Huawei 4c engineering menu. How to open and configure the engineering menu on Android - instructions and secret codes. Commands for accessing the menu

Many of us have long fallen in love with smartphones based on operating system Android. They have always won over with their unpretentiousness, good reliability, as well as convenience and ease of use. The same can be said, in particular, about the well-known smartphones, which are also based on this operating system. The company from the Middle Kingdom always keeps up with the times and equips its phones with the most latest versions operating system and multifunctional firmware, trying to keep up with the generally recognized leaders of the android smartphone market.

However, few of us know that it is already enough comfortable phones Huawei can be made even better by fine-tuning it for yourself. What we can customize in the main menu of the phone is only the tip of a huge iceberg, the rest is hidden from users in order to avoid the failure of the device. However, people who deal with mobile phones not just at the user level, but, for example, work in the service, easily get access to advanced settings on almost any phone, resorting to the help of the engineering menu.

Running a little ahead of myself, it should be said that inexperienced users really shouldn't go to this "forbidden forest", so as not to ruin their device through carelessness. But if you are confident in yourself and think that you understand the technique at a sufficient level, then engineering menu Huawei is exactly what you need for the finest possible settings for your device.

The engineering menu gives the user access to manual setting almost all phone parameters. Usually, the engineer mode is used by developers at the stage of final configuration of the device before it goes on sale. With its help, they check the device for various errors, malfunctions, and also check the operability of all systems of the device. In addition, the engineering menu contains detailed information about the capabilities of the device and its programs.

The engineering menu is sewn directly into the Android program, however, on some phone models, developers deliberately remove it from the phone after the final check. In such cases, the owner will be already problematic to customize the device "for himself" directly from the phone and he will have to either use special programs which can be downloaded, for example, on Google play, or use third-party firmware.

Engineering menu for Huawei smartphones it is usually always in place and never deleted, so if you were not able to get into these settings the first time, then most likely you simply did not take into account the unique features of your device. Also, it will not be superfluous to repeat once again that if you are not sure of what you are doing, and working with such menus is new to you, then you should carefully consider this step. Remember that unsuccessful settings in the engineering menu may not improve the functioning of the smartphone, but, on the contrary, make it much more inconvenient, and if you change the system settings, you lose the warranty and bear full responsibility for the device yourself.

How to get to the engineering menu?

In order to get into the engineering menu of a phone based on the Android operating system, you need to enter a certain secret code in the phone dialing menu. Most often, on Android devices, you need to dial the combination * # * # 3646633 # * # *. This code is suitable for most android smartphones, but sometimes developers can change it, for example, entering the Huawei engineering menu most often occurs using the codes * # * # 2846579 # * # * or * # * # 2846579159 # * # *.

Also, codes can very often change depending on specific model device and the type of single-chip system used in it. Also, it often depends on the single-chip system of the phone whether the smartphone has a built-in engineering menu at all or not. So, on devices with MTK processors, there is such a menu on almost every device, and on devices equipped with Kvalkom processors, on the contrary, in most cases this menu is completely absent.

The code should be applied as soon as you type it on the call screen, but on some phones, sometimes you also need to press the call button for the code to work normally. It is also worth noting that the code must be entered, and not copied, since otherwise it will not work. It is also quite useless to store such codes in phone book, that is, manual input is a prerequisite for the code to work.

Commands for accessing the menu

If you do not know how to enter the Huawei engineering menu — smartphone, or you can't do it, then this is not a reason to be upset. Most Huawei devices support the so-called "service codes", which partially duplicate the functions of the engineering menu.

Service codes have been used in mobile phones for a very long time, and many of them appeared long before the first android smartphones came out. However, although such codes repeat some of the functions of the engineering menu, using them is not at all so convenient and completely unsafe. Some of them can literally delete all data stored on the phone or disable certain functions of the device. So, if you are one hundred percent not sure what this or that code means, we do not recommend you to use it for the simple reason that they can disrupt the normal functioning of your phone.

Now let's see some examples of the most useful engineering codes in our opinion:

1. *#06# - using this code you can find out your IMEI address.
2. *#*#4636#*#* - this code provides you with some information about the phone, namely: data about the device, information about the battery, statistics battery and phone usage statistics.
3. *#*#7780#*#* - this code resets to the factory settings such as: Google account data, system data and settings, downloaded applications.
4. *2767*3855# — given code fulfills full formatting smartphone. So think twice before using it.
5. *#*#34971539#*#* - this code is used to obtain information about the smartphone camera.
6. *#*#7594#*#* - used to change the modes of the on / off button.
7. *#*#273283*255*663282*#*# - using this command, you can open the file copy screen and use it to Reserve copy your most valuable photos or audio recordings.

There are also many other service codes that allow you to check and tune your telephone very carefully. However, due to the rather large number of them, this, perhaps, will be a topic for a separate article, and we are moving on.

Engineering menu functions

The Huawei engineering menu offers a wide variety of settings for advanced users. On most models of phones of the company from the Middle Kingdom, volume control, camera settings, navigation, telephony and many other functions are available that you can alter at your discretion.

In fact, there is nothing difficult in the adjustment itself. Just search for the parameter you want, such as the volume level, open it and experiment with the values ​​until you achieve the perfect result for you. However, we remind you once again that you should only change those parameters in which you are sure, otherwise you risk getting not a perfectly fitted smartphone, but a piece of annoying plastic.

Telephony

One of the main points that catches your eye when you first enter the engineering menu of the Android smartphone Huawei , this is the telephony menu. In this menu, you will have access to many useful settings, among which are such important points as:

1. Auto Answer... Here you will be able to enable or, conversely, disable automatic answer to an incoming call.

1. Band Mode... Here you can manually select the frequencies for the GSM module. All frequencies supported by your phone will be shown in this menu. You can uncheck the ranges that your operator does not provide mobile communications, which in the end will greatly save your battery.
2. CFUSetting... This option enables or disables conditional call forwarding.
3. AT Command Tool... A developer utility that supports AT commands.
4. Modem test. Fine tuning compatibility with different types devices.
5. Network selecting... Here you can also select mobile communication standards (GSM, WCDMA, LTE). For more power saving, turn off unused ones.
6. NetworkInfo... A very convenient option for checking the quality of services of a mobile operator.
7. GPRS... Setting up connections to mobile internet... An active SIM card selection is also available.
8. HSPA Info... Information about the 3G network if given type service provider is supported by your service provider.

1. Mobile data service preferred... Using this item, you can increase the priority of the Internet over voice traffic. However, be careful, as incoming calls may sometimes not be received in this case.
2. Fast dormancy... Allows you to save some of your phone's energy on 3G networks.
3. RAT Mode (Phone Info). With the help of this menu you can select the most used communication standard. Use with caution, however, as these settings will override the Network Selecting item.
4. RF De-sense Test... Choice frequency range and a specific channel for testing the quality of communication.
5. SIM ME Lock... Allows you to configure the regional parameters of the GSM module in manual mode.

Wireless interfaces

This is also a very interesting section, which is intended for testing a wide variety of modules designed for wireless transmission information such as Wi-Fi or Bluetooth:

1. Bluetooth... Offers a very wide range of settings and tests for the bluetooth module in order to test the receipt and transfer of information, as well as to start the debug mode.
2. CDS Information... Data on the parameters of wireless interfaces.
3. FM Receiver... FM module check.
4. Wi-Fi... Testing the Wi-Fi module for receiving and transmitting data on a specific frequency channel.
5. Wi-Fi CTIA... Recording of logs of testing wireless technologies.

Hardware Testing

This service menu of Huawei smartphones offers ample opportunities for testing and configuring the main equipment of the phone. In this engineering submenu, the user will have access to such items as:

1. Audio... Allows you to fine-tune the parameters of sound playback.
2. Camera. Adjustment of parameters of photos and videos, which are not included in the standard camera application.
3. Driving Current Camera... Reads amperage data from sensors in camera circuits.
4. CPU Stress Test... Testing of all subsystems of the device processor.
5. Deep Idle Setting... Using this tab, you can disable the use of sleep mode when the machine is in standby mode.
6. Sleep Mode Setting... Adjust sleep mode settings.
7. ChargeBattery. Detailed information about the battery and its charge.
8. Sensor. In this tab, the user can finely calibrate the device sensor.
9. Multi-touch... In this menu, you can check and adjust the number of touch points of your screen.
10. Location Engineer Mode... Here the user can check the data of the GPS module.

This, perhaps, is all, dear friends. We hope this article was useful to you and answered most of your questions. We wish you a great customization of your phone, and may it only bring you pleasant emotions.

The mobile technology of Huawei and its separate brand Honor, running the Android operating system, has firmly established itself in the modern market. In addition to extensive device customization in their own EMUI shell, the developers also provide access to in-depth changes system parameters in the engineering menu. After reading the article, you will learn how to access it.

We go to the Huawei service menu

The engineering menu is a settings panel in English, in which you will be able to change various parameters of the gadget and complete information about it. These settings are used by the developers during the final check of the device, just before its release for sale. If you are not sure of your actions, then do not change anything in the menu, as this can lead to unstable operation of your smartphone or tablet.

In conclusion, I would like to add that in the case of inept or incorrect manipulations in this menu, you can only harm your gadget. So think carefully if it's not worth it enough loud speaker or experimenting with a camera.

Manufacturers of Android smartphones implement and use the engineering menu for testing devices. It contains all kinds of tests and device settings that are not available to ordinary users. However, today, knowing the USSD command or downloading an application from PlayMarket, anyone can enter the engineering menu.

Why do you need a hidden engineering menu in Android

Engineering Mode - at its core hidden application which developers use for testing and installation optimal parameters mobile phone or tablet. Experts check the operation of the sensors and, if necessary, make adjustments to the functioning of the system components.

When working with the Android technical menu, be careful - changing some functions leads to device malfunctions.

How to enter the menu

To open the menu set by the manufacturer, activate the dial pad on your smartphone and enter one of the USSD commands presented in the table. After entering the command, the numbers will disappear from the screen, and a menu will open instead.

Table: Combinations for Starting Engineering Mode

Video: how to work in Engineer Mode

If the code doesn't work, and in a standard way the service menu cannot be started, use third party applications- you can download them on PlayMarket. Recommended programs - "Start engineering menu MTK", Mobileuncle Tools, Shortcut Master.

The manufacturers menu does not work on some device models with Android 4.2 JellyBean (x.x.1, x.x.2), as well as Android 5.1 Lollipop. Also, the menu is invalid when the Cyanogen Mod firmware is installed. In Android 4.4.2, when you reboot, the changes made in the application are reset.

"Launching the engineering menu of MTK"

The application allows you to open and configure the engineering menu without typing digital commands. Works correctly on MediaTek processors (МТ6577, МТ6589, etc.) and Android 2.x, 3.x, 4.x, 5.x systems. According to user reviews, the program successfully performs its functions, but after restarting the smartphone, the settings made using the application are reset.

Mobileuncle Tools program

The functionality of the application is similar to the previous one, but, in addition to accessing the engineering menu, the user can view information about the screen, sensor and device memory, as well as update the firmware, restore the IMEI number and improve the GPS. Root rights are required for stable operation.

Shortcut Master Utility

Shortcut Master is designed to work with shortcuts and system applications: create, search, delete. There is no direct function of entering the engineering menu in it. But with it you can view the list secret teams operating on your device. And by clicking on the name of the command, you will see a drop-down menu in which there will be an item "execute". Convenient and does not require unnecessary actions.

Root rights to access the engineering menu

To get into the service menu on some versions of Android, the user must have superuser (root) rights. You can get the rights using specialized applications: Farmaroot, UniversalAndRoot, Romaster SU and others. To get Root access to a device using Farmaroot:

1. Install and run the program. Link in Google Play: //play.google.com/store/apps/details?id=com.farmaapps.filemanager&hl=ru.
2. If the application supports the installation of root rights on your device, then on the screen you will see a list of possible actions, among them - "Get root". Select this item.
3. Choose one of the predefined root methods.
4. The program will start installing.
5. At the end of the procedure, you will see a message about the successful installing root access.

Possible problems and solutions:

• the application closed in the middle of the installation - restart the device and try again;
• root rights are not installed - try installing using a different method (select a new exploit in the application).

What can be configured in the menu

The appearance of the engineering mode and the options for adjusting the parameters may differ depending on the tablet or smartphone model. In the menu, users most often adjust the sound, change the camera settings, and use the recovery mode. The parameters for adjustment and the procedure for action are shown below. Be careful - the names of the menu items may differ in different device models! You act at your own risk.

Audio: boost volume

If your phone is not ringing loudly enough, find the Audio section in the engineering menu and go to LoudSpeaker Mode. Select Ring. For each signal level (level 1–6) change the values ​​- set the numbers in ascending order, from 120 to 200. Increase the value in the Max. Vol is maximum 200. Press the SET button to save the settings.

Audio: increase the volume of a phone call

To increase the speaker tone for conversations, under service menu Audio select Normal mode and open Sph. Set the values ​​for the signal levels (level 1–6) from 100 to 150, and the number for Max. Vol. - up to 160.

To increase the sensitivity of the microphone, go to the menu Audio - Normal mode - Mic. For each level, assign the same values microphone sensitivity, for example, 200. Press the SET button, reboot and check if the other person can hear you better.

Video: adjusting sound parameters in the engineering menu

Battery: cut off unused frequencies

Smartphones quickly drain battery life for running applications, maintaining cellular communication and network connections... Using the engineering menu, you can increase the battery life.

Modern devices scan several GSM frequencies - 900/1800 MHz and 850/1900 MHz. A pair of 900/1800 MHz operates in Russia, which means there is no need to scan the network at other frequencies. The radio signal for the second pair can be turned off, which will significantly save the charge level.

In Engineer Mode, open Band Mode. Disable unused frequencies by unchecking the corresponding items - PCS1900 and GSM850. If the device supports two SIM cards, open the items SIM1 and SIM2 one by one and follow the indicated steps in each. Press the SET button to save the settings.

If your smartphone and SIM card work in 3G networks, disconnect networks that are not used in Russia: WCDMA-PCS 1900, WCDMA-800, WCDMA-CLR-850. Press the SET button again.

You can enable scanning of disabled networks by returning to the same menu and checking the boxes.

Camera: photo and video settings

By default, Android devices save snapshots in JPEG format. In the meantime, photographers prefer to shoot and process their footage in RAW for more editing options. The technical menu allows you to select the desired picture format.

Find Camera in the menu and select Capture Type. Set the photo format to RAW and press SET. Also in the Camera menu, you can increase the size of images, set the ISO value, enable shooting in HDR for higher details of the photo, set the frame rate for video. After changing each parameter, remember to press SET to save the settings.

Recovery mode

Recovery Mode(Recovery mode) - analogue of Bios on a computer, allows you to control the device without entering Android system... Recovery Mode Features:

• resetting the settings to standard;
• firmware update;
• access to root rights;
• creating a backup copy of the OS;
• removal of personal data from the system.

In Recovery Mode, do not perform an action unless you are sure of what it will lead to. Some commands can damage the device and the system.

If the settings have not been saved

Users who have access to the technical menu complain that the parameters changed in it are not activated or are reset when the device is restarted.

To activate the settings after changing the parameters, tap on the SET button at the bottom of the screen. If the parameters are reset after restarting the device, try entering the technical menu not through the application, but using a digital command.

Service codes for devices on Android

In addition to the technical menu, secret USSD codes - combinations of numbers and symbols, by typing which the user performs an action - allow to control the functionality of smartphones on Android. Secret codes for different devices are given in the table.

Table: list of secret commands for Android

If for some reason the service code didn't work, don't worry - install and run the Secret Codes app (Google Play link: //play.google.com/store/apps/details?id=fr.simon.marquis.secretcodes&hl= ru). The program will analyze the combinations operating in the device and offer you a list. You can activate the combination directly in the application with one click on the name.

MASTER SECURITY CODE
309296
3092
9296

ANDROID secret codes for HUAWEI Honor 4C (Black)

DISCLAIMER: This information is intended for advanced users. It is not intended for common users, hackers or mobile thieves. We will not be held responsible for any use or misuse of this information, including loss of data or damage to equipment. So use these codes at your own risk and benefit.

Code: - * # * # 4636 # * # *
This code can be used to get information about your phone and battery. The following 4 menus are displayed on the screen:

* Phone information
* Battery information
* Battery history
* Usage statistics

Code: - * # * # 7780 # * # *
This code can be used to reset the factory settings. It will remove the following things:

* Settings Google account which are stored on your phone
* System and application data and settings
* Downloaded apps

This will NOT delete:

* Current system software and related applications
* SD card files such as photos, music files etc.

PS: After you enter this code, you will see a window asking you to click the "Reset Phone" button. Thus, you get the opportunity to cancel your operation.

Code: - * 2767 * 3855 #
Think before entering this code. This code is used for factory reset. It will remove all files and settings including internal memory... It will also reinstall the phone's firmware.

PS: After you enter this code, you will not be able to cancel the operation until you remove the battery from the phone. So think twice before entering this code.

Code: - * # * # 34971539 # * # *
This code is used to get information about the phone's camera. Shows the following 4 menus:

* Update camera firmware in image (do not touch this option)
* Update camera firmware on SD card
* Get camera firmware version
* Get Firmware Upgrade Counter
A WARNING. Never use the first option, otherwise your phone camera will stop working and you will need to take your phone to service center to reinstall the camera firmware.

Code: - * # * # 7594 # * # *
This code can be used to change the action of the End Call / Power button on your phone. By default, if you press the button for a long time, a screen will appear asking you to select any option from silent mode, airplane mode, and power off. You can turn on direct power off by pressing this button, so as not to waste time choosing.

Code: - * # * # 273283 * 255 * 663282 * # * # *
This code opens the copy files screen where you can do backup your media files, for example: photos, audio, video and voice notes.

Code: - * # * # 197328640 # * # *
This code can be used to enter the service mode. You can run various tests and change settings in service mode.

WLAN, GPS and Bluetooth Test Codes:
* # * # 232339 # * # * OR * # * # 526 # * # * OR * # * # 528 # * # * - WLAN test (Use the "Menu" button to run various tests)

* # * # 232338 # * # * - Shows WiFi MAC address The MAC (Media Access Control) address is also called the Hardware Address or Physical Address. This is a unique address that is assigned to all network adapters at the manufacturer's plant.

* # * # 1472365 # * # * - GPS test HUAWEI Honor 4C (Black)

* # * # 1575 # * # * - Another GPS test The Global Positioning System (GPS) navigation system is part of the NAVSTAR complex, which is designed, implemented and operated by the US Department of Defense. The development of the NAVSTAR complex (NAVigation Satellites providing Time And Range - navigation system for determining the time and range) was started back in 1973, and already on February 22, 1978, the first test launch of the complex was made, and in March 1978 the NAVSTAR complex began to operate.

* # * # 232331 # * # * - Bluetooth test HUAWEI Honor 4C (Black)

* # * # 232337 # * # - Shows the address of the Bluetooth device

* # * # 8255 # * # * - This code can be used to start GTalk Service Monitor.

Codes for getting information about the firmware version:
* # * # 4986 * 2650468 # * # * - PDA, Phone, H / W, RFCallDate

* # * # 1234 # * # * - PDA and Phone

* # * # 1111 # * # * - FTA SW Version

* # * # 2222 # * # * - FTA HW Version

* # * # 44336 # * # * - PDA, Phone, CSC, Build Time, Changelist number

Codes for running various factory tests:

* # * # 0283 # * # * - Packet Loopback

* # * # 0 * # * # * - LCD test

* # * # 0673 # * # * OR * # * # 0289 # * # * - Melody test

* # * # 0842 # * # * - Device test (Vibration test and BackLight test)

* # * # 2663 # * # * - Touchscreen version

* # * # 2664 # * # * - touch screen test

* # * # 0588 # * # * - Proximity sensor test

* # * # 3264 # * # * - RAM version HUAWEI Honor 4C (Black)

STANDARD GSM CODES HUAWEI Honor 4C (Black)
These codes, dialed from a GSM telephone, are used to enable and disable various standard functions and services. Some of them duplicate menu functions, some do not.

Legend:
@ = Send button (Handset, OK, YES, Navi)
** = enable or activate
* = active
## = turn off and deactivate
# = inactive

CHANGE PIN CODE HUAWEI Honor 4C (Black)
Change PIN 1 ** 04 * oldPIN1 * newPIN1 * newPIN1 # @
Change PIN 2 ** 042 * oldPIN2 * newPIN2 * newPIN2 # @
Unblock PIN 1 ** 05 * PUK * newPIN1 * newPIN1 # @
Unblock PIN 2 ** 052 * PUK2 * newPIN2 * newPIN2 # @

PUK - code that must be provided by the operator when buying a phone or connecting. In the absence of this code, or entering the wrong PUK ten times, your phone will be completely blocked!

SHOW IMEI HUAWEI Honor 4C (Black)
Show IMEI * # 06 # IMEI (from English International Mobile Equipment Identity) is a 15-digit international identifier for mobile gadgets. In fact, it is serial number, which is determined by the operator when the phone gets in touch.

If the code obtained by entering this command and the code on back cover phone number does not match, then your phone may be "gray".

CALL FORWARDING HUAWEI Honor 4C (Black)
Deactivate all types of call forwarding ## 002 # @
Deactivate all conditional call forwarding ## 004 # @
Activate all conditional call forwarding ** 004 * phone_number # @

FORWARDING ALL CALLS HUAWEI Honor 4C (Black)
Deactivate and Deactivate call forwarding to another number ## 21 # @
Deactivate call forwarding to another number # 21 # @
Set the number and activate call forwarding to another number ** 21 * phone_number # @
Activate call forwarding to another number * 21 # @
Check the status of call forwarding to another number * # 21 # @

FORWARDING IN CASE OF NO ANSWER TO CALL
Activate call forwarding to another number if the subscriber does not answer ** 61 * phone_number # @
Deactivate and disable call forwarding if the subscriber does not answer ## 61 # @
Deactivate call forwarding if the subscriber does not answer # 61 # @
Activate call forwarding if the subscriber does not answer * 61 # @
Check the status of call forwarding if the subscriber does not answer * # 61 # @

REDIRECTION IF THE SUBSCRIBER IS OUT OF THE COVERAGE AREA
Activate call forwarding to another number if the subscriber is outside the coverage area ** 62 * phone_number # @
Activate call forwarding if the subscriber is outside the coverage area * 62 # @
Deactivate and turn off call forwarding if the subscriber is outside the coverage area ## 62 # @
Deactivate call forwarding if the subscriber is outside the coverage area # 62 # @
Check the status of call forwarding if the subscriber is outside the coverage area * # 62 # @

DIRECTION IF THE PHONE IS BUSY
Activate call forwarding to another number if the phone is busy ** 67 * phone_number # @
Activate automatic call forwarding if the phone is busy * 67 # @
Deactivate and deactivate call forwarding if the phone is busy ## 67 # @
Deactivate call forwarding if the phone is busy # 67 # @
Check the status of automatic forwarding if the phone is busy * # 67 # @

SETTING THE NUMBER OF RINGS BEFORE ACTIVATING DIRECTION
N = 5-30 (seconds)
Set the number of rings ** 61 * Voicemail number ** N # @
Cancel previous installation ##61#@

Change barring password ** 03 * 330 * old Password * new Password * new Password # @
Activate barring of all outgoing calls ** 33 * Password # @
Deactivate barring of all outgoing calls # 33 * Password # @
Check the barring status of all outgoing calls * # 33 # @

BAN ALL CALLS HUAWEI Honor 4C (Black)
Activate barring of all calls ** 330 * Password # @
Deactivate barring of all calls # 330 * Password # @
Check the status of barring all calls * # 330 * Password # @

BAN ON ALL OUTSTANDING INTERNATIONAL CALLS HUAWEI Honor 4C (Black)
Activate barring of all outgoing international calls ** 331 * Password # @
Deactivate barring of all outgoing international calls # 331 * Password # @
Check the barring status of all outgoing international calls * # 331 # @

BANGE ALL OUTGOING CALLS HUAWEI Honor 4C (Black)
Activate barring of all outgoing calls ** 333 * Password # @
Deactivate barring of all outgoing calls # 333 * Password # @
Check the barring status of all outgoing calls * # 333 # @

BANGE ALL INCOMING CALLS HUAWEI Honor 4C (Black)
Activate barring of all incoming calls ** 35 * PW # @ or ** 353 * Password # @
Deactivate barring of all incoming calls # 35 * PW # @ or ** 353 * Password # @
Check the barring status of all incoming calls * # 35 # @ or * # 353 # @

BANNING ALL INCOMING CALLS WHEN ROAMING
Activate barring of all incoming calls when roaming ** 351 * Password # @
Deactivate barring of all incoming calls when roaming # 351 * Password # @
Check the barring status of all incoming calls when roaming * # 351 # @
Activate call waiting * 43 # @
Deactivate call waiting # 43 ## @
Check call waiting status * # 43 # @

SENDING or BANNING SENDING YOUR PHONE NUMBER WHEN CALLING
Disallow sending your phone number # 30 # phone_number @
Allow sending your phone number * 30 # phone_number @
Check the status of sending your phone number * # 30 #

CODES FOR SENDING / PROHIBITED NUMBER IDENTIFICATION FOR INCOMING CALLS
Prevent the display of the caller's number on your phone * 77 #
Allow the display of the caller's number on your phone # 77 # @
Check the display status of the caller's number on your phone * # 77 # @

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