GSM CODES

HOW TO KNOW ORIGINAL PHONE AND A FAKE PHONE

 Before you buy a new phone dial *#06# ,it will display the serial number or IMEI number which must be 15 digits and must begin with 35. Now check whether the number displayed is the same with the number on the battery base. If it's original the numbers would be the same, if fake the numbers would be different. You can check your phone right now to know whether you are using original phone or fake phone.

PRODUCT CODES FOR NOKIA, MOTOROLA, BOSCH, PHILIPS, LG, SAGEM, TRIUM, NEC, ALCATEL, SIEMENS, SAMSUNG.

NOKIA
IMEI number *#06#
Software version *#0000#
SIM lock info *#92702689#
Enhanced full rate *3370#
Enhanced half rate *4720#
OFF #3370#
To know the manufactring date dial *#0000#

MORE ABOUT NOKIA

*#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 faster though.

*#3370* - (EFR) deactivation. Phone will automatically restart. Increase battery life by 30% because phone receives less signal from network.

ALCATEL
IMEI number *#06#
Net monitor *#0000#

BOSCH
IMEI number *#06#
Default language *#0000#
Net monitor *3262255*8378#

MOTOROLA
IMEI number *#06#
Net monitor ON ***113*1*
Net monitor OFF ***113*2*
To know manufacturing date dial #02# . Dont send. Only available on C117,C115,C116,C118,C119,C126.

PHILIPS
IMEI number *#06#
SIM lock info *#8377#
Security code *#1234# OR *#7489#

SAMSUNG
IMEI number *#06#
Software version *#9999# OR *#0837#
SIM lock info *0324#
Changing LCD contrast #0523#
Memory information *0377#
Reset memory (SIM lock revovery) *2767*3855#
Battery state *9998*228#
Alarm beeper *998*289#
Vibra test *#9987*842#

SIEMENS, LG, SAGEM, TRIUM, NEC
IMEI number *06#
Software version #6276421#

HOW TO BLOCK SOMEBODY FROM CALLING YOUR NUMBER.

Dial *35*0000*THE PERSON'S NUMBER#SEND. From then on the person will not be able to call you again
with that number. Dial *35*0000# to cancel it.
Remember if you have barred more than one person when you dial *35*0000# it will cancel everybody you barred.

HOW TO MAKE SOMEBODY PAY IF THEY FLASH YOU.

If somebody is flashing you and you want to make him/her pay just dial **21*171NUMBER OF THE FLASHER#SEND. From then on if the person flash you again his/her money will be off. Please don't use this code to wicked somebody unless you have told the person not to call you again. To cancel dial
##21#SEND. Remember for some phones ##21#SEND means to bar all incoming calls. Don't use these codes if you don't know what you are doing.

HOW TO LOCK AND UNLOCK YOUR CREDIT.

With this code you will be the only person to make call from your phone. Nobody will be able to make call from your phone even if you have credit.
To lock dial **03*330*0000*2213#SEND
To unlock dial **03*2213#SEND

HOW TO CHECK YOUR WAEC RESULT WITH YOUR PHONE.

Go to text message. Type WAEC*YOUR EXAM NUMBER*PIN NUMBER ON YOUR SCRATCH CARD*YEAR OF EXAM*
send to 32327 . Wait and you will get your exam result.

HOW TO RETRIEVE YOUR STOLEN SIM CARD.

First, buy a new SIM card then call the customer care of your network. Give them the following informations: THE MOST 3 NUMBERS YOU CALL, THE LAST DAY YOU RECHARGED YOUR PHONE, THE DAY YOU LOST YOUR SIM. They know all these informations and once you have answered correctly they will put your line back to your new SIM.

HOW TO ANSWER YOUR CALLS FROM ANOTHER PERSON'S PHONE IF YOUR BATTERY IS LOW OR YOUR PHONE IS OFF.

Before you totally run out of battery dial **21*PHONE NUMBER OF THE PERSON YOU WANT TO RECEIVE YOUR CALLS FROM#SEND
From then if somebody call you it will ring on the person's phone you have put. Cancel it any time from your own SIM card by dialing ##21#SEND .Remember if you don't have battery on your phone at all you can also remove your SIM card and put it into another person's phone then put the code. In any case always dial ##21#SEND from your own SIM card to cancel it.

IF YOU CANNOT RECEIVE OR MAKE CALLS AND YOU WANT TO FIND OUT IF YOUR PHONE IS OK.

Dial #330*0000#SEND to cancel all call barrings.

HOW TO STOP SOMEBODY FROM MAKING INTERNATION CALL FROM YOUR PHONE.

Dial **33*0000#SEND
To cancel dial #331#*0000#SEND

HOW TO HIDE YOUR PHONE NUMBER BEFORE MAKING A CALL.

Dial #131#THE PERSON'S NUMBER then SEND.

HOW TO LISTEN TO ANOTNER PERSON'S PHONE CONVERSATIONS.

For example you can listen to the phone conversations of your wife, husband, girl friend, boy friends; anybody's calls.
*****I AM NOT GIVING THE CODE******

WARNING!!!.

This code is very sensitive so I'am not giving it away. This code can break marriages and cause serious troubles between friends. It is to your interest not to know this code at all because if you know it you will certainly find faults in somebody sooner or later. Remember nobody is a saint including yourself. But if you insist you need it then contact me. You will pay N1,000 to have it and you must be over 35 years of age before I give it to you. All you would need do is put the code on the phone and whenever the person receives a call it will also ring on your phone whether you live in the same house or whether you are in Abuja and the person is in Lagos you would be able to listen to his/her phone conversations. Wait until the person pick up the call first then you can start
listening to their conversations.
However, if you use this code for the right reasons it is actually very helpful. For example I use it to listen to my wife's phone conversations. But before doing that I informed my wife in advance about it and she is aware I' am monitoring her calls. For this she don't mishave. I also monitor my son's call who is in school and he is also aware I' am listening to his phone conversations. I told him before puting the codes. You must inform them before listening to their phone conversations.
Email address: ezestephen216@gmail.com or stokwudili@gmail.com 

CODES FOR MTN, ZAIN, GLO, ETISALAT, VISAFONE.

MTN FREE NIGHT CALL FROM 12.30 am to 4.30 am.
Go to message. Type 710 then send to 131 .You will be enabled. Remember you must have at least
N100 on your phone before you enjoy this service.

MTN CALL ME BACK CODES.
This codes allows you to send free text message MTN to MTN whether you have credit on your phone
or not.
For call me back *133*1*THE PERSON'S PHONE NUMBER#SEND
For I miss you dial *133*2*THE PERSON'S PHONE NUMBER#SEND
For I love you dial *133*3*THE PERSON'S PHONE NUMBER#SEND
For it's an emergency dial *133*4*THE PERSON'S PHONE NUMBER#SEND

MTN CALLER TUNE.
This enables your phone to play any music of your choice to anybody that calls you instead of the normal KRUUUUUM KRUUUUM ringing. Send REG to 4100 then you will receive a confirmation to select music code.

HOW TO REDUCE CALL COST ON MTN.
To register dial *560*1*YOUR FRIEND'S PHONE NUMBER#SEND
To confirm you have registered dial *560#SEND

HOW TO SHARE CREDIT ON MTN.
*160*THE PERSON'S NUMBER*AMOUNT*PIN NUMBER then send.

HOW TO REGISTER YOUR PIN NUMBER ON MTN.
Go to message. Text 0000 space enter your pin example 3333 space 3333 then send to 777. You will
get a confirmation.

VISAFONE.

To activate dial *888*SEND
To recharge dial *889*RECHARGE NUMBER#SEND
To check account balance dial *775#SEND OR dial *888*SEND listen to the voice prompt.
Customer service 333
Call me back *446*THE PERSON'S NUMBER#SEND
To get local news dial *444*203#SEND .Sevice costs N20 per SMS
To listen to news dial *444*201#SEND
Change to VISAFONE business line, dial *444*115#SEND . You will then start calling VISAFONE
to VISAFONE at N3.00 per munite and VISAFONE to other networks at N5.00 a munite.
Migration cost is N50.

HOW TO KNOW YOUR FLIGHT SCHEDULE ON VISAFONE
Dial *444*202#SEND .Sevice costs N20

HOW TO BORROW CREDIT FROM VISAFONE
Dial *888*YOUR PHONE NUMBER*200# .Note that you will not be able to borrow more that N500 and you do
this only at mid night when recharge card sellers closed. They will give you until one month to pay
back, within this period Whenever you recharge your phone they will collect their money sharp-sharp.

HOW TO TRANSFER CREDIT FROM ONE VISAFONE TO ANOTHER
Dial *447*RECIPIENT'S NUMBER*AMOUNT*PIN#SEND

HOW TO GET VISAFONE CALLER TUNE
Text TOP to 777 .Select from the list you will receive.

WATCH CNN NEWS FROM VISAFONE
For news type CNN send to 33800
For comerce type CNN MONEY sent to 33800 .You must have at least N200 on your phone.

ZAIN

ZAIN FREE NIGHT CALL FROM 12.30 am to 4.30 am
Go to message.Text YES then send to 701. You will be enabled. Remember you must have at least
N100 on your phone before you enjoy this service.

HOW TO REDUCE CALL COST ON ZAIN
Before you join the ZAIN family and friends to reduce call costs you must be either on ZAIN
Simply special or Smooth.
To migrate to simply special dial *141*701#
To migrate to Smooth dial *141*702#
To migrate to special smart dial *141*703#
Once you are on either of these classes to make call at cheap rate dial *141*2*THE PERSON'S
NUMBER#SEND .You would be connected and from then you pay 10 kobo per second.
To cancel it #141*3*THE PERSON'S NUMBER#SEND
To migrate to ZAIN true talk *141*708#
To migrate to ZAIN true text *141*709#

HOW TO SHARE CREDIT ON ZAIN.
Go to message. Type me2u space THE RECIPIENTS'S PHONE NUMBER space AMOUNT space 1234 send to 432

ZAIN CALL ME BACK CODES. This codes allows you to send free text message ZAIN to ZAIN whether you have
credit on your phone or not.
For call me back dial *140*THE PERSON'S PHONE NUMBER*SEND
For credit me dial *141*8*THE PERSON'S PHONE NUMBER*SEND

GLO

GLO FREE NIGHT CALL FROM 12.30 am to 4.30 am
Dial 121 then follow the voice prompt .You will be enabled. Remember you must have at least
N100 on your phone before you enjoy this service.

HOW TO REDUCE CALL COST ON GLO
Dial 125 ,follow the instructions and you will be connected.
To make video calls on GLO dial 444 with your 3G phone. Your phone and the phone of the person you call
must have video to enable you see who you are calling.

GLO CALLER TUNE
Send REG to 7728 then you will receive a confirmation to select music code.

HOW TO SHARE CREDIT ON GLO
Go to message. Text ACT space THE RECIPIENTS NUMBER space AMOUNT space 5555 send to 131.

STARCOMMS

HOW TO TRANSFER CREDIT FROM STARCOMMS TO STARCOMMS
Go to message. Type *678*THE PERSON'S NUMBER*1234#SEND
Starcomms customer care *23 SEND
Customer care 8041234 or 07028000123
Recharge access *333* or *999*
Balance enquiry *225#
How to recharge. Dial *333*PIN NUMBER ON RECHARGE CARD . Then SEND and listen to the voice
prompt, if recharge is successful press 1 to confirm.

ETISALAT
ETISALAT customer service dial 200 from etisalat phone
Dial 08090000200 from other phones
How to recharge. Dial *222*RECHARGE PIN NUMBER#SEND
To recharge by voie dial 222 then follow the voice prompt
To check balance dial *232#
To check balance by voice dial 232 then follow the voice prompt
Voice mail dial 252
To know your phone number dial *248#SEND
To transfer credit dial *223*PERSONAL SECURITY CODE*AMOUNT*RECIPIENTS NUMBER#SEND
With Etisalat ring back tune your caller listens to a voice message instead of the regular
Kruuuuuum Kruuuuuum. Dial 251 to get it.
To recharge another person from your phone dial *222*RECHARGE CARD PIN NUMBER*RECIPIENT'S NUMBER#SEND
Etisalat call me back service. This allow you to send message to etisalat subscriber at no cost.
Call me back. Thank you dial *266*THE PERSON'S NUMBER#SEND
Call me back. I love you dial *266*1*THE PERSON'S NUMBER#SEND
Call me back. I landed safely dial *266*2*THE PERSON'S NUMBER#SEND
Call me back. I'am now available dial *266*3*THE PERSON'S NUMBER#SEND
Call me back. It' an emergency *266*4*THE PERSON'S NUMBER#SEND

IMPORTANT TELECOMMUNICATIONS ABBREVIATIONS YOU SHOULD KNOW.

GSM: Global system for mobile communications
PMB: Per munite billing
SIM: Subscribers identification module
DC: Direct current
BAIC: Barring of all incoiming calls
IDD: International direct dialling
PIN: Personal identification number
BI: Basic information
OSS: Operation and support sub-system
HLR: Home location register
SMS: Short message service
ISDN: Integrated service digital network
PC: Personal computer
PUK: PIN unblocking keys
PTC: Private telecommunications center
MRF: Mobile radio frequency
IMEI: International mobile equipment identity
CUG: Close users group
MCC: Mobile country code
CW: Call waiting
PSB: Per seconds billing
MMS: Multimedia message service
WAP: Wireless application protocol

not tired of code then continue here

Most, if not all, of the commands described here are accessible via the menu of your cellphone. But what happens if you're using a new phone that you don't quite have at your fingertips, or a borrowed phone while yours is in for repairs? What happens if you need the information now but don't have the time to go delving into the manual? Always assuming you have the manual…

Barring restrictions put in place by your cellphone operator, the GSM codes described here should work on any GSM phone. Or, put in other words, if any of the network operations described below fail, it is because your operator doesn't implement them correctly, if at all.

There are very few concepts to learn, and once they are learned you'll be able to access information and perform network settings regardless of the phone you're using and how well (or how little little...) you know its menus.

SERIAL NUMBER

You should make a note of your phone's serial number, or IMEI number and keep it in a safe place. In the event of you losing the phone or it being stolen, you'll need to have it deactivated so that whoever now has it cannot run up a huge bill for you. For this, you'll need to give your operator the phone's IMEI number.

With the phone in standby, key this on its keypad:

*#06#

FIRMWARE VERSION

NB: This code is specific to Nokia phones.

As new features are added to phones, you can have your phone updated to include them. This usually entails taking the phone to an authorized dealer, where they will either perform the firmware upgrade for you on the premises or send the phone off to a service centre for this to be done. More recent phones can often be updated by the user or "OTA" (Over The Air) via wireless transfer. If the phone is still under warranty then the manufacturer will usually perform the update free of charge. If the user bricks the phone by screwing up the update at home, this tends to void the warranty.

Note that the ability to upgrade your phone's firmware is also dependant on your operator. Most operators install customised firmware into the handsets that they provide, so you might have to wait for them to provide updated versions of their firmware when the phone's manufacturer has already released new firmware for unbranded phones.

This code (only on a Nokia phone) will reveal the date and version of the firmware currently installed in the phone:

*#0000#

CHANGE PIN CODE

You can change the PIN code used to protect your SIM from unauthorized use with the following sequence:

**04*OLD_PIN*NEW_PIN*NEW_PIN#

Eg.: assuming your current PIN is 1234 and you want to make it 5678, you'd use this:

**04*1234*5678*5678#

Note that some phones (my Motorola RAZR V3 for one) intercept this sequence and display windows asking you to input the old and new PINs as soon as they see the **04* sequence.

WIRELESS CONNECTIVITY

Many handsets have BlueTooth connectivity built in so that the user can use wireless earpieces, in-car kits and the like. Some also have on-board 802.11b/g wireless network connectivity. The following two key sequences, which are specific to Symbian S60 phones such as the Nokia N95, allow the user to get information about these types of connectivity.

BlueTooth BD address

This will show you the BD address of your phone's built-in BlueTooth adapter:

*#2820# (*#bta0#)

WLAN MAC address

This code will show you the MAC address of the built-in WiFi adapter. It can be useful if, for example, you need to add it to your wireless router's "allow" table so you can access the Internet over your your WLAN:

*#62209526# (*#mac wlan#)

SYSTEM RESET

In the event of your phone becoming unstable (crashing, rebooting of its own accord, switching off for no apparent reason etc.), it can be beneficial to perform a system reset. Note that these procedures will erase the built-in memory of your phone (but not the contents of a memory card in the expansion slot), so make a backup of the contents before proceeding − either onto a memory card if you have one and if your phone allows this feature, or to your computer using software provided with your phone. Also ensure that your battery is fully charged.

Note that these codes are also specific to Nokia phones. The "Restore factory defaults" code works both on S60 and earlier S40 phones while the "Soft reset" and "Hard reset" functions only work with phones that are S60 2nd edition and later.

Restore Factory Defaults

Dial this to erase all user settings and revert to factory defaults:

*#7780# (*#rst0#)

Soft Reset

If the above didn't restore stability to your phone then maybe it's necessary to clean deeper into its innards. The next step is the "Soft reset":

*#7370# (*#res0#)

You will be prompted for the phone's "security code" when attempting to revert to factory defaults or perform a soft reset. The default security code on all Nokia handsets is 12345. If you have forgotten it then the only option you have is the hard reset, which wipes everything in the phone.

If you have a phone on which the hard reset cannot be performed by the end user, you will have to take it into an authorized dealer for them to do it. They will want proof that you own the phone before wiping it for you (a copy of the invoice with your name and the phone's IMEI number printed on it should be good).

Hard Reset

The final thing to try if neither the revert to factory defaults nor the soft reset put things right is the hard reset. Your fingers are going to have to do a bit of gymnastics here.

1.   Power the phone off.

2.   Press and hold down the '3', '*' and green 'call' keys ('multimedia', '*' and 'call' for the N78, or red, green and camera keys for a 5800 XpressMusic running firmware V20 or later - the operation is not possible on firmware V10 or V11).

3.   While maintaining these 3 keys down, switch the phone on.

4.   Wait until the phone shows signs of life such as the manufacturer's logo or a language selection screen.

5.   Release the 3 keys.

NETWORK OPERATIONS

Note that the codes given so far are not really GSM codes as such in that they don't allow you to interact with the GSM network. The codes *#06# and **04* are, however, standard across all GSM phones. While the operations described above complete automatically as soon as you type the final "#", network operations require you to send in to the operator the GSM code you've typed. Usually, this is achieved by pressing the key you normally use to dial a number − most of the time it's a green key. So, while it isn't mentioned explicitly, there is an implicit "send" or "dial" after each of the commands below.

Caller Line ID (CLI)

To find out whether your operator's default behaviour is to send your CLI when you place calls or to conceal it, you can interrogate the network with this GSM code:

*#31#

The network's default behaviour can be overridden on a per-call basis. In order to conceal your number when placing a call, you prefix the number you want to dial with #31#. So, for example, if you want to call 0123.456.7890 without revealing your number, you'd dial:

#31#01234567890

Conversely, if your network's default is to conceal CLI but you want your correspondent to see your CLI regardless, you prefix the number you're dialling with *31#. Thus, to force CLI to be sent while dialling the number above, you'd dial:

*31#01234567890

Call Waiting

Some operators provide the user with a call waiting function. Using this facility, you can have two people on the line and switch between them (but not speak to both simultaneously). This function, if supported by your line, can be interrogated and set using GSM codes. First, find out if it is active on your line with this code:

*#43#

If you get an error message in return, such as "not supported" or "undefined result", then call waiting is not supported by your line. Otherwise, you will be told whether the service is active or not.

In order to activate the service (if your line supports it), use this code:

*43#

In order to deactivate it:

#43#

Call Divert

The GSM standard knows two kinds of call divert:

·         Unconditional call divert

·         Conditional call divert

Conditional call divert occurs on any of three conditions:

·         Divert if no answer after 'x' seconds

·         Divert if unavailable (cellphone switched off or out of range)

·         Divert if line busy

Furthermore, the GSM standard knows three different types of call:

·         Voice call: normal communications when you pick up the phone to talk to someone.

·         Fax calls: the GSM terminal being called is a fax machine.

·         Data calls: your cellphone is acting as a modem hooked up to a computer accepting inbound data from elsewhere.

Each call type is assigned a number: 11 for voice calls, 13 for fax calls, 25 for data calls.

» Unconditional Call Divert

Unconditional call divert of all call types is achieved using this GSM code:

**21*target_number#

Eg.: to divert all inbound calls to 0123.456.7890 unconditionally, use this code:

**21*0123456789#

To cancel the unconditional call divert of all call types, use this code:

##21#

To find out if unconditional call divert is set up on your line, use:

*#21#

This will inform you of the unconditional call divert status of all the types of call supported by your handset.

Of course, it is also possible to divert unconditionally only calls of a particular type. This is achieved with GSM codes of the following format:

**21*target_number*CT#

…where "CT" is the 2-digit number for the call type you want to divert. So, for example, if I only want to divert fax calls unconditionally to my home fax number, which is 0987.654.3210, while still receiving voice and data calls on my cellphone, I'd use this code:

**21*09876543210*13#

Unconditional call divert status for individual call types can also be obtained from the network:

*#21*CT#

Eg.: is there an unconditional call divert set up for voice calls?

*#21*11#

Finally, unconditional call divert can also be cancelled for individual call types:

##21*CT#

Eg.: to cancel the unconditional call divert of fax calls set up above:

##21*13#

Recap:

*#21#                     : Interrogate unconditional call divert, all call types

*#21*11#                  : Interrogate unconditional call divert, voice calls

*#21*13#                  : Interrogate unconditional call divert, fax calls

*#21*25#                  : Interrogate unconditional call divert, data calls

**21*number#              : Activate unconditional call divert, all call types, to number

**21*number*11#           : Activate unconditional call divert, voice calls, to number

**21*number*13#           : Activate unconditional call divert, fax calls, to number

**21*number*25#           : Activate unconditional call divert, data calls, to number

##21#                     : Cancel unconditional call divert, all call types

##21*11#                  : Cancel unconditional call divert, voice calls

##21*13#                  : Cancel unconditional call divert, fax calls

##21*25#                  : Cancel unconditional call divert, data calls

» Conditional Call Divert: Call Divert if no answer

Under normal circumstances, if your phone rings for 20 seconds and you don't pick it up, the inbound call is diverted to your voicemail so that the caller can leave a message. You can change this default behaviour and have the call forwarded to another line, such as your land line or another cellphone. In order to do so, use this code:

**61*number*tt#

…where "tt" is the number of seconds you want your phone to ring before the call is diverted to "number". Possible values for "tt" are 05, 10, 15, 20, 25, 30.

The status of the conditional call divert if no answer can be obtained from the network:

*#61#

Conditional call divert if no answer can be cleared with this code:

##61#

Note that the usual effect of clearing the conditional call divert if no answer is not to make your phone ring forever if someone calls. It resets to the default setting of diverting to your voicemail after 20 seconds.

The above codes apply to all call types. It is also possible to have the conditional call divert if no answer apply to only one type of call, in which case they become of this form:

*#61*CT#              : Interrogate conditional call divert if no answer for call type CT

**61*number*CT*tt#    : Activate conditional CT call divert to number if no answer after tt seconds

##61*CT#              : Cancel conditional call divert if no answer for call type CT

Recap:

*#61#                : Interrogate conditional call divert if no answer, all call types

*#61*11#             : Interrogate conditional call divert if no answer, voice calls

*#61*13#             : Interrogate conditional call divert if no answer, fax calls

*#61*25#             : Interrogate conditional call divert if no answer, data calls

**61*number*tt#      : Conditional divert all calls to number if no answer after tt seconds

**61*number*11*tt#   : Conditional divert voice calls to number if no answer after tt seconds

**61*number*13*tt#   : Conditional divert fax calls to number if no answer after tt seconds

**61*number*25*tt#   : Conditional divert data calls to number if no answer after tt seconds

##61#                : Cancel conditional call divert if no answer, all call types

##61*11#             : Cancel conditional call divert if no answer, voice calls

##61*13#             : Cancel conditional call divert if no answer, fax calls

##61*25#             : Cancel conditional call divert if no answer, data calls

» Conditional Call Divert: Call Divert if unavailable

Normally, if your cellphone is switched off or out of range, any inbound calls are diverted straight to your voicemail. You can change this so that calls get routed to a different number if your cellphone is unavailable.

You use a GSM code like this to activate conditional call divert if unavailable:

**62*number#

You can cancel the conditional call divert if unavailable with this code:

##62#

Finally, you can interrogate the network for the status of your conditional call divert if unavailable with this code:

*#62#

As for unconditional call divert and conditional call divert if no answer, you can also have the conditional call divert if unavailable apply only to one kind of call. You end up with these codes:

*#62#                : Interrogate conditional call divert if unavailable, all call types

*#62*11#             : Interrogate conditional call divert if unavailable, voice calls

*#62*13#             : Interrogate conditional call divert if unavailable, fax calls

*#62*25#             : Interrogate conditional call divert if unavailable, data calls

**62*number#         : Conditional divert all calls to number if unavailable

**62*number*11#      : Conditional divert voice calls to number if unavailable

**62*number*13#      : Conditional divert fax calls to number if unavailable

**62*number*25#      : Conditional divert data calls to number if unavailable

##62#                : Cancel conditional call divert if unavailable, all call types

##62*11#             : Cancel conditional call divert if unavailable, voice calls

##62*13#             : Cancel conditional call divert if unavailable, fax calls

##62*25#             : Cancel conditional call divert if unavailable, data calls

» Conditional Call Divert: Call Divert if busy

If you have call waiting and if it is activated, then your line will become "busy" once you have two correspondents on the line. If you don't have call waiting on your line, or if you do but haven't activated it, then your line will be busy with only one conversation under way. If another person tries to call you while your line is busy, the inbound call is usually shunted straight off to your voicemail so that the caller can leave you a message. This behaviour can be altered so that an inbound call received while your line is already busy gets diverted elsewhere.

The codes are identical to those for unconditional divert and for conditional divert if unavailable, except that the number 67 is used in place of 21 or 62 respectively. So, we end up with this:

*#67#                : Interrogate conditional call divert if busy, all call types

*#67*11#             : Interrogate conditional call divert if busy, voice calls

*#67*13#             : Interrogate conditional call divert if busy, fax calls

*#67*25#             : Interrogate conditional call divert if busy, data calls

**67*number#         : Conditional divert all calls to number if busy

**67*number*11#      : Conditional divert voice calls to number if busy

**67*number*13#      : Conditional divert fax calls to number if busy

**67*number*25#      : Conditional divert data calls to number if busy

##67#                : Cancel conditional call divert if busy, all call types

##67*11#             : Cancel conditional call divert if busy, voice calls

##67*13#             : Cancel conditional call divert if busy, fax calls

##67*25#             : Cancel conditional call divert if busy, data calls