How to enter the Android service menu. How to correctly enter the engineering menu on Android: step-by-step instructions

To ensure that software developers and testers mobile devices could obtain some system information and debug smartphone functions, Android OS contains some hidden possibilities. Among them are connecting to a PC in developer mode, viewing detailed information about networks and hardware, etc. One tool for this is engineering menu.

The engineering menu is a special settings menu that contains tools for testing and calibrating smartphone hardware. By default, it is hidden, and in order to get into it, you must perform a certain procedure. Appearance The engineering menu differs on different smartphones, depending on the manufacturer and SoC model. The customization options will also be different.

There are several ways to enter the engineering menu, which differ depending on the smartphone manufacturer and chipset model. You can first try entering one of the codes in the dialer application:

• *#*#3646633#*#* - smartphones with
• *#*#6484#*#* - some smartphones with Qualcomm;
• *#*#54298#*#* - some smartphones with MediaTek;
• *#0*# - some Samsung smartphones;
• *#*#7378423#*#* - some Sony smartphones;
• *#*#4636#*#* - on some devices opens only the network menu;
• *#*#2846579#*#* - some Huawei devices.

If none of the codes help, on your smartphone with MediaTek you should install the program “Launch MTK Engineering Menu” from the market. On Xiaomi devices, you can enter the menu by going to “Settings”, selecting “About phone” and then clicking the “Kernel version” line five times in a row.

What can be configured on a smartphone in the engineering menu

Engineering menu on different platforms is different, in many cases it only allows you to test some parameters. On Xiaomi Redmi Note 3 Pro and Note 4X, built on Qualcomm chips, the engineering menu allows you to test various functions. These include the screen, sensor, sensors, cameras, sound and microphone, communications, battery, navigation, etc. There is no way to change anything, you can only find out if everything is working correctly.

There are much richer opportunities on the MediaTek platform. In Oukitel U7 Plus (MT6737 chipset), the engineering menu allows you to configure network, sound, communication modules, and other modules. On Redmi Note 2 with MTK Helio X10, the menu was identical, and on other devices with MTK it is not particularly different. We will use his example to describe the possibilities.

Telephony tab

This section is responsible for configuring the modem cellular communication. Here, interesting possibilities are provided by the BandMode, Network Selecting and GPRS options.

BandMode

In this menu, you can select communication standards that will be active on the phone when connecting to mobile networks. In the menu item, you can select frequency ranges for each SIM card; if there are two SIM cards, the full list is usually available only on the main one (usually the first one). Once you know exactly which frequencies your operator uses in the region, you can uncheck all the others. This will increase the time slightly battery life due to the fact that the device will not search for operator towers in these ranges, wasting extra energy on scanning the airwaves.

Sometimes some communication standards (especially LTE) are supported at the chipset and core level, but are disabled in the firmware. By checking the box next to them, you can activate support for these networks. It is worth warning that it does not work everywhere: on the same Redmi Note 2 ( Chinese version) this way TDD-LTE was enabled, but on Oukitel U7 Plus these items are not activated.

Network Selecting

The name speaks for itself: this item is also responsible for selecting networks. Only in in this case the user can choose which types of networks to use. The goal is the same as in the previous paragraph: to reduce the load on the cellular modem, thereby reducing battery consumption. You can choose to work only in 2G, 3G, 4G, or combine several standards.

If your operator does not have 3G or 4G at all, these items can be disabled so that the smartphone does not constantly try to search LTE networks, thereby accelerating battery drain. You can also disable 3G and 4G if you need constant communication (for example, for correspondence over the Internet), but traffic is limited and uncontrolled use of WCDMA and LTE by background processes can quickly waste it.

GPRS

Despite the name, this item is not interesting because of the GPRS communication settings, which many people no longer need, and it is not recommended for “mere mortals” to change the settings themselves. Main feature is an opportunity to record Smartphone IMEI. In the appropriate paragraph you can enter identification number device and click Write to save it.

The ability to write IMEI is often required after an unsuccessful flashing, when it “flies” and the device cannot register in the operator’s network. By copying this code from the smartphone box, you can restore functionality. Attention! illegally changing the IMEI of a smartphone in many countries (including Russia, Ukraine) is a crime! In addition, by rewriting this code to a random one belonging to another subscriber of your operator, communication problems may occur due to a hardware conflict. Therefore, we recommend that you always keep the box or sticker with IMEI in case unsuccessful firmware. After all, on devices with non-removable lid This identifier is not written under the battery.

Connectivity Tab

This tab provides testing and fine tuning Bluetooth module, radio and Wi-Fi. The vast majority of users have nothing to do here, since there are no settings interesting for a layman, but it’s easy to disrupt the normal operation of Bluetooth by entering something wrong.

Hardware Testing Tab

This settings item in the engineering menu is responsible for the hardware configuration. The Audio and TouchScreen items are of interest to users. The latter contains HandWriting and MultiTouch items. It’s easy to guess what these parameters are responsible for.

Using the first one, you can check the clarity of the touchscreen response and check for the presence of “blind spots”. This menu is especially useful when purchasing a smartphone, in particular, without a warranty. The second point allows you to do the same, but with the participation of several fingers. With it you can test how well the smartphone processes gestures of several fingers simultaneously.

Audio

It is this treasured item that is needed by those who are looking for how to increase the volume in the engineering menu. The top items allow you to control the volume of the device and are responsible for different modes.

Normal Mode is a mode for normal use, with music or video sounds output to the music speaker. Headset Mode is responsible for controlling the volume in the headphones. LoudSpeaker mode allows you to adjust the conversation volume when using speakerphone. The last item is a combined one; it is responsible for speakerphone when headphones are connected. In order to change the sound in the engineering menu, you need to select which device you want to configure.

• Sip - settings for Internet telephony;
• Mic - microphone sensitivity
• Sph - conversational speaker;
• Sph2 - second earpiece (a rare beast among smartphones);
• Sid - after changing this parameter, an echo of your voice may appear during a conversation, so you do not need to touch it;
• Media - a multimedia speaker, what most people need.

In order to adjust the volume, you need to go to the required mode (for the volume of a multimedia speaker this is Normal Mode), select the Media item and set the volume value in the specified range.

The Level parameter is responsible for the volume value set by the rocker at each division. Level 0 is the minimum value (one division), the highest Level is all divisions, on Oukitel U7 Plus it is 14, on other smartphones it may differ. The value can range from 0 (speaker silent) to 255 (full volume). There is no particular point in changing the value, but if after a certain division it seems to you that the sound suddenly becomes much quieter, you can for this division (and more low levels) increase the values ​​by a couple of units. The main thing is that the conditional Level 6 does not turn out to be louder than Level 7 due to the value being too high.

But to increase the maximum volume in general, you need to change the value in the Max Vol item. Maximum level The corresponding value is 160, but manufacturers often set it lower (on the tested device it was 128). By setting the number higher, the volume will increase, but there may also be side effects such as gurgling, noises and wheezing. The optimal value should be selected using the scientific method: increase the value by several units, save, check the sound on video or music, and if everything is fine, increase it further.

Conclusion

It’s worth repeating once again that the engineering menu is different on different smartphones. What is available on the MediaTek platform cannot be done on Qualcomm. Login codes hidden settings may also not be suitable in some cases; we cannot guarantee their 100% performance. In addition, everything you do with your smartphone is done at your own peril and risk, since incorrect settings can affect its performance. In such cases, only a general reset or flashing will help. So if you really want to experiment with settings whose meaning you don’t fully understand, it’s advisable to take screenshots before doing so, so that if something happens, you can enter the factory values.

A beginner who buys a smartphone or tablet based on the Android operating system, after a while, feels the need to reconfigure something in it or adjust it more precisely. Entering the Android engineering menu is simple: you just need to know the special commands.

The hidden engineering menu in Android devices allows you to manage system settings of your smartphone or tablet that are not available in the standard menu. For example, they allow you to increase the speaker volume during calls, forcefully select the frequency range of the network being used, enable a photo or video format that is not in the main camera settings, etc.

Parameters configured in the engineering menu

Using the engineering menu you can access functions such as:

• speaker or headphone volume;
• improved speech recognition;
• microphone sensitivity;
• voice quality when making calls;
• forced cellular network selection mode: “GSM only”, “WCDMA only”, “LTE only” (some network modes may not be available in the standard settings);
• binding to one base station, frequency or channel number;
• choice of technology and cellular data speed;
• testing and overclocking the processor;
• enable/disable sleep mode;
• testing Wi-Fi and Bluetooth radio modules;
• auto switching 2G/3G/4G in sleep mode;
• camera test drive;
• changing the photo format (default is JPEG or PNG);
• fine-tuning the display brightness and its response to illumination;
• locking/unlocking auto answer settings for incoming calls;
• improved GPS performance;
• full “reset”, including factory formatting of the smartphone;
• testing and setting motion sensors;
• testing color rendering on the display;
• testing and setting up vibration alerts;
• backup of multimedia files;
• level determination harmful radiation(SAR) on a single device;
• FM radio settings and behavior.

Video: options for customizing a smartphone through the engineering menu

Commands for accessing menus

Commands for accessing the engineering menu vary depending on the manufacturer. There are also general commands for everyone Android versions, allowing you to configure individual device functions.

Main codes for entering the engineering menu

The commands you enter differ for different brands devices - select those that are suitable. It is not forbidden to check everything - commands that do not correspond to a specific manufacturer simply will not work.

Table: commands for accessing the engineering menu of various manufacturers

Google Commands for Android OS

Factory service Android codes, showing technical information about the device, often have no connection to the manufacturer. Basically, they are all built into Android by default. Command “numbering” range agreed upon by Google- as the creator of the Android operating system - with manufacturers of tablets and smartphones.

Table: Android factory service codes

The most popular service codes of the engineering menu

The most popular codes that allow you to change smartphone settings through the engineering menu do not depend on the phone brand or Android version.

Table: service codes for changing phone settings

When using commands, keep the following in mind:

• By updating the camera firmware through the engineering menu, you can find out about the version of this firmware and the number of its updates - and also save this update to an image in the internal memory and on the SD card. It is not recommended to reflash the camera again - if it fails, you will simply ruin it;
• When you reset your Android system and delete all Google user data, a message asking you to confirm the reset will appear on the screen.

How to enter the engineering menu

To get to the engineering menu, follow these steps.

Video: how to open the engineering menu on Android

What to do if you can’t enter the menu

It happens that none of the commands intended for a specific brand of device is suitable - this is not the manufacturer’s protection. experienced users from not fully thought out actions. Some manufacturers, after software debugging of a smartphone, completely remove the engineering menu, and all of the above commands simply do not work. For example, Samsung does this. Some of the commands entered can harm both the Android software and the device itself.

Often, instead of general service teams more specific ones work. If, despite all your attempts to “reach out” to the engineering menu, none of the service codes work, you need special applications.

Install the free Mobileuncle Tools application - it will distinguish between hardware and system settings. You may need to obtain Root access on Android. There are other applications: EngModeMtkShortcut, BetterCut, etc.

How to save settings

In order for the settings made using the Android engineering menu to be saved, you need to exit it correctly. While in any section of the engineering menu, use softkey“Back” either in the menu itself, or press the cancel call button or the “Back” key under the display - it is indicated as a reversal arrow - to go to a higher level of the engineering menu.

It is not recommended to set the value of any setting and confirm it with the Set key, turn off or reboot the smartphone by pressing the power button, remove the battery from the device, etc. Exiting the engineering menu can involve pressing - sometimes holding for a few seconds - the same “Back” key below the display. When you exit the engineering menu, a message will appear on the smartphone screen asking you to save the settings you have made - confirm it. There are tips on some of the sections of the engineering menu:

The reason why the engineering menu still does not save the settings may be “raw” firmware. Find out which Android versions and builds are right for your device. If you have a branded smartphone with a version of Android that has preinstalled programs and components from Beeline, MTS, MegaFon or Tele2 - feel free to install a “custom” version, for example, the well-known CyanogenMod assembly. Any earlier - or, conversely, the most recent - version of Android may be suitable.

In some cases, it is impossible to enter the engineering menu without obtaining Root rights. The task is to make an Android smartphone “rooted”. In other words, get “superuser” capabilities on your smartphone, allowing you to take the smartphone under the clearest and most complete control. This is achieved in the following ways, use any of them.

1. Install a custom (modified) version of Android on your smartphone. It already includes the Superuser software component, which provides access not only to the engineering menu, but also to the system folder.
2. Download from the Android Market any of the apps that can hack Android without using a computer. Different programs are suitable here: UniversalAndRoot, Unlock Root, z4root, Revolutionary, etc. Not all of them can help - you will have to test everything until it works.
3. You can also try applications for Windows that perform all manipulations with Root access on a smartphone directly from the PC - for example, the VRoot program. You also need a USB-microUSB cable - it is impossible to hack Android on a smartphone via Wi-Fi.

After receiving Root privileges, the smartphone is ready to activate the engineering menu using third-party Android applications.

The more recent the version, the more settings in the engineering menu will be in Russian. In the most earlier versions Android (1.x, 2.x) all service settings were on English. Having learned a little technical English, you can easily remember the purpose of each of the settings and, if necessary, you can change them all in a few minutes.

The availability of the engineering menu - in whole or in part - is decided not by the Android version, but by the make and model of the smartphone. Try different combinations and programs, but don't get too carried away.

If you perform inept actions or forget the entered codes, there is a risk of turning your smartphone into a lifeless device, and only a service center will be able to restore it to you. And since if you “root” the device, you automatically lose the warranty.

Android engineering menu is one of the most useful tools“advanced” user, preventing him from wasting the hardware resource of his device and the resource of cellular and wireless networks. And it doesn’t matter what version of Android you have - 2.2, 4.2.2, 4.4.2 KitKat, 5.1, 6.0 or another - the engineering menu codes are determined only by the manufacturer. By completely subjugating your smartphone or tablet, you will deprive it of the opportunity to “live its own life” not according to your schedule, but according to the scenario of the manufacturer itself, mobile operators and other intermediary companies, one way or another involved in the operation of mobile equipment in cellular networks. This is the shortest path to professionalism.

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 phone 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. The Android engineering menu is designed specifically for such cases, which can be accessed only by entering a certain 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 options for this. separate program, which you need to download from the Google branded store - the playmarket. Having launched it, the user finds himself in the service settings section of his device, just as when typing the code. For example, you can download the launch of the mtk engineering menu, the Mobileuncle application MTK Tools, 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. Level check gps signal on Android and determine your exact location.
4. Audio setup. Set the sound level for speakers, headphones and microphones.
5. Camera settings.
6. Testing the 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 opening the desired 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 are provided. 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 common and most important ones in the following list:

• *#*#4636#*#* - general information about the phone, battery status and usage statistics.
• *2767*3855# - complete reset, 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, to display the EPST menu and test functionality. In modern Samsung phone models, such as the Galaxy s6, the diagnostic menu can be opened by dialing *#0*#. And Motorola devices have a built-in secret menu. Before turning it on, you need to enter the combination *#*#4636#*#*.

Often in Chinese (and probably not only Chinese) phones, in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and microphone; we will look at fixing them 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 a 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#*#* – TEXET smartphones 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 MTK processor), to get to the engineering menu I had to install a free utility (program) from “ 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, 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 the end of the 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 various settings volume (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 most quiet 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:

Manufacturers of Android smartphones implement and use the engineering menu to test 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 the application from PlayMarket, anyone can go to the engineering menu.

Why do you need a hidden engineering menu in Android?

Engineering menu (Engineering Mode) – at its core hidden application, which is used by developers for testing and installation optimal parameters mobile phone or tablet. Specialists check the operation of the sensors and, if necessary, make adjustments to the functioning of system components.

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

How to enter the menu

To open the menu installed 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.

In the dial pad, enter a combination of numbers and symbols to enter the menu

Table: combinations for launching Engineering Mode

Video: how to work in Engineer Mode

If the code does not work and in a standard way it is not possible to start the service menu, use third party applications- You can download them on PlayMarket. Recommended programs - “Starting an engineering MTK menu", Mobileuncle Tools, Shortcut Master.

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

“Launch the MTK engineering menu”

The application allows you to open and configure the engineering menu without typing digital commands. Works correctly on MediaTek processors (MT6577, MT6589, etc.) and Android systems 2.x, 3.x, 4.x, 5.x. According to user reviews, the program successfully performs its functions, but after rebooting 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 has the opportunity to view information about the screen, sensor and device memory, as well as update the firmware, restore the IMEI number and improve GPS. For stable operation, root rights are required.

To enter the engineering menu, select Engineer Mode

Shortcut Master utility

The Shortcut Master program is designed to work with shortcuts and system applications: creating, searching, deleting. It does not have a direct function for entering the engineering menu. But with its help you can view the list secret commands, valid 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.

In the program, call up the additional menu and select Secret code explorer to see a list of codes

Root rights to access the engineering menu

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

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

Instructions for obtaining root access through the Farmaroot application

Possible problems and solutions:

• the application closed mid-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

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

Audio: Increase volume level

If your phone does not ring 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 item. Vol - maximum 200. Press the SET button to save the settings.

Change the values ​​one by one maximum volume for each level

Audio: Increase phone call volume

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

By adjusting the speaker volume, you will be able to hear your interlocutor better during a call.

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

Increased microphone sensitivity will allow the other person to hear you better

Video: adjusting sound parameters in the engineering menu

Battery: Disable unused frequencies

Smartphones quickly drain battery life running applications, maintaining cellular communications, 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. In Russia there is a 900/1800 MHz pair, 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 SIM1 and SIM2 items one by one and perform the indicated steps in each. Press the SET button to save the settings.

Disabled frequencies save battery power

If your smartphone and SIM card operate in 3G networks, disable the 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 pictures in JPEG format. Meanwhile, photographers prefer to shoot and process material in RAW to gain more editing options. The technical menu allows you to select the desired image 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 pictures, set the ISO value, enable shooting in HDR for higher photo detail, and set the frame rate for videos. After changing each parameter, remember to press SET to save the settings.

Recovery Mode

Recovery Mode is an analogue of Bios on a computer, allows you to control the device without logging into the Android system. Recovery mode features:

• resetting 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 if you are not sure what it will lead to. Some commands may harm the device and system.

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

After setting the settings, do not forget to press the SET button

Service codes for Android devices

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

Table: list of secret commands for Android

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

There are many ways to improve your Android mobile device using the engineering menu. The menu structure differs in different device models, but the basic functionality is preserved everywhere. When opening and changing parameters in the service section, be careful - some commands lead to system failures and device failure.

The engineering menu on Android devices is a special “built-in” application into the operating system that allows you to fine-tune the device. This is necessary to debug the operation of the hardware and, of course, the software. But often users want to change some settings at their own discretion. In this case, the question arises of how to enter the Android engineering menu. This can be done using special service codes or third-party software.

Developer menu: what are the options?

Settings and menu design on Android devices may vary depending on the phone manufacturer. In general, users resort to using the engineering menu for the following reasons:

• Setting up audio on the phone (ringer volume, interlocutor’s voice during a conversation);
• Changing camera settings;
• Using recovery mode;
• Setting microphone sensitivity;
• Shutdown unused frequencies to save phone battery;
• Obtaining information about the device's MAC address;
• Setting up Bluetooth and Wi-Fi.

The Android engineering menu provides the user with almost limitless possibilities. But you should always remember that only advanced users can use it. Changing some settings may cause incorrect operation smartphone or tablet. If you don't know what each menu item directly does, simply leave it alone.

The developer mode includes setting up Hardware Testing equipment and also contains the following items:

• Audio – adjusts the volume in the phone speakers.
• Camera – allows you to configure various camera parameters (image size, type, etc.).
• Diving current camera shows the current of the camera.
• CPU Stress Test performs a test load on the central processor.
• De-sense is a device manager that manages configuration parameters.
• Display – setting the frequency of the outgoing signal.
• IO – setting up input/output operations.
• Memory – key information about memory.
• Power – information about the battery.
• SD Card Test - testing a memory card.
• TouchScreen – setting up the touch screen, checking sensitivity.
• USB - testing the operation of the USB port on your phone.

In the Connectivity tab you can get information about devices that work with the outside world. These include Bluetooth, Wi-Fi and FM module. The Log and Debugging tab allows you to view the battery log, set the debugger level and run a special MTK log. In the Others tab you can change fonts, as well as view the temperature of the processor and battery.

Entering the menu: using code combinations

To enter the engineering menu as quickly and easily as possible, you will need special engineering codes. Each manufacturer has its own combination, which opens access to the engineering menu in Android.

To enter the menu you need to:

In most cases, this technique allows you to open the service menu. Below are some combinations for the most popular phones:

• Models from HTC - *#*#3424#*#*, *#*#4636#*#* or *#*#8255#*#*;
• Samsung devices - *#*#197328640#*#* or *#*#8255#*#*;
• Sony smartphones - *#*#3646633#*#*, *#*#7378423#*#* or *#*#3649547#*#*;
• Huawei phones - *#*#2846579#*#* or *#*#14789632#*#*;
• Mobile from ZTE - *#*#4636#*#*.

There is also universal code, which is suitable for most smartphones and tablets running on an MTK processor. You can look in the specifications of your device to see what processor you have installed. If this is a MediaTek (MTK) product, then try using the combination *#*#54298#*#* or *#*#3646633#*#*.

If it works, you will see the developer menu in front of you. Some engineering codes on Android do not work in operating version 4.2.1 and 4.2.2.

Using Third Party Applications

How to enter the engineering menu on Android if the Android codes do not work? There is a way. To enter the engineering menu, you will need one of the applications that will allow you to enter developer mode without entering a combination. There are several similar programs in the official Google Play store. One of them is “Launch the MTK engineering menu”.

To use it, you need:

1. Go to the Play Market and enter the name of the program in the search bar.
2. Download and install it.
3. Launch on your phone.

After that, you will see a couple of tabs with different settings.

The application allows you to perform various tests (for example, a processor stress test), obtain information about the modem or memory, and much more. You can also make changes to the hardware. To do this, you just need to open the appropriate sections and configure the settings. In this case, the phone will be on all the time.

An alternative option is the Mobileuncle tools program. You can download it on the Internet. Install the application, and then go to the “Engineer Mode” submenu. Almost all developer menu items will be available in it.

Now you know how to enable the mode Android developer. It will help you quickly make the necessary settings or monitor individual components of your smartphone.

Smartphones and tablets under Android control have a lot and interesting features, hidden from prying eyes.

Why are they hidden? Firstly, to inexperienced user I didn’t break anything, and secondly, they are needed in very rare cases and are not used regularly. Today we will talk about the engineering menu.

What is it and why is it needed?

We are talking about a special program that developers use at the final configuration stage software platform mobile device. With its help they contribute latest changes into the operation of the device, check the functioning of various sensors and perform testing of system components. Hidden functionality is also used to obtain large quantity system information and conducting various tests (about 25 pieces).

Attention! This section is intended for experienced users who bear full responsibility for the consequences.

The engineering menu is available on smartphones and tablets running on MediaTek processor . On the Qualcomm chipset it is either reduced or absent altogether.

How to open the engineering menu?

To enter the engineering menu, you need to enter a special command in the dialing application: *#*#3646633#*#*. On some versions the code *#*#4636#*#* or *#15963#* may work.

If the code did not work or you do not have a dialing application (relevant for tablets that do not support calls), the MobileUncle Tools or MTK Engineering applications, which can be downloaded for free via Google Play, will help.

Advanced users of modern smartphones and tablets use the numerous functions that the Android engineering menu has. It allows you to obtain information about the mac address, check or configure the operation of Wi-Fi, Bluetooth, update the software of the camera, and speakers. Very often, using such a menu you can improve the sound on your device and make other fine adjustments. For example, return the original Google account settings, specify settings for blocking and turning off the device, and set settings that allow you to create a backup copy of important information. Before entering the engineering menu, you need to understand that rash actions can lead to a malfunction of the device. It is advisable for the user to remember what changes were made to the system in order to return all settings to their previous state if necessary.

How to enter the engineering menu using the standard capabilities of the device?

The list of functionality can be opened by typing a specific combination of characters in the device call window. The Android engineering menu code varies depending on the brand of phone or tablet. Each manufacturer sets its own combination. Such information is usually indicated in the instructions for the phone and on official websites. Users of modern devices usually have no difficulty finding the required code.

Below we provide a table of the most common combinations. It is not recommended to use them unless your device is one of the listed brands.

The developers do not recommend executing such commands without certain knowledge and experience. But often only this method helps to quickly solve a number of problems associated with returning the device to original condition, receiving additional information about the device. The engineering menu is presented in English, which makes it understandable for most users.

Using additional programs

It is not always possible to find out the combination that is suitable directly for your device. In such situations, you can install special software on your mobile device, which will allow you to open a list of the functionality of your smartphone or tablet with a few clicks. It is publicly available for different versions of Android and device models.

The program for entering the Android engineering menu can be installed via a USB connection to a personal computer or laptop. One of them is called Mediatek Engineer Mode. It is a file EnMode.apk, which must be transferred to the device memory and installed in the usual way. This program is suitable for devices operating on the MTK processor. The user has the opportunity to download free and paid version BY.

In the Google Play store you can download the Mobileuncle MTK Tools utility. It is designed for smartphones and tablets running Android 2.1. and later versions. The description says that such a utility is also only suitable for devices equipped with an MTK processor.

The Mobileuncle Tools program is suitable for owners. There are other utilities, for example, Shortcut Master, MTK engineering menu, launching MTK engineering menu. Before installing them, we recommend that you read the application rating, reviews from other users, and also check your device for compatibility.

Setting up optimal sound by opening the engineering menu

One of the most common reasons The reason why users are looking for information on how to enter the engineering menu is the need to fine-tune the sound. The following situations may occur:

• Poor audibility when the speakerphone is on
• Sudden changes in the sound of an incoming call while listening to audio
• Insufficient signal volume
• Quiet sounds while recording video
• Quiet operation of the headset and microphone.

This is just a small list of installed settings that can be changed through the engineering menu of a modern mobile device. Sound settings are done through the Audio section, which is displayed immediately after entering the menu. Then various tabs will appear on the screen, such as Headset Mode. This tab allows you to set sound parameters that are activated when you connect a headset. Normal Mode sets the sound in the normal state of the mobile device (without connecting headphones or speakers).

LoudSpeaker Mode tab, which are activated when the loudspeaker is turned on. Headset LoudSpeaker Mode allows you to make settings for the active loudspeaker mode while a headset is connected to it. The Speech Enhancement tab provides settings that come into play when communicating over a mobile network.

In any of the modes, you can fine-tune the microphone or increase the volume (see table).

The volume of any sound parameter has seven levels - from 0 to 6. The higher the value, the louder your device will sound. We do not recommend setting the maximum settings, as this promotes faster performance. In many devices, setting the volume to maximum can result in unpleasant noise.

The engineering menu is a mechanism for fine-tuning mobile devices operating on the Android platform. For developers, the list of such features opens up new options when implementing applications. Of course, such a menu is used not only for adjusting sound parameters. It is an important tool that supports optimal performance smartphones and tablets. But it's best not to make changes you're not sure about.

Often in Chinese (and probably not only Chinese) phones Android based in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and...

Often in Chinese (and probably not only Chinese) phones based on Android in the engineering menu there are far from optimal volume settings for the speaker, headset (headphones) and...

Why you need to root an Android device and what opportunities it provides is known to a fairly large number of users, which cannot be said about the hidden advanced menu of hardware settings, also called the engineering menu. Few people know about these settings, and even fewer mobile device owners know how to use them. What is the Android engineering menu and why is it needed?

The Android engineering menu is nothing more than a special subroutine designed for testing by developers of the operating system and device sensors. The interface of this program is represented by a set of options that allow you to change the hardware configuration of your mobile device. With its help, you can get comprehensive information about the hardware of the gadget, test the processor, RAM and physical flash memory, wireless connection modes, configure the parameters of the camera, display, microphone, speakers and much more.

Entering the engineering menu

All this, of course, is good, but how do you go to the engineering menu if there is no corresponding option in the Android interface? The advanced hardware settings menu is entered using a special code entered in the phone number dialing line. The menu should open immediately after entering the last character of the combination, but in some cases you may need to press the call button.

There is nothing complicated in the procedure itself, however, it should be taken into account that for different models mobile gadgets there are their own codes. Below we have provided a list of codes for the most popular manufacturers.

Engineering menu codes in Android are universal, however, their correct operation on phones with “left” firmware is not guaranteed. To access hardware Android settings You can also use special programs, for example, "Engineering MTK menu» or "Mobileuncle MTK Tools".

Such applications are especially useful on tablets whose firmware does not provide a dialer. Interface and set available options These programs are somewhat different, however, understanding them will not be difficult.

Whatever method you use, you need to exercise maximum caution when working with the engineering menu. Before starting work, it is strongly recommended that you write down all the initial parameter values ​​so that you can restore the settings. It is unacceptable to experiment with the engineering menu just to find out what comes out of it, as you can render your device unusable!

To obtain a list of engineering codes for specific model You can use a special application on your phone Secret Codes, available on Google Play. On some mobile device models, full access to the engineering menu may require superuser rights (root).

What you can change using the menu

You know how to get to the engineering menu, now let's find out what settings can be made using it. The possibilities are more than wide. The menu subroutine supports changing the speaker volume level and microphone sensitivity, built-in camera settings, audio parameters, GPS modules, Bluetooth and Wi-Fi, turning off unused frequencies to save battery power. You can also test the key components of your device and external card memory, configure I/O operations, define exact temperature processor and battery, level of harmful electromagnetic radiation.

Another useful function is to gain access to recovery mode - an analogue of BIOS on computers, which in turn contains a whole set of settings. Recovery mode features include resetting the device to factory settings, updating the firmware, creating a backup copy of the operating system, gaining root access, and deleting sensitive user data. It is not possible to list all the engineering menu options in one article; the more sensors and components there are in a phone or tablet, the more extensive it will be.

Increasing phone volume through the engineering menu

Now let’s demonstrate how to work with hardware settings using the example of one of the most popular operations and learn how to increase the volume on Android through the engineering menu. So, go to the menu using Mobileuncle MTK Tools or by entering the “magic” code, then find and open the Audio subsection. If you entered the menu through the Mobileuncle Tools program, this subsection will be located in the senior section Engineer Mode, in other cases it is usually located on the Hardware Testing tab.

In the Audio subsection you will have the following options:

• Normal Mode – normal mode that works when a headset is not connected to the device.
• Headset Mode – headset mode that turns on when headphones or speakers are connected to the smartphone.
• LoudSpeaker Mode – loudspeaker mode. Activated when the speakerphone is turned on, provided that a headset is not connected to the device.
• Headset_LoudSpeaker Mode – loudspeaker mode with a connected headset. The same as the previous one, but with headphones or speakers connected.
• Speech Enhancement - this mode is activated when talking on the phone without using the speakerphone.

There may be other settings in the section, for example, Debug Info and Speech Logger, but it is better not to touch them. Select the mode for which you want to change the volume level (let it be Normal Mode), select Type in the list that opens and indicate for which function we will change the volume. The following functions may be available:

• Ring – adjust the volume for incoming calls;
• Media – adjust the speaker volume when playing multimedia;
• Sip- sound settings for Internet calls;
• Sph – sound settings of the conversational speaker;
• Sph2 – sound settings of the second speaker (this option may not be available);
• Mic – change the microphone sensitivity;
• FMR – FM radio volume settings;
• Sid – it is better not to touch this parameter, otherwise problems with the interlocutor’s voice may occur.

Having selected a function, scroll through the current list, set the desired Value (from 0 to 255) and click to apply the new Set settings.

To change the volume level, you can also use preset templates - the Level option. Most phones have seven levels, from 0 to 6. It is advisable not to touch the Max Vol setting, just as you should not set the Value values ​​too high, otherwise the sound in the speakers will begin to wheeze. Other modes in the Audio subsection are configured in a similar way.

Some smartphone and tablet models require a reboot for the new settings to take effect.

Reset settings

And the last thing we will look at today is resetting the engineering menu parameters to factory values. It may be needed if, after making changes, the device begins to work incorrectly. There are several reset methods. If the system boots normally, go to the settings and open the “Backup and Reset” subsection.

You can also reset the engineering menu by entering a special service code in the dialer. Usually it is *2767*3855#, *#*#7780#*#* or *#*#7378423#*#*, but your phone model may require a different code.

Another option is to use the recovery mode mentioned above. To get into it, use one of these combinations:

• Power button + volume down.
• Power button + volume up.
• Power button + Home button + Volume down/up.
• Power button + volume up + volume down.

In the list of options that opens, select “wipe data/factory reset” → “Yes – delete all user data” → “reboot system now”. The device will reboot and the settings will be reset.

There is another way to reset the engineering menu settings, but it requires superuser rights. Using any file manager that supports root rights, go to the root directory of the system, and then delete all or part of the contents of the folder data/nvram/apcfg/aprdcl and reboot.

Files in a folder aprdcl they are responsible for setting up the engineering menu. It is not necessary to delete all files at once. If you mess up, say, your audio settings, all you need to do to restore the original settings is delete files that have an audio string element in their names. And one more thing. Regardless of the reset method, always make a backup of your personal data and applications, as they may all be lost.