - takes you to a secret menu where you may find some of the information below:

1. Displays Serial Number.
2. Displays the Month and Year of Manufacture
3. Displays (if there) the date where the phone was purchased (MMYY)
4. Displays the date of the last repair - if found (0000)
5. Shows life timer of phone (time passes since last start)

*#3370# - Enhanced Full Rate Codec (EFR) activation. Increase signal strength, better signal reception. It also help if u want to use GPRS and the service is not responding or too slow. Phone battery will drain faste