How to enter the engineering menu. How to enter the Android engineering menu. List of special codes

Alexander Grishin


Engineering menu Meizu M3 is used to fix software glitches, as well as to configure the smartphone after repair. Most of the features offered in this menu will not be needed in practice even by the most advanced users. In this instruction we will tell you how to open an engineering account. Meizu menu and about its main functions.

How to open

To get to the engineering menu (EngeneerMode) you should type the combination on the keyboard

*#*#3646633#*#*

It is made for Android 4.0, so it looks quite outdated. But, at the same time, there should not be any difficulties in understanding the interface.

In total, Meizu M3 and M3 Note have several additional tabs for configuration:

  • Telephony;
  • Connectivity;
  • Hardware Testing;
  • Location;
  • Log and Debugging;
  • Others.

Let's look at them in more detail.

Telephony

Here you can run tests on your smartphone modem. There are also several positions for setting up calls. You can see the compatibility of the device with operators. It’s better not to go into this without knowledge, but as a last resort there is a reset button for the changes made.

Connectivity

Produced here Wi-Fi setup. You can also see how Bluetooth is configured and correct it if necessary.

Hardware Testing

Here you can find a large number of options for setting up hardware, you can adjust the display, test modules. But the most popular option is to adjust the sound volume in the headphones.

Location

Makes it possible to disable the location function.

Log and Debugging

Others

There are a large number of items here that are not included in the main menu, but may also require settings. You can change fonts, sensor response speed, languages ​​and much more.

In conclusion, we note that without special knowledge it is better not to change anything in the engineering menu, otherwise you can ruin the normal operation of the Meizu smartphone.

Few people know, but in Android there is a menu of advanced settings, the so-called “Engineering menu”. And if anyone has heard about this, they may not know how to enter this very menu on Android. It is in this article that I want to tell you how you can get into this section.

Engineering Codes for Android: Video

How to get to the Engineering Menu

Entering this menu on Android 4 occurs by entering a special key combination in the dialer, the so-called code; each manufacturer usually has its own combination. So, you need to go into the dialer and dial:

After typing the code, the “Engineering Menu” should open immediately, but if this does not happen, you should try pressing the call button.

What features are available

After logging in, a large number of settings will be available (for advanced users). One of the simplest is changing the volume at each level, that is, you can specify what volume will be at the 1st level, what at the 2nd and so on. This will be useful for phones whose standard volume is too quiet, making the value at the last level higher than usual. I suggest you look at everything using an example.

  • Then select the “Engineer Mode” section
  • Since we need to change the volume value, select “Audio”
  • Next you will need to experiment with the values; as a rule, the numbers can be set from 0 to 160. Where 0 is no sound at all, and 160 is the maximum volume.

Also, you can make many other changes, in theory, almost the entire functional part, for example, adjust the vibration strength of the phone, the reception strength of the radio module, and much more. If you like to experiment, then there is just something to have fun with, just be careful when changing the values, because in the wrong hands, you may not customize the device for yourself, but on the contrary, only make it more inconvenient to use.
This is actually the entire manual on how to get to the advanced settings menu on Android 4. Nothing complicated!

Often in Chinese (and probably not only Chinese) phones Android based in the engineering menu they are set far from optimal settings volume of the speaker, headset (headphones) and microphone, their correction will be discussed in this article.

How to get to the engineering menu of an Android phone

To get to the engineering menu, open the dialer and enter special code: *#*#3646633#*#*

Also on some versions of Android the command may work *#15963#* and *#*#4636#*#*

If your phone's processor is not MTK, then different options are possible.

I will give the codes known to me for opening the engineering menu on different phones and tablets:

*#*#54298#*#* or *#*#3646633#*#* – smartphones based on MTK processor

*#*#8255#*#* or *#*#4636#*#* –Samsung smartphones

*#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* – HTC smartphones

*#*#7378423#*#* – Sony smartphones

*#*#3646633#*#* – smartphones TEXET, Fly, Alcatel,

*#*#3338613#*#* or *#*#13411#*#* — Fly smartphones, Alcatel, Philips

*#*#2846579#*#* or *#*#2846579159#*#* – Huawei smartphones

*#*#2237332846633#*#* - devices from Acer

Immediately after entering, the command should disappear and the engineering menu should open. But on some devices you will still need to press the “Call” key

A list of sections of the phone's engineering menu will appear.

Just in case, take a notepad and pen and take note of the settings that were set on your phone before your intervention. You never know, anything can happen.

On my phone (based on an MTK processor), in order to get to the engineering menu I had to install free utility(program) from Google Play « Mobileuncle MTK Tools“, which opens access to the engineering menu (that is, it works similarly to dialing the magic combination *#*#3646633#*#*).

I'm sure you'll find it there too free apps and for other phones.

Volume settings for the speaker, headset (headphones) and microphone of the phone through the engineering menu

For clarity, let’s briefly look at setting the device’s volume level:

We go into the program or dial the magic combination to enter the engineering menu. Next, in the menu that opens, select the section “ Engineer Mode»

A section will open in which you can select the engineering menu of the Android system (we skip it), and the engineering menu of the phone itself.

We need the phone’s engineering menu, so select the “Engineer Mode (MTK)” section. This point is circled in the figure with a red marker.

A very long menu will open, through which you can get to almost any phone settings. But it’s not enough to get to them, you need to know how to manage them.

Therefore, do not change what you have no idea about.

At worst, write down the parameters that were before your intervention, so that you can return them back later. Let's continue!

Since we are interested in adjusting the sound level, select the “Audio” item, I circled it with a red marker.

And... magic! The menu of interest to us for setting the parameters of the speakers and microphone opens.

Why did we actually go into this menu? Doesn't something work like that out of curiosity? Okay, let's continue to figure it out!

It’s worth stopping here and figuring out what all these menu items mean.

Normal Mode(Settings section in normal or normal mode) – this mode is active when nothing is connected to the smartphone;

Headset Mode(headset mode) – this mode is activated after connecting headphones or external speakers;

Loud Speaker Mode(speaker mode) – it is activated when nothing is connected to the phone or tablet, and you turn on the speakerphone while talking on the phone;

Headset_LoudSpeaker Mode(speaker mode with a headset connected) – this mode is activated if you connect headphones or external speakers to your phone or tablet, and you turn on the speakerphone while talking on the phone;

Speech Enhancement(phone conversation mode) – this mode is activated in the normal mode of telephone conversations, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.

Debug Info– it’s not clear why – information on backing up information or debugging it;

Speech Logger– I haven’t fully figured it out, most likely it was logging during negotiations or recording the conversation. If you check the box next to “Enable speech log”, then after completion phone call The corresponding files are created in the root directory of the memory card. Their name and structure take the following form: Day of week_month_year__hour_minutes_seconds (for example, Friday_July_2016__time17_12_53.pcm).

What these files serve and how they can be useful to us is unclear. The /sdcard/VOIP_DebugInfo directory (which is the storage location for files with backup information) is not created automatically; if you create it manually, it will remain empty after the conversation.

Audio logger– used to record sound that supports quick search, playback and saving it.

When you enter any of the modes, you will have access to different volume settings (Type). Here is a list of basic settings you need to know:

  • Sip – settings for Internet calls;
  • Mic – microphone sensitivity settings;
  • Sph – earpiece speaker settings (the one we put on our ears);
  • Sph2 – settings for the second speaker (I don’t have one on my phone);
  • Sid – skip, if you change these parameters during negotiations on your smartphone or tablet, you can hear yourself instead of your interlocutor;
  • Media – adjust the multimedia volume level;
  • Ring – adjust the volume level of the incoming call;
  • FMR – FM radio volume settings.

Under the settings selection item, a list of volume levels (Level) is available (see figure).

There are usually 7 such levels, from level 0 to level 6. Each such level corresponds to one “click” on the volume rocker of your smartphone or tablet.

Thus, level 0 is the quietest level, and level 6 is the loudest signal level. Please note that each level can be assigned its own values, which are located in the Value is 0~255 cell. They should not go beyond the range from 0 to 255 (the lower the value, the quieter the volume).

To change this parameter, you need to erase the old value in the cell and write a new one, and then press the “Set” button (the one next to the cell) to assign.

Finally, at the bottom you can see the Max Vol section. 0~255 (on my smartphone, for example Max Vol. 0~255, it all depends on the manufacturer). This item sets the maximum volume level; it is the same for all levels.

Dear friends. The names of the items may differ on different models. This is an MTK platform, so be prepared to rack your brain and look for a match in your menu. I have a Jiayu G3 phone.

For me the changes were applied immediately, but someone may need to restart the phone for them to take effect.

Although, it seems like you shouldn’t break anything, and if you don’t like the changes, you can always enter the old value..
But still..
YOU MAKE ALL CHANGES AT YOUR OWN RISK!!! Don't forget to turn on your thinking!

P.S.: I found a font size setting on my phone. It turns out you can increase it MORE!
P.P.S.: if something is still not clear, here is a video on setting up sound in the engineering menu:

Not many people know about the existence of an engineering settings menu in devices based on Android OS. They can significantly expand the functionality and change many parameters, such as sound volume, camera settings, etc. To enter the Android engineering menu, you need to enter a special combination of characters in the dialing line telephone number. Moreover, each manufacturer has its own service code, consisting of numbers and symbols “*” and “#”. Let's consider the main issues related to the hidden engineering menu of the phone settings: how to enter, how control is carried out and capabilities.

The developers carefully check and calibrate each of their devices, so in most cases the user does not have to change any settings himself. But in some situations, you may need to make slight adjustments to certain parameters, such as the sensitivity of the built-in microphone or increasing the volume of the polyphonic speaker. Engineering is designed specifically for such cases. Android menu, which can only be accessed by entering a specific combination of characters. Please note that changing these settings is recommended only in special cases, as this may be dangerous for your phone. Therefore, only experienced users are recommended to enter the engineering menu on Android.

How to enter the menu?

In most cases, a special combination of numbers and symbols is used to enter the engineering menu. They must be entered in the line to dial the phone number. If your phone's processor is not MTK, then depending on the manufacturer's brand, the following engineering menu codes in Android are possible:

  • Samsung. For phones of this brand, there are two options: *#*#8255#*#* or *#*#4636#*#*.
  • NTS. Depending on the OS version and model, the following combinations can be used: *#*#3424#*#*, *#*#4636#*#* and *#*#8255#*#*.
  • Sony. Dial: *#*#7378423#*#*.
  • Huawei. Depending on the model, the following combinations are used: *#*#2846579#*#* or *#*#2846579159#*#*.
  • Lg. By typing the combination 2945#*# on most smartphones of this brand, you will be taken to the 1st engineering menu and can read the instructions for use.

For most Chinese smartphones such as Lenovo, Acer, Prestigio, etc. You can open the engineering menu using the code *#*#3646633#*#*. Immediately after entering the desired combination in the line for the phone number, it will disappear and open service mode settings. If this does not happen, then you need to start it by pressing the call button. It is recommended to remember or write down the value of the initial parameters that will be configured. Also, before getting into the engineering menu, remove all running applications and active processes.

An alternative way to enter the engineering menu

Some phones and tablets have a separate program for this, which you need to download from the Google branded store - the playmarket. Having launched it, the user is taken to the section service settings your device, the same as when dialing a code. For example, you can download the launch of the mtk engineering menu, the Mobileuncle MTK Tools application, which is designed specifically for devices with the appropriate processors. Another way to enter the developer menu for owners of such smartphones is to enter the code *#*#3646633#*#*. We recommend watching a training video that shows how to open the service settings mode on various brands Android smartphones 5 and below.

Engineering menu options

A user who has access to the service settings mode in Android has extensive opportunities to expand the functionality of their device. Through the engineering menu the following become available:

  1. Determination of the level of harmful radiation.
  2. Testing available types wireless connection, such as Bluetooth, Wi-Fi, etc.
  3. Checking the GPS signal strength on Android and determining the exact location.
  4. Audio setup. Set the sound level for speakers, headphones and microphones.
  5. Camera settings.
  6. Testing central processor, video accelerator, flash and RAM.
  7. Detailed description of the battery.
  8. Testing mirco SD card.
  9. Examination micro USB port.
  10. Temperature sensor. Shows battery and CPU heating.

Depending on the device used, the list of options presented above when entering the engineering menu may vary. Accordingly, the more sensors and modules a smartphone has, the more settings it has.

Let's look at how to change the volume settings using the example of a smartphone with an MTK processor. Before you open the required service you must enter a combination of characters to enter engineering mode. A long list of settings will open, among which you need to find the “Audio” item and click on it. After this, a menu will appear with several modes: when nothing is connected to the phone, a headset is connected, the speaker is on, etc. For each of these modes, more than 5 points are available for adjustment.

To change parameters, you need to erase the old value in the desired cell and write a new one, and then click on the “set” button. The assigned value must not fall outside the range specified in parentheses. It is also not recommended to use the maximum available value, as this will distort the sound.

Android service codes

In order to quickly test your device for the functionality of basic functions and sensors, special Android codes. You need to enter them, as to enter engineering mode, in the line for dialing a telephone number. Since most of the combinations are the same for all models and brands of smartphones, we present the general and most important ones in the following list:

  • *#*#4636#*#* - general information about the phone, battery status and usage statistics.
  • *2767*3855# — full reset settings, hard reset.
  • *#*#34971539#*#* - detailed camera specifications.
  • *#*#2664#*#* — Android touchscreen calibration.
  • *#*#232331#*#* — bluetooth test.
  • *#*#8351#*#* — enable voice dialing registration mode.
  • *#*#1111#*#*, *#*#2222#*#* — viewing FTA software and hardware versions.
  • *#*#0*#*#* — display test.
  • *#*#0673#*#* - audio test.

It is also worth noting that for some brands there are additional combinations, for example for displaying the EPST menu and testing functionality. IN modern models Samsung phones, such as Galaxy s6, the diagnostic menu can be opened by dialing *#0*#. And Motorola devices have built-in secret menu. Before turning it on, you need to enter the combination *#*#4636#*#*.

The engineering menu provides access to manual setting the “hardware” part of the smartphone. To enter you need to enter a special code or install an application, but there are a number of features that are worth paying close attention to. If you were unable to enter the engineering menu the first time, then you did not take into account the features of the device. It is worth immediately clarifying that any interference with the operation of the device may lead to its inoperability and loss of warranty.

Hidden capabilities of the system

At the last stages of setting up a smartphone, developers test the system for errors and check the operation of all sensors on the device. Especially for this purpose, a special subroutine is built into Android - an engineering menu that provides access to hidden settings Android OS allows you to reconfigure them yourself. In addition, the menu contains detailed information about the device. The full list of menu options is known only to the platform developers, so you should make your changes with caution.

Secret paths of developers

To enter the engineering menu, dial the code *#*#3646633#*#*. On some models, you additionally need to press the call key. It is worth considering the features of phones: for different brands there are different combinations of numbers. Android version does not affect the functionality of the engineering menu.

Enter a special code to enter the engineering menu

If no problems arise, you will be taken to an additional menu for fine-tuning your smartphone.

Enter the menu subsection

Depending on the system version and processor model, the engineering menu may be incomplete or missing. In the photo above there is a subsection of the menu with elements for testing smartphone sensors, setting up a USB connection, and performing internal and external memory tests.

If it doesn't work out the first time

Not all devices can access the engineering menu. Let's look at a number of common problems and ways to fix them.

Android is difficult operating system Unix based. If you can’t do something, you haven’t taken into account all the nuances of the functioning of a particular subroutine.

List of special codes

One of the common reasons for blocking entry to the engineering menu is an incorrect special code. The combination of numbers depends not only on the device model, but also on the type of processor. For example, most devices based on the MTK chip are equipped with an engineering menu. If we talk about Qualcomm, not all smartphones based on this platform have an engineering menu built into them. The list of combinations is given in the table. If you don't find the one you need, try entering a different combination.

Table: code options for different Android models

DIY engineering menu

If none of the special codes work, don’t worry. There are many applications on the network with engineering menu functionality. It is worth noting that the MTK prefix in the names eloquently indicates compatibility only with MediaTek processors.

The first option is Mobileuncle MTK Tools. In this program, in addition to required set There are several settings additional functions: firmware update, recovery update, GPS receiver enhancement mode and much more.

Mobileuncle MTK Tools provides a set of settings

Another program is MTK Engineering Mode. The program completely replicates the standard engineering menu.

MTK Engineering Mode repeats the standard engineering menu

For those whose device is not equipped with an engineering menu, there is another option: installing third-party firmware. Assemblies from third-party developers often contain a wide range of customization settings.

Where to begin

When you first enter the menu, you can get lost in the jungle of parameters.

Engineering menu settings

Settings open up enormous possibilities for users.

Depending on the hardware platform, some items may not be available or may be missing.

In this section you can configure settings mobile communications.

  1. Auto Answer. You can enable or disable automatic answering of an incoming call.
  2. Band Mode. Allows for manual mode choose frequency range for GSM module operation. You will see all technologies and frequencies for them supported by your smartphone model. If you wish, you can uncheck bands that are not used by your carrier. This will significantly save battery power. To save the settings, press the set button.
  3. CFU Setting (Call forwarding Settings). The option enables or disables conditional forwarding. It must be supported by the operator.
  4. AT Command Tool. A utility for developers that supports AT commands. This menu item will be of interest to programmers and developers. Using this menu, you can perform various queries directly to the system without visual add-ons.
  5. Modem Test. Configuring compatibility of the “access point” option with various types connected devices.
  6. Network Selecting. Here you can select mobile communication standards (GSM, WCDMA, LTE). For additional energy saving, turn off unused ones.
  7. NetworkInfo. Select one or more options to display information about the status of parameters cellular communications. Once selected, open the additional menu (three dots in the upper right corner) and click Check Information. This option is convenient for checking the quality of cellular operator services.
  8. GPRS. Setting up a connection to the mobile Internet, selecting an active SIM card (if there are several of them).
  9. HSPA Info. Information about the 3G network if supported by your mobile operator.
  10. Mobile data service preferred. The Internet will be given priority over voice traffic to increase data transfer speeds. Incoming calls may not go through.
  11. Fast Dormancy. Allows you to save battery energy in third generation networks. The option must be supported by your telecom operator.
  12. RAT Mode (Phone Info). Allows you to select the priority communication standard. You should change the parameter carefully, it blocks the settings of the Network Selecting item.
  13. RF De-sense Test. You can select a frequency range and a specific channel to check the communication quality.
  14. SIM ME Lock. This subsection allows you to configure the regional parameters of the GSM module (MNC, NCC) manually.

Photo gallery: mobile communication parameters

We get to the main window of the subsection Enable or disable auto answer Enable or disable conditional forwarding Configure the “Modem” mode Display information from the GSM module Configure Mobile Internet Select the priority of the connection type Configure the operation of the 3G mode Select the type of mobile connection Check the network power Configure regional communication parameters

Wireless interfaces

This section is intended for testing wireless data transmission modules (Wi-Fi, Bluetooth, FM).

  1. Bluetooth. A wide range of settings and tests for the module of the same name in order to check the reception and transmission of data, and start the debugging mode.
  2. CDS Information. Information about the parameters of wireless interfaces.
  3. FM Receiver. Checking the FM module of the device.
  4. Wi-Fi. Testing the module for transmitting and receiving information on the specified frequency channel.
  5. Wi-Fi CTIA. Recording logs of wireless technology tests.

Photo gallery: wireless data transmission

Select the section for checking the device’s wireless modules Check the bluetooth operating mode Find information about the wireless interfaces Configure the FM module Check the operation of the WiFi module Write data about checking the WiFi module to a log file

  1. Audio- fine tuning sound playback settings.
  2. Camera - a set of parameters for taking photos and videos that are not included in the Camera application.
  3. Driving Current Camera - takes current readings from the sensor in the camera circuit.
  4. CPU Stress Test - performing tests of all subsystems of the central processor.
  5. Deep Idle Setting - disable sleep mode in standby mode.
  6. Sleep Mode Setting - sleep mode settings.
  7. ChargeBattery - View battery information.
  8. Sensor - sensor calibration.
  9. Multi-Touch - checks the number of available points for simultaneously pressing the screen.
  10. Location Engineer Mode - checking the parameters of the GPS module.

Photo gallery: equipment testing

Go to the section for checking electronic components Adjust the volume of the conversation speakers Adjust the camera's power supply Adjust the standby mode Adjust the frequency of the central processor Adjust the sleep mode View information about the battery Configure touch screen Checking the capabilities of the multi-touch function Setting up the GPS module

Adjusting the speaker volume

In the subsection you can adjust the overall volume level, headphone and speakerphone volume.

You should be careful when changing volume settings. All parameters are individual for specific model devices. Incorrect configuration may result in poor hearing performance.

There are a number of general parameters:

  1. MaxVol - general volume level. The range of values ​​is from 0 to 160. The higher the number, the higher the volume.
  2. Sph - volume during a telephone conversation.
  3. Mic - microphone sensitivity.
  4. Ring - speaker volume for incoming calls.
  5. Media - volume level when watching movies, listening to music and playing games.

Very often, users are unhappy with the speaker volume during a conversation. To improve audibility, go to the Normal Mode menu and change the Sph parameter to 150. If the phone rings quietly when there is an incoming call, then you need to increase the value of the Ring parameter. We advise you not to set the value above 200, as this may damage the speaker. To make you better heard, change the Mic parameter from 100 to 172. This will increase the sensitivity of the speaker.

ROOT is a panacea for a smartphone

On a smartphone without root rights functionality The engineering menu is limited: some items are not displayed, changes made are not saved. Any interference with the operation of a smartphone requires open access to the system. Don't forget that gaining root access can damage your gadget and will void the device's warranty. We strongly recommend doing backup important information to a memory card and synchronize with your Google account and remove it to avoid data loss. To unlock full access to the system, you can use one of the existing methods.

Installing the application directly on the device (KingRoot)

Superuser access can be opened from a smartphone using special programs. Let's look at the sequence of operations using the KingRoot program as an example:


After this, you can safely change the parameters in the engineering menu, all changes will be saved. If the result is negative, we move on to the next method.

Obtaining superuser rights via PC (Kingo Root)

This method is slightly different big amount preparatory activities:


The engineering menu is used to configure the device and test the operation of the hardware. This is a built-in subroutine of the system, which is an indispensable tool for both experienced users and newcomers to the world mobile devices. However, it should be noted that manipulations with the engineering menu can render the gadget inoperative.