What are GSM Codes?

The GSM standard allows most of the functions to be controlled by entering codes into the keypad of a mobile phone: you can set diverts and the like, accept or reject calls, or even change your PIN code by typing at the keypad.

Unfortunately, not all the codes listed here are enabled by every network. If a code isn't supported, it simply won't work: you won't break anything by trying to use it!

Why bother?
Many (though not all) handsets offer menus to do most of these things, but they vary from handset model to model, and are sometimes hidden by networks who don't want to confuse their users.

If you can use the codes directly, you can also store them in memory, so that you can easily recall and reuse them. For example, you might want to divert all calls to your office phone on a regular basis: from memory, it's just two or three keypresses to set up or cancel such a diversion.

Types of call
You know about voice calls, but there are also fax calls, data calls, ALS (line two) calls and SMS messages. Calls of different types can all have different settings associated, using the relevant "bearer code" as shown in the examples below.

The snags
Some networks don't support all services, so some GSM codes will fail. Others sometimes seem to use their own interpretation of the GSM codes.

If you are having trouble setting call diversion, try ##002#[SEND] and/or ##004#[SEND] to clear all existing diverts first. You probably have to cancel a 'no reply' diversion before you can set another with a different timeout.

Call Divert (all call types)
All
Set: **21*destination#[SEND]
Cancel: ##21#[SEND]
Query: *#21#[SEND]
No Answer
Delay nn seconds: max 30 seconds, in 5 second increments
Set: **61*destination*nn#[SEND]
Cancel: ##61#[SEND]
Query: *#61#[SEND]
Unreachable
Set: **62*destination#[SEND]
Cancel: #62#[SEND]
Query: *#62#[SEND]
Busy
Set: **67*destination#[SEND]
Cancel: ##67#[SEND]
Query: *#67#[SEND]
Cancel All
##002#[SEND]

Divert Voice Calls
All
Set: **21*destination*11#[SEND]
Cancel: ##21*11#[SEND]
Query: *#21*11#[SEND]
No Answer
Delay nn seconds: max 30 seconds, in 5 second increments
Set: **61*destination*11*nn#[SEND]
Cancel: ##61*11#[SEND]
Query: *#61*11#[SEND]
Unreachable
Set: **62*destination*11#[SEND]
Cancel: ##62*11#[SEND]
Query: *#62*11#[SEND]
Busy
Set: **67*destination*11#[SEND]
Cancel: ##67*11#[SEND]
Query: *#67*11#[SEND]

Divert Data Calls
All
Set: **21*destination*25#[SEND]
Cancel: ##21*25 [SEND]
Query: *#21*25#[SEND]
No Answer
Delay nn seconds: max 30 seconds, in 5 second increments
Set: **61*destination*25*nn#[SEND]
Cancel: ##61*25#[SEND]
Query: *#61*25#[SEND]
Unreachable
Set: **62*destination*25#[SEND]
Cancel: ##62*25#[SEND]
Query: *#62*25#[SEND]
Busy
Set: **67*destination*25#[SEND]
Cancel: ##67*25#[SEND]
Query: *#67*25#[SEND]

Divert Fax Calls
All
Set: **21*destination*13#[SEND]
Cancel: ##21*13#[SEND]
Query: *#21*13#[SEND]
No Answer
Delay nn seconds: max 30 seconds, in 5 second increments
Set: **61*destination*13*nn#[SEND]
Cancel: #61*13#[SEND]
Query: *#61*13#[SEND]
Unreachable
Set: **62*destination*13#[SEND]
Cancel: #62*13#[SEND]
Query: *#62*13#[SEND]
Busy
Set: **67*destination*13#[SEND]
Cancel: ##67*13#[SEND]
Query: *#67*13#[SEND]

Divert Line 2 Calls
All
Set: **21*destination*89#[SEND]
Cancel: #21*89#[SEND]
Query: *#21*89#[SEND]
No Answer
Delay nn seconds: max 30 seconds, in 5 second increments
Set: **61*destination*89*nn#[SEND]
Cancel: ##61*89#[SEND]
Query: *#61*89#[SEND]
Unreachable
Set: **62*destination*89#[SEND]
Cancel: ##62*89#[SEND]
Query: *#62*89#[SEND]
Busy
Set: **67*destination*89#[SEND]
Cancel: ##67*89#[SEND]
Query: *#67*89#[SEND]

Call Barring

You use call barring to control what calls can be made or received by your account.

The barring code is specific to the network. Ask your service provider.

Note that Call Barring can't work if call diverts are active, even the autodivert set by the network.

All calls
Set: **330*barring code#[SEND]
Cancel: ##330*barring code#[SEND]
Query: *#330#[SEND]

Outgoing calls
Set: **333*barring code#[SEND]
Cancel: ##333*barring code#[SEND]
Query: *#333#[SEND]

Incoming calls
Set: **35*barring code#[SEND]
Cancel: ##35*barring code#[SEND]
Query: *#35#[SEND]

Outgoing international calls
Set: **331*barring code#[SEND]
Cancel: ##331*barring code#[SEND]
Query: *#331#[SEND]

Outgoing international calls except to home country
Set: **332*barring code#[SEND]
Cancel: ##332*barring code#[SEND]
Query: *#332#[SEND]

Incoming calls when outside home country
Set: *351*barring code#[SEND]
Cancel: #351*barring code#[SEND]
Query: *#351#[SEND]
Cancel All Call Barring
#330*barring code#[SEND]

SMS
There is no provision in the GSM specification for diverting SMS messages

Bar incoming SMS messages
Set: *35*barring code*16#[SEND]
Cancel: #35*barring code*16#[SEND]

Call waiting
Set: *43#[SEND]
Cancel: #43#[SEND]
Query: *#43#[SEND]

Incoming call waiting
Reject: 0 [SEND]
Drop current call and answer: 1 [SEND]
Hold current call and answer: 2 [SEND]

Calling line identity
Outgoing CLI Release (recipient sees your number)
Release: *31# destination [SEND]
Withhold: #31# destination [SEND]
Query default: *#31#[SEND]

Incoming CLI Presentation (you see the caller's number)
Allow: *30#[SEND]
Prevent: #30#[SEND]
Query default: *#30#[SEND]

Dial number from memory
Where nnn is the memory location number
nnn#[SEND]

Change PIN codes
Change Call Barring pin code
**03*oldpin*newpin*newpin#

Change SIM pin code
**04*oldpin*newpin*newpin#

Change SIM pin2 code
**042*oldpin*newpin*newpin#

Unblock SIM pin code
**05*PUK*newpin*newpin#

Unblock SIM pin code
**06*PUK2*newpin*newpin#

Technical user guide

This is where the "fancy bits" are explained: you don't necessarily need to read or know everything here, but many of the features offered by your mobile phone or network are well worth using, as long as you know how to!

For example, you can use the menus to set call diverts and similar services on some models of phone, but these menus aren't available on all. If you know the underlying GSM codes, you can set and amend these services with any mobile handset, and store the commands in a memory, so you could store the command to divert all calls to your home number, and set it up with just two or three key presses.

The answerphone systems offered by some of the mobile networks are powerful and comprehensive, but it takes time, effort and call charges to find all the facilities. We help you with an answerphone page for each network.

Section contents

Phonebook explains how to use the very useful facility for storing names and numbers, to avoid the need to carry an address book with you.

Diverts explains how to send calls to a different phone number.

Answerphone tells you how to set up and use the answerphone (voicemail) service provided by your mobile network.

Fax and Data gets a page to itself (and deserves more!)

SMS is a way to send and receive text messages on your mobile phone.

WAP is a means of accessing information from the internet using your phone.

GSM codes allow you to change settings by simply typing numbers on your mobile's keypad, avoiding the need for complex menus, and allowing you to store frequently-used commands in the phonebook.

Call Waiting tells you that another caller is trying to reach you when you're in a call.

Batteries: the lifeblood of mobile phones. How to get the best from them.

Sim cutting - how to fit a large (credit-card size) sim card into a small phone (and vice versa).

Customise tells you how to make your mark with (or on?) your mobile phone.

Caller ID allows you to know who is ringing your phone

What are all these codes and passwords?

Passwords and Personal Identification Numbers (PIN) provide an extra level of security, but there is a confusing profusion of them. This page provides a guide to what they all are.

Keylock

This is a way to lock the phone keypad so that you don't make calls by accidentally pressing buttons. The exact sequence of keys varies from handset to handset, but many use [menu] then * or pressing the * and # keys simultaneously. Note that this lock may not disable the power off button, and will not prevent the emergency call number being entered.

SIM PIN Code

This is a pin code that locks the sim card until you enter the correct code. This protects your account, even if your sim is put into another handset. The default code is set by the Service Provider (often 0000 on Vodafone, 7890 on Virgin). You can change it if you like, but make sure you don't forget the new code.

SIM PIN Code 2

This sim card code controls access to some of the more advanced features of the phone, such as the fixed dialling list (a restricted list of numbers the phone can call: handy if you lend a phone to a teenage son or daughter!) The default code is set by the Service Provider. You can change it if you like, but make sure you don't forget the new code. Not all networks support pin 2.

Phone Security Code

This locks the handset, as opposed to the sim card. Some phones will accept incoming calls with this lock enabled, but many require the code to be entered even to answer a call. You can also set some handsets to only accept a "new" sim if the phone security code is entered. The default code varies according the handset make and model. You can change it if you like, but make sure you don't forget the new code.

Network PIN / Call Barring Code

This is the code you need to change call barring settings that are stored on the network. The default code is set by the network (0000 MTN, VMOBIEL). You can change it if you like, but make sure you don't forget the new code.

Account Password

This is a word that you choose when registering your account so that Customer Services staff can be sure that it is you they are talking to. You choose this yourself.

Account Password 2

Some networks allow a second phone user on an account to have a separate password. It functions as the Account Password does.

Voicemail PIN

This is a code that you choose to secure the voicemail/answerphone service on your mobile phone account. If you do not set a voicemail PIN, you may not be able to access voicemail from anywhere but your own mobile phone. In some cases, leaving the voicemail PIN at the default can let other people listen to or delete messages left for you. There may be a default code (0000 MTN, GLO, VMOBIEL, MTEL), but you should change it straight away!

Pin Unlock Code (PUK)

If you miskey (or misremember) your SIM PIN code, and enter the wrong one three times in a row, the sim will lock up, and you need to enter the unlock code to release it. You should ask your Service Provider for this code when you need it. Don't try to guess it, because after a few wrong guesses, the sim will be permanently disabled.

Pin 2 Unlock Code (PUK2)

This performs the same function as the PUK, but for SIM PIN 2. You should ask your Service Provider for this code when you need it. Don't try to guess it, because after a few wrong guesses, the sim will be permanently disabled.

Master Reset Code

Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security Code wrongly too many times. If you know you have forgotten the Security Code, entering the Master Reset Code instead will do (even though it is probably more digits). You should ask your ME 4 THAT IF U NEED IT

Special Code/Service Provider Lock Code

This code is required to allow a phone locked to a particular network's sim cards to be used with a sim card from another network. Normally, only MTN, VMOBIEL,GLO handsets in this way

The unlock code varies from individual handset to handset

Blacklisting

This is not a security code, but it may work like one! To help combat mobile phone thefts, the networks share a a database of the IMEI (serial numbers) of mobile phones that have been reported stolen. Once a phone is on this list, it will not be allowed to use any of the networks.

This can be a risk if you buy a second-hand phone, because if it has been stolen, or if an unscrupulous seller makes an insurance claim after selling, the phone you bought in good faith may be permanently disabled. Be very careful to check the source of a second-hand phone!

I will continue tommorrow.

NOKIA 3110

Show IMEI code
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture and hardware model number of your phone.
* # 3110 #

Show warranty information
To get additional information from your phone you can use the so called
"warranty codes", try typing:
*#92702689# (= *#war0anty#).
You will be asked a 'warranty code:'
type:
6232 (OK) : To display the Month and Year of Manufacture.
7332 (OK) : To display the date of the last repairment.
7832 (OK) : To display (if previously set) the date where the phone was purchased.
9268 (OK) : To display the Serial Number.
37832 (OK) : To set the Purchasing Date MMYY (Warning: You can only do this once)
87267 (OK) : To Confirm Transfer

Sim Clock information
To check if the Sim-Clock can be stopped type:
*#746025625# (= *#sim0clock#)

Restore factory settings
To restore factory settings
(This does not include memory, language and counters) type:
*#7780#

SPLock Mode
If you want to inquire your phone about SPlock, you can use the following:
# pw + 1234567890 + [y] #
If you put your hands on your 10 digits SPlock code yet, then you can modify the status of the above results, typeing:
# pw + [mastercode] + [y] #
where:
[y] is 1 up to 4, and
any ten digits number seems working instead of "1234567890"

Unlock SP lock
Here is a way to Unlock your phone which is Service Provider locked,
without to know SPLock code !!!!
Give it a try:
First of all, PIN CODE MUST BE ON, then press:
C
<arrow down>
C and hold until it clears display
* and hold until start to blink
* and hold until start to blink
04*<your pin>*<your pin>*your pin>#
Each time you turn your phone OFF it resets the lock,
so this need to be done each time you'll turn your phone ON
Anyway it's better than nothing, isn't it?

Nokia Cellular Data Suite
Want to use your laptop to send fax and data with your 3110's Nokia Phone ?
Using the Nokia Data Suite you'll be able to do this and much more ...!!



NOKIA 3210

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Half Rate Codec
Half Rate Codec will decrease sound quality but it gives you about 30%
lower battery consumption.
You may enable it by this code:* 4720 #
or disable it:# 4720 #

Sim Clock information
To check if the Sim-Clock can be stopped type:
*#746025625# (= *#sim0clock#)

SPLock Mode
If you want to inquire your phone about SPlock, you can use the following:
# pw + 1234567890 + [y] #
If you put your hands on your 10 digits SPloock code yet,
then you can modify the status of the above results, typeing:
# pw + [mastercode] + [y] #
where:
[y] is 1 up to 4, and
any ten digits number seems working instead of "1234567890"



NOKIA 5110

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture and hardware model number of your phone.
* # 0000 #

Show Service Menu
To get additional information from your phone you can use the
so called "warranty code", try typing:
*#92702689# (= *#war0anty#).
Now you are in service menu where you'll find:
1 IMEI (International Mobile Equipment Identification)
2 Made MM/YY (date of production of the phone mm/yy)
3 Purchasing Date (here you can enter the date of purchase.
If you enter an incorrect date, you cannot correct it later !
4 Repaired (date of repair, if there was one)
5 Transfer user data?

Enhanched Full rate codec
*3370# EFR will be activated after a reboot of the phone ( consumes more power )
#3370# EFR will be switched off after a reboot of the phone.

Half rate codec
*4720# Half Rate coded will be activated after a reboot of the phone ( better standby time )
#4720# Half Rate coded will be de-activated after a reboot of the phone

Profiles Menu
If you press the "Power on"
button for a short moment, the menu with the profiles is shown on the display.
If you press one more time,
the mobile turns itself off.
You can use the up and down cursor keys to scroll and enable a different alert setting.

Unlock SP lock
Here is a way to Unlock your phone which is Service Provider locked,
without to know SPLock code !!!!
Give it a try:
First of all, PIN CODE MUST BE ON, then press:
C
<arrow down>
C and hold until it clears display
* and hold until start to blink
* and hold until start to blink
04*<your pin>*<your pin>*your pin>#
Each time you turn your phone OFF it resets the lock,
so this need to be done each time you'll turn your phone ON
Anyway it's better than nothing, isn't it?



NOKIA 6110 / 6150

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture
and hardware model number of your phone.
* # 0000 #
if the above won't work, try this one too:
* # 6110 #

Show Service Menu
To get additional information from your phone
you can use the so called "warranty codes", try typing:
*#92702689# (= *#war0anty#)
now you can just scroll through the information like in any other menu.
If it won't work and the phone ask you for a 'warranty code:' try:
6232 (OK) : To display the Month and Year of Manufacture.
7332 (OK) : To display the date of the last repairment.
7832 (OK) : To display (if previously set) the date where the phone was purchased.
9268 (OK) : To display the Serial Number.
37832 (OK) : To set the Purchasing Date MMYY (Warning: You can only do this once)
87267 (OK) : To Confirm Transfer

Enhanched Full rate codec
*3370# EFR will be activated after a reboot of the phone ( consumes more power )
#3370# EFR will be switched off after a reboot of the phone.

Software Bug
Someone reported us that some Nokia 6110 remain
dead if you run out of battery while the phone has its keyboard locked.
Nokia seems to be aware of this bug and
hopefully will be correct in next software version (6110i maybe ??).

Profiles Menu
If you press the "Power on"
button for a short moment, the menu with the profiles is shown on the display.
If you press one more time, the mobile turns itself off.
You can use the up and down cursor keys to scroll and enable a different alert setting.

Pin Out
1 - VIN CHARGER INPUT VOLTAGE 8.4V 0.8A
2 - CHRG CTRL CHARGER CONTROL PWM 32Khz
3 - XMIC MIC INPUT 60mV - 1V
4 - SGND SIGNAL GROUND
5 - XEAR EAR OUTPUT 80mV - 1V
6 - MBUS 9600 B/S
7 - FBUS_RX 9.6 - 230.4 KB/S
8 - FBUS_TX 9.6 - 230.4 KB/S
9 - L_GND CHARGER / LOGIC GND


NOKIA 8110 / 8110 i

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture
and hardware model number of your phone.
* # 8110 #

Show Service Menu
To get additional information from your phone
you can use the so called "warranty codes", try typing:
*#92702689# (= *#war0anty#)
now you can just scroll through the information like in any other menu.
If it won't work and the phone ask you for a 'warranty code:' try:
6232 (OK) : To display the Month and Year of Manufacture.
7332 (OK) : To display the date of the last repairment.
7832 (OK) : To display (if previously set) the date where the phone was purchased.
9268 (OK) : To display the Serial Number.
37832 (OK) : To set the Purchasing Date MMYY (Warning: You can only do this once)
87267 (OK) : To Confirm Transfer

Sim Clock information
To check if the Sim-Clock can be stopped type:
*#746025625# (= *#sim0clock#)


Pin-Out
Desktop Charger----------------------|
| |
| |
CHARGER--| + TOP OF PHONE -
V V 1 2 3 4 5 6 V
(o) | | [= = = = = =] | |
7 8 9 10 11 12
1 - Charger/System Ground
2 - Accessory Output Supply. (3.4V...10V - 50mA)
br> C and hold until it clears display
* and hold until start to blink
* and hold until start to blink
04*<your pin>*<your pin>*your pin>#

Each time you turn your phone OFF it resets the lock, so this need to be done each time you'll turn your phone ON
Anyway it's better than nothing, isn't it?



NOKIA 8810

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture
and hardware model number of your phone.
* # 0000 #

Show Service Menu
To get additional information from your phone
you can use C
<arrow down>
C and hold until it clears display
* and hold until start to blink
* and hold until start to blink
04*<your pin>*<your pin>*your pin>#

Each time you turn your phone OFF it resets the lock, so this need to be done each time you'll turn your phone ON
Anyway it's better than nothing, isn't it?



NOKIA 8810

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version, date of manufacture
and hardware model number of your phone.
* # 0000 #

Show Service Menu
To get additional information from your phone
you can use the so called "warranty codes", try >Date of Manufacture
This code shows you the manufacturing date of your Communicator:
*#3283# (or *#DATE#)



NOKIA 9000

Show IMEI code
What's the IMEI code of your phone, simply press:
* # 06 #
you'll read it on display.

Software Version
This code shows you software version of your Communicator:
*#682371158412125#

Date of Manufacture
This code shows you the manufacturing date of your Communicator:
*#3283# (or *#DATE#)

AMPS (Advanced Mobile Phone Service)

AMPS was the original standard technology used on the first analog wireless phone systems in the United States, and it is still one of the most widely used technologies today. AMPS which operates in the 800Mz band, covers the entire country, and is utilized by 80% of US mobile phone subscribers.

Analog

Initially all cellular phones employed analog communications which transmitted voice messages as if they were sound waves. When you speak into an analog wireless phone, your voice wave is modulated by a radio wave when it is transmitted over the air.

First generation (1G) wireless phones are analog phones that transmitted your voice using what was known as the AMPS protocol systems. As technology evolved into newer digital systems analog systems are becoming increasingly rare today.

Bluetooth

Bluetooth is a computing and telecommunications industry specification that describes how mobile phones, computers, and personal digital assistants (PDAs) can easily interconnect with each other and with home and business phones and computers using a short-range wireless connection. Using this technology, users of cellular phones, pagers, and personal digital assistants such as the Palm Pilot will be able to buy a three-in-one phone that can double as a portable phone at home or in the office, get quickly synchronized with information in a desktop or notebook computer, initiate the sending or receiving of a fax, initiate a printout, and, in general, have all mobile and fixed computer devices be totally coordinated. The technology requires that a low-cost transceiver chip be included in each device. Products with Bluetooth technology are expected to appear in large numbers beginning in 2000.

How It Works:

Each device is equipped with a microchip transceiver that transmits and receives in a previously unused frequency band of 2.45 GHz that is available globally (with some variation of bandwidth in different countries). In addition to data, up to three voice channels are available. Each device has a unique 48-bit address from the IEEE 802 standard. Connections can be point-to-point or multipoint. The maximum range is 10 meters. Data can be exchanged at a rate of 1 megabit per second (up to 2 Mbps in the second generation of the technology). A frequency hop scheme allows devices to communicate even in areas with a great deal of electromagnetic interference. Built-in encryption and verification is provided.


CDMA (Code Division Multiple Access)

CDMA is a multiple access system used in radio communication. This digital technology separates communications by a code method. This way, the system can mix a number of calls into the same voice channel. When the cellular radio tower receives the information, it looks at the coding used and reassembles each individual call, completing the transmission.

Cellular Phone

Cellular or mobile phones are portable, wireless phone systems that typically operate in the 800 MHz frequency range. The cellular system, developed in the US, transmits voice calls using various types of technologies which are continuously evolving.


Circuit Switched vs. Packet Switched

There are two types of wireless data transmission - Circuit Switched and Packet Switched. Circuit Switched employs a dedicated voice channel to transmit and receive data, essentially like keeping a single phone line open during your entire conversation. A cellular modem uses Circuit Switched transmission, which allows you to dial up a computer over your wireless phone just like you would using a landline connection. Packet switched data transmission compresses the data and sends short data bursts between or during gaps in conversations on the voice channels. Packet data digital transmission is ideal for using your phone to send short messages, including E-mail, or access news headlines, and stock quotes from the Internet.


Digital Phone

Digital systems convert the sound wave created by your voice into a stream of 1's and 0's. When digitized, the information is compressed, manipulated, and transmitted in such a way that your conversations are more clear and static-free, and your conversation is made more secure from electronic "eavesdropping". Digital wireless technology also allows networks to carry more conversations at one time and allow additional features such as text messaging, fax, e-mail transmission, and internet access to be available to the user.


Dual Band

A Dual Band wireless phone can operate on either an 800 MHz system or on a 1900 MHz frequency system. Therefore, if a phone used a single technology (e.g. TDMA) but was dual band (e.g. 800 MHz and 1900 MHz) that phone could operate in the TDMA mode on either an 800 MHz system or a 1900 MHz system.


Dual Mode

A Dual Mode wireless phone can operate in two different transmission technologies, such as AMPS or TDMA. Since the phone is dual mode, it can operate on an 800 MHz system using either the AMPS mode or the TDMA technology mode.

Dual Band, Dual Mode

A Dual Band, Dual Mode wireless phone can operate using a combination of two different frequencies and two different transmission technologies. A Dual Band, Dual Mode phone could operate at either 800 MHz or 1900 MHz and support both AMPS technology and TDMA technology. Typically, for your wireless phone to work, you must be within the wireless phone system area that supports the same technology and frequency with which that phone was designed to work.. With a Dual Band, Dual Mode phone, however, you can take your phone outside of your home service area and generally continue to have wireless service available.

EDGE (Enhanced Data Rates for GMS Evolution)

EDGE (Enhanced Data GSM Environment), a faster version of the Global System for Mobile (GSM) wireless service, is designed to deliver data at rates up to 384 Kbps and enable the delivery of multimedia and other broadband applications to mobile phone and computer users. The EDGE standard is built on the existing GSM standard, using the same time-division multiple access (TDMA) structure and existing cell arrangements. Ericsson notes that, when available, its base stations can be updated with software.

EDGE is expected to be commercially available in 2001. It is regarded as an evolutionary standard on the way to Universal Mobile Telecommunications Service (UMTS).

GPRS (General Packet Radio Service)

GPRS (General Packet Radio Service) is a packet-based wireless communication service that, when available in 2000, promises data rates from 56 up to 114 Kbps and continuous connection to the Internet for mobile phone and computer users. The higher data rates will allow users to take part in video conferences and interact with multimedia Web sites and similar applications using mobile handheld devices as well as notebook computers. GPRS is based on Global System for Mobile (GSM) communication and will complement existing services such circuit-switched cellular phone connections and the Short Message Service (SMS).

In theory, GPRS packet-based service should cost users less than circuit-switched services since communication channels are being used on a shared-use, as-packets-are-needed basis rather than dedicated only to one user at a time. It should also be easier to make applications available to mobile users because the faster data rate means that middleware currently needed to adapt applications to the slower speed of wireless systems will no longer be needed. Once GPRS becomes available, mobile users of a virtual private network VPN will be able to access the private network continuously rather than through a dial-up connection.

GPRS will also complement Bluetooth, a standard for replacing wired connections between devices with wireless radio connections. In addition to the Internet Protocol (IP), GPRS supports X.25, a packet-based protocol that is used mainly in Europe. GPRS is an evolutionary step toward Enhanced Data GSM Environment (EDGE) and Universal Mobile Telephone Service (UMTS).


GSM (Global System for Mobile communication)

GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a variation of time division multiple access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot. It operates at either the 900 MHz or 1800 MHz frequency band.

GSM is the de facto wireless telephone standard in Europe. GSM has over 120 million users worldwide and is available in 120 countries, according to the GSM MoU Association. Since many GSM network operators have roaming agreements with foreign operators, users can often continue to use their mobile phones when they travel to other countries.

American Personal Communications (APC), a subsidiary of Sprint, is using GSM as the technology for a broadband personal communications service (PCS). The service will ultimately have more than 400 base stations for the palm-sized handsets that are being made by Ericsson, Motorola, and Nokia. The handsets include a phone, a text pager, and an answering machine.

GSM together with other technologies is part of an evolution of wireless mobile telecommunication that includes High-Speed Circuit-Switched Data (HSCSD), General Packet Radio System (GPRS), Enhanced Data GSM Environment (EDGE), and Universal Mobile Telecommunications Service (UMTS).

i-mode

Although relatively unknown in the United States, i-mode is a wireless service launched in Japan in the spring of 1999 by NTT DoCoMo. The service is accessed by a wireless packet network and allows the user to access the Internet and send short-text messages on their digital wireless phone. i-Mode is hugely popular in Japan and may be a primary influence in the digital wireless world market.


PCS (Personal Communications Service)

PCS is the name adopted by the new, digital wireless service providers who operate new phone systems in the 1900 MHz frequency range. PCS networks employ a range of technologies including GSM, TDMA and CDMA-One.

Roaming

When you purchase a service plan with a cellular phone, you are subscribing to a particular type of technology provided by your wireless system carrier. Roaming enables you to utilize your mobile phone via the network facilities of another provider outside of your subscribed service area.


Second Generation (2G)

Second generation (2G) wireless phones are digital and are capable of providing voice / data / fax transfer as well as a range of other value-added services. Currently 2G systems are constantly evolving with higher data rates through new technologies such as TDMA, CDMA, GSM, PCS, and GPRS.

TDMA (Time Division Multiple Access)

TDMA is a digital technology that allows multiple users to share the same voice channel by having each conversation transmitted alternately over short periods of time. Some versions of TDMA use the IS-136 specification for advanced digital wireless services. It is also one of the world’s most widely deployed digital wireless systems.

TDMA technology evolved from the original analog AMPS networks, and attracted many new network operators. It provides unlimited capacity, efficient coverage, and is well suited to emerging applications, such as wireless virtual private networks (VPNs). TDMA is also the ideal platform for PCS phones.

TDMA breaks voice signals into sequential data pieces of defined length and sends each piece into an information conduit at specific time intervals. TDMA then reconstructs the pieces at the end of the conduit on the receiving phone. GSM and US-TDMA standards accommodates a much larger number of users by more finely dividing a radio frequency into time slots and allocating these slots to multiple calls.


Third Generation (3G)

Third generation (3G) mobile phones and communication systems use high-speed data transfer technologies and state-of-the-art radio terminal technology. These technologies enable advanced user features on wireless handsets including multimedia, advanced text messaging, and access to e-mail and the Internet.

WAP (Wireless Application Protocol)

The de facto worldwide standard for providing Internet communications and advanced telephony services on digital mobile phones, pagers, digital assistants, and other wireless terminals. The WAP Forum was established in 1997 by several wireless phone companies and Unwired Planet (now Phone.com). The Panasonic Wireless Design Center is one of Its current members now comprising over 200 leading firms in the wireless communication field.


Wireless Phone Frequencies

For a phone to work in an area other than its "home" area, it must be in a system that supports the technology used by that phone‚ in the frequency which the phone is designed to work. 800 Megahertz (800 MHz) is the radio frequency that was originally assigned to cellular phones by the FCC in 1983. Cellular phones using AMPS, NAMPS, TDMA, and CDMA technologies are all currently available in this frequency range.

1900 Megahertz, (1900 MHz) is the radio frequency range added by the FCC in order to create additional competition in wireless phone services. Wireless phones using PCS, GSM, TDMA, and CDMA technologies are currently available using this frequency range.

*#9998*228# : Battery status (capacity, voltage, temperature)
*#9998*246# : Program status
*#9998*289# : Change Alarm Buzzer Frequency
*#9998*324# : Debug screens
*#9998*364# : Watchdog
*#9998*377# : EEPROM Error Stack - Use side keys to select values. Cancel and ok.
*#9998*427# : Trace Watchdog
*#9998*523# : Change LCD contrast - Only with version G60RL01W
*#9998*544# : Jig detect
*#9998*636# : Memory status
*#9998*746# : SIM File Size
*#9998*778# : SIM Service Table
*#9998*785# : RTK (Run Time Kernel) errors - if ok then phn is reset, info is put in memory error.
*#9998*786# : Run, Last UP, Last DOWN
*#9998*837# : Software Version
*#9998*842# : Test Vibrator - Flash the screenligth during 10 seconds and vibration activated.
*#9998*862# : Vocoder Reg - Normal, Earphone or carkit can be selected
*#9998*872# : Diag
*#9998*947# : Reset On Fatal Error
*#9998*999# : Last/Chk

All Samsung Secret Codes...

*2767*688# = Unlocking Code,

*#8999*8378# = All in one Code ,

*#4777*8665# = GPSR Tool ,

*#8999*523# = LCD Brightness

*#8999*3825523# = External Display

,*#8999*377# = Errors

,#*5737425# = JAVA Something{I choose 2 and it chrashed}][/b]

*#2255# = Call List ,

#*536961# = Java Status Code

,#*536962# = Java Status Code ,

#*536963# = Java Status Code

#*53696# = Java Status Code

,#*1200# = AFC DAC Val ,

#*1300# = IMEI ,

#*1400# = IMSI

,#*2562# = White for 15 secs than restarts.

#*2565# = Check Blocking

#*3353# = Check Code

#*3837# = White for 15 secs than restarts.

#*3849# = White for 15 secs than restarts.

#*3851# = White for 15 secs than restarts.

#*3876# = White for 15 secs than restarts.

#*7222# = Operation Typ (Class C GSM)

#*7224# = I Got !! ERROR !!

#*7252# = Oparation Typ (Class B GPRS)

#*7271# = Multi Slot (Class 1 GPRS)

#*7274# = Multi Slot (Class 4 GPRS)

#*7276# = Dunno

#*7337# = EEPROM Reset (Unlock and Resets Wap Settings)

#*2787# = CRTP ON/OFF

#*3737# = L1 Dbg data

#*5133# = L1 Dbg data

#*7288# = GPRS Attached

#*7287# = GPRS Detached

#*7666# = SrCell Data

#*7693# = Sleep Act/DeAct (Enable or Disable the Black screen after doing nothing for a while)

#*7284# = Class : B,C or GPRS

#*2256# = Calibration Info

#*2286# = Battery Data

#*2527# = GPRS Switching (set to: class 4, class 8, class 9 or class 10)

#*2679# = Copycat feature (Activate or Deactivate)

#*3940# = External loop test 9600 bps

#*4263# = Handsfree mode (Activate or Deactivate)

#*4700# = Half Rate (Activate or Deactivate)

#*7352# = BVMC Reg value

#*8462# = Sleeptime

#*2558# = Time ON

#*3370# = EFR (Activate or Deactivate)

#*3941# = External looptest 115200 bps

#*5176# = L1 Sleep

#*7462# = SIM phase

#*7983# = Voltage/Frequenci (Activate or Deactivate)

#*7986# = Voltage (Activate or Deactivate)

#*8466# = Old time

#*2255# = Call

#*5187# = L1C2G trace (Activate or Deactivate)

#*5376# = White for 15 secs than restarts.

#*6837# = Official Software Version

#*7524# = KCGPRS

#*7562# = LOCI GPRS

#*7638# = RLC allways open ended TBF (Activate or Deactivate)

#*7632# = Sleep mode Debug

#*7673# = Sleep mode RESET

#*2337# = Permanent Registration Beep

#*2474# =

#*2834# = Audio Path

#*3270# = DCS support (Activate or Deactivate)

#*3282# = Data (Activate or Deactivate)

#*3476# = EGSM (Activate or Deactivate)

#*3676# = Flash volume formated

#*4760# = GSM (Activate or Deactivate)

#*4864# = Dunno doesn't work on newer versions

#*5171# = L1P1

#*5172# = L1P2

#*5173# = L1P3

#*7326# = Accessory (I got Vibrator)

#*7683# = Sleep variable (

#*7762# = SMS Brearer CS (Activate or Deactivate)

#*8465# = Time in L1

#*9795# = wtls key

#*2252# = Current CAL

#*2836# = AVDDSS Management (Activate or Deactivate)

#*3877# = Dump of SPY trace

#*7728# = RSAV done# (Everything went to standart but nothing was deleted)

#*2677# = ARM State (None or Full Rate)

*#8999*636# = Have no clue what it is, i see 20 lines

*#9999# = Software version

*#8999*8376263# = HW ver, SW ver and Build Date

*#8888# = HW version

*#8377466# = Same HW/SW version thing

*#7465625# = Check the locks

*7465625*638*Code# = Enables Network lock

#7465625*638*Code# = Disables Network lock

*7465625*782*Code# = Enables Subset lock

#7465625*782*Code# = Disables Subset lock

*7465625*77*Code# = Enables SP lock

#7465625*77*Code# = Disables SP lock

*7465625*27*Code# = Enables CP lock

#7465625*27*Code# = Disables CP lock

*7465625*746*Code# = Enables SIM lock

#7465625*746*Code# = Disables SIM lock

*7465625*228# = Activa lock ON

#7465625*228# = Activa lock OFF

*7465625*28638# = Auto Network lock ON

#7465625*28638# = Auto Network lock OFF

*7465625*28782# = Auto subset lock ON

#7465625*28782# = Auto subset lock OFF

*7465625*2877# = Auto SP lock ON

#7465625*2877# = Auto SP lock OFF

*7465625*2827# = Auto CP lock ON

#7465625*2827# = Auto CP lock OFF

*7465625*28746# = Auto SIM lock ON

#7465625*28746# = Auto SIM lock OFF

*2767*3855# = E2P Full Reset

*2767*2878# = E2P Custom Reset

*2767*927# = E2P Wap Reset

*2767*226372# = E2P Camera Reset

#*6420# = MIC Off

#*6421# = MIC On

#*6422# = MIC Data

#*6428# = MIC Measurement

#*3230# = Trace enable and DCD disable

#*3231# = Trace disable and DCD enable

#*3232# = Current Mode

#7263867# = RAM Dump (On or Off)

*2767*49927# = Germany WAP Settings

*2767*44927# = UK WAP Settings

*2767*31927# = Netherlands WAP Settings

*2767*420927# = Czech WAP Settings

*2767*43927# = Austria WAP Settings

*2767*39927# = Italy WAP Settings

*2767*33927# = France WAP Settings

*2767*351927# = Portugal WAP Settings

*2767*34927# = Spain WAP Settings

*2767*46927# = Sweden WAP Settings

*2767*380927# = Ukraine WAP Settings

*2767*7927# = Russia WAP Settings

*2767*30927# = GREECE WAP Settings

*2767*73738927# = WAP Settings Reset

*2767*49667# = Germany MMS Settings

*2767*44667# = UK MMS Settings

*2767*31667# = Netherlands MMS Settings

*2767*420667# = Czech MMS Settings

*2767*43667# = Austria MMS Settings

*2767*39667# = Italy MMS Settings

*2767*33667# = France MMS Settings

*2767*351667# = Portugal MMS Settings

*2767*34667# = Spain MMS Settings

*2767*46667# = Sweden MMS Settings

*2767*380667# = Ukraine MMS Settings

*2767*7667#. = Russia MMS Settings

*2767*30667# = GREECE MMS Settings

*335# = Delete all MMS Messages

*663867# = Dump Mm file

#*536961# = WAPSAR enable / HTTP disable

#*536962# = WAPSAR disable / HTTP enable

#*536963# = Serial eable / Others disable

#*53696# = Java Download Mode

#*5663351# = Wap Model ID [Your Model]

#*5663352# = Wap Model ID [SEC-SGHXXXX/1.0]

#*566335# = Wap Model ID [SEC-SGHXXXX/1.0]

*2767*66335# = Check on which model it is

*2767*7100# = SEC-SGHS100/1.0

*2767*8200# = SEC-SGHV200/1.0

*2767*7300# = SEC-SGHS300/1.0

*2767*7650# = Nokia7650/1.0

*2767*2877368# = Reset WAP Model ID to standart

Pls if you need any thing to know about ur phone pls just PM me.
Even if ur phone have any problem let me know.    I promise to connect u to an expert repairman that is close to u if u donn't have.

What is MMS?
Mobile Messaging is evolving beyond SMS text messaging with the introduction of MMS (Multimedia Messaging Service)

MMS delivers a total communication experience, allowing personalised multimedia content such as images, audio, text, video and combinations of these.

Capture and share your experiences when and wherever they happen.......

Imagine relaxing on a sun drenched beach and being able to send a picture to your work colleagues.

Not sure about that dress? Get a second opinion by sending a picture of it to a friend.

The opportunities are endless!

So what exactly is MMS and how does it work? What benefits will it have for the user?  [b][/b]

Multimedia Messaging Service (MMS) is a store and forward messaging service that allows mobile subscribers to exchange multimedia messages with other mobile subscribers. As such it can be seen as an evolution of SMS, with MMS supporting the transmission of additional media types:

text

picture

audio

video

combinations of the above
Multimedia Messaging Service (MMS) is an important emerging service, which allows the sending of multiple media in a single message, and the ability to send a message to multiple recipients.
The originator can easily create a Multimedia Message, either using a built-in or accessory camera, or can use images and sounds stored previously in the phone (and possibly downloaded from a web site).

Even if the recipient phone is not switched on, the Multimedia Message will be stored and sent to the recipient as soon as they switch on their phone. In a non-roaming case, it is expected that the subscriber will allow a Multimedia Message to be downloaded automatically to their phone and then they would be notified and could see the Multimedia Message immediately.

A number of Multimedia Messages can be stored in the users handset and reviewed or forwarded at a later date.

Each Multimedia Message contains a number of pages (think of a PowerPoint slide show as an analogy). On each page, there can be one image and one set of text. An audio file can also be attached. The time that each "page" is displayed can be specified, so the user experience is somewhat like a slide show.

So how does MMS work?

Depending upon the operator, a typical example of how an MMS message can be sent and received between two compatible MMS phones is detailed below:

STEP 1: Using an MMS compatible phone, take a photo.
STEP 2: Use your phone to personalise the message by adding text, sound clip or your own voice.
STEP 3: Send the MMS message

On an compatible phone, the MMS message will appear with a new message alert. The picture message will open on the screen, the text will appear below the image and the sound will begin to play automatically.

If the message is sent to a non-compatible MMS phone the user will receive a SMS message along the lines of:

"You have been sent a picture message!"

They may then be given a website address, and possibly and username and password on which they can view the message.

Again, this is a simple example and may differ from operator to operator.

What is Multimedia Messaging?

Multimedia messaging is a next generation message service. Multimedia messaging allows a variety of message elements to be sent to a user and these can contain text, animations, photographs, sounds and in future streaming audio and video. Users can compose their own messages, receive rich content messages from content providers and forward them onto their own contacts.

When will MMS be introduced?

Some operators have already launched and many more will launch.

When will the consumers see this service?

Many operators are using it now

Why is MMS important?

For the subscriber MMS takes messaging out of the basic text users are used to and allows them to enjoy a much better messaging - more like they are used to via email or the Internet e.g. to send a greetings card or photograph of themselves.

For network operators MMS is important as it is the basis for a wide range of next generation services that pave the way for the improved 3G bandwidth to show its use, drive demand for data bandwidth and consequently increase operator revenues.

How would MMS look like to the end users?

Some of the first phones are introducing colour so this is a substantial improvement over black & white text. Initial devices may maintain the conventional size display but allow colour or grey scale images. The main thing users will see is that the experience is much more dynamic - a snapshot album of thumbnail images, a sequence of a cartoon e.g. Dilbert, captions and sounds combined with images.

What are some examples of services on MMS?

Taking a snapshot via a camera phone and sending to a friend
Receiving cartoon strips
Composing your own animated picture messages and sending to friends
Sending audio files
Sending pictures & audio files with simultaneous playback
Advertising
Music download & play (really with 3G)
Storing pictures to an on line album
Remote surveillance

What content types does MMS support?

MMS is based on common Internet technologies currently supported on a variety of content types which would include plain text, HTML, audio in a variety of formats including an efficient new standard AMR and soon MP3, pictures as GIF, JPEG, PNG and in the future video using MPEG4

I don't have an MMS phone, can I receive / send MMS messages?

You would need to be on a network that supports MMS; steps are being taken to allow MMS's to be supported at various capabilities by non MMS phone users e.g. by converting as far as possible to WAP. There are restrictions which are things like if you only have an SMS capable phone you might have to access your MMS messages using an internet connection.

Can MMS messages be sent to an email address?

Yes, it is possible to do this - although your operator will need to support this capability

How does the user's MMS experience compare to that of SMS?

The experience is far superior especially with devices with colour displays, sound, text and picture sequences.

Are there any MMS phones available now?

The Ericsson T68i was the first phone available and we are starting to see more of these in user’s hands. Nokia have also started shipping their 7650 camera enabled MMS phone and another model is due soon. Many more models are in Nigeria market too now.

Does MMS need 3G?

Not at all, we're advising GPRS is the minimum although it works over circuit switched GSM it is costly to run. 3G will benefit capabilities such as streaming audio / video for example downloading full MP4 video clips may take too long over GPRS.

How big can an MMS message be?

There is not a network limit but initial devices are specifying minimum support for 30k - it's really a manufacturer limit concerning the amount of memory

How fast is an MMS message from phone to phone?

It could parallel an email message - might normally appear near instantaneous but could be delayed by load on servers and by who's sending from where to where or by network outages. It is not however designed to be real time.

How does MMS compare to EMS?

EMS is delivered via SMS and this means it can be very costly and is using limited control channel capacity in a GSM network. EMS also supports picture messaging/ animation but MMS is much more capable of serving up multiple media together and also you wouldn't enjoy the experience of more complex media e.g. photographs, sound and video.

How does MMS compare to email?

It has many similarities to rich email content but delivered in a mobile friendly way. In fact MMS uses email technologies to underpin the technical capabilities. Some aspects of MMS will exceed standard email capabilities e.g. true control over sequences which conventional email doesn't handle.

How is the MMS environment different from SMS?
MMS requires network operators to install MMS Server/ Relay equipment which integrates with existing infrastructure and connects to content providers, email gateways. SMS uses a control channel whereas MMS uses the data channel.

Is anyone setting standards for MMS?

The principle standards body is 3GPP for MMS though they use work by other standards bodies such as the WAP forum to assist in certain areas. The GSM association is active in collecting operator requirements to address to 3GPP to help advance these standards.

What is the connection between MMS and WAP?

MMS capability uses many services of WAP to make it work - particularly the lower level WAP transport mechanisms which are optimised for operation over the GSM radio interface. MMS also uses WAP's push mechanism to transparently notify users of receipt of a new message.

Does MMS require network changes?

It requires additions of infrastructure components to handle the store & forward functions of MMS. MMSCs have to connect into other network components like HLRs, a network must also be WAP capable and realistically GPRS capable. And for proper service GPRS global roaming is required.

How interoperable are MMS messages across manufacturers?

At a technical level the vendor community and operators have created an interoperability group to ensure maximum reliability in inter-working. Initially there may be differences between devices which will mean that there will be situations where an MMS composed on one device is not well rendered on another and this parallels a web page for a PC not looking good on a PDA.

What do the initials GSM stand for?
Global System for Mobile Communications

What is GSM?
GSM is an open, non-proprietary system that is constantly evolving. One of its great strengths is the international roaming capability. This gives consumers seamless and same standardised same number contactability in more than 170 countries. GSM satellite roaming has extended service access to areas where terrestrial coverage is not available.

What is technically distinctive about the technology?
GSM differs from first generation wireless systems in that it uses digital technology and time division multiple access transmission methods. Voice is digitally encoded via a unique encoder, which emulates the characteristics of human speech. This method of transmission permits a very efficient data rate/information content ratio.

How will GSM evolve?
High bandwidth services are already becoming available through second generation technologies. The development path to 3GSM is clearly mapped out and brings with it the possibilities of sophisticated data and multimedia applications. The GSM standard will continue to evolve, I with wireless, satellite and cordless systems offering greatly expanded services. These will include high speed, multimedia data services, inbuilt support for parallel use of such services and seamless integration with the Internet and wireline networks.

What is 3GSM?
3GSM is the generic term used for the next generation of mobile communications services.
These new systems will provide enhanced services to those available today ie, voice, text and data. The concepts for 3GSM services are currently being developed across the industry and by global groups such as the Third Generation Partnership Project (3GPP). The GSM Association's vision of 3GSM is based on today's GSM standard, but evolved to include an additional radio air interface better suited to high speed and multimedia data services.

Will my current mobile phone cease to work when 3GSM systems are launched?
There will be a period in which second generation and third generation systems co-exist. In essence, third generation systems are based on second generation infrastructure and services, but offer a new radio interface, among other features. So your current mobile will continue to operate. It will be up to you whether you wish to access 3GSM services. If you do, you will need to upgrade.

What services will 3GSM offer?
Video on demand, high speed multimedia and internet access are just a few possibilities. The main benefit of third generation systems is that they will offer high end service capabilities, which include substantially enhanced capacity, quality and data rates than currently available. 3GSM services will also include concurrent usage of multiple services and bridge the gap between wireless and internet/computing.

Will third generation systems be truly worldwide and how can I find out about developments in my own country?
It is likely that there will be up to three types of technology deployed in 3GSM. These systems are being harmonised to ensure they are compatible and will accept multimode handsets. This integration of systems and services will give users worldwide roaming. Your national regulatory authority is the best and most accurate source of information on third generation licences and their availability in your country. However, the GSM Association collates this information as it becomes available and will be happy to help with any queries you may have.

Is there a health risk-using mobile phones?
The international scientific community reviews all relevant research as it is published. The consensus of these expert groups is that there is no demonstrable evidence of a risk to human health from mobile phone use. In addition, it is argued that the low powered radio signals produced by mobile phones do not have sufficient intrinsic energy to affect genetic material. The GSM Association continues to support international quality research into this question and contributes to a programme coordinated by the World Health Organisation.

Is GSM secure?
From the outset, GSM has been a system designed with stringent levels of inbuilt security. With constantly enhanced transmission protocols and algorithms added to the flexible and future proof platform, GSM remains the most secure public wireless standard in the world.

What is the GSM Association?
The GSM Association, based in Dublin, Ireland and London, UK, represents the interests of more than 690 GSM, satellite and 3GSM operators, key manufacturers and suppliers to the GSM industry as well as regulatory and administrative bodies from more than 190 countries and regions around the world. Most of the first third generation licensees are also members. The GSM Association is responsible for the continued maintenance of open standards and interoperability. The global cooperation between operators is most powerfully illuminated by the success of international roaming. One of the Association's major priorities is the development and promotion of the GSM standard worldwide.

do u have any special codes for nokia 6230 and nokia 7600?
appreciate it

hello oluwizard.i am a registerd member of nairaland with user name sammiee.i have seen ur articles and indeed ur a guru in the field.but then i am the wash and heat type of engr. u said in ur article.i'd really like to learn 4rm u. how can u help. i do not mind being an apprentice .but pls help out sir.thanks sir. u can reply me thru the forum or my mail box sam_jen2001@yahoo.com.au.sir can i also have ur phone no. if u do not mind. thanks

pls email is sam_jen2001@yahoo.com.au

check you mail box.

i read ur article ,it definately is a helping guide for those who want to get more from their cells.
well dear , i have a problem and may be u can help me if u want to ,
i am using NEC N900ig.but my service provider dont have its gprs and mms configurations and also they dont know how to manually enter settings in it,like apn menu.i am searching for a long time for any code or something like that which reveals me the apn menu so that i can manually input the gprs/mms settings in it.
my phone is imode but it can work independently on wap/gprs/mms.
my mail is ,
jazzy9002@yahoo.com
waiting for ur reply.
sulman

For more guide check www.gsmusersforum.com

please I want my receipient to receive my phone ring tone, what code should I use?

OLUWIZARD, please where can I get codes to fully unlock my Nec e616v phone from 3 network UK and the 3 features

Please i need to kwn the code for resetting nec n411i security code. please,
send to laparico2002@gmail.com

Reborn of an old topic

Reborn of an old topic

Reborn of an old topic

Reborn of an old topic

Please i need it badly. i need to reset the security code for my Nec n411i. laparico2002@gmail.com

plz how can i unlock the security code in my Nokia 6500s-1

since i mistakenly active it wit numbers have forgotten

plz help

pls help me with the default code to cancle barring on the glo network

@poster, am I supposed to read all that. . . .

how can i reveal a hidden phone number. if you know email on oshatoba@yahoo.com

Please Oluwizard, Kindly help me with a code to tap into calls from another Nokia phone, send me an email to damolaj@gmail.com thanks.