How to enter the engineering menu android. Android engineering menu: detailed instructions for setting up the phone Does not enter the engineering menu

Most Android devices have hidden features, which include the Xiaomi engineering menu, and indeed any other phone. It is hidden primarily from inexperienced users so that they do not break firewood.

What is the engineering menu for?

The engineering menu is used by developers to finalize the device. Here you can check the operation of all sensors and test the main components. In total, there are about 25 different types of tests.

How to open the engineering menu on Xiaomi smartphones?

There are 2 ways to enter the Xiaomi engineering menu:

Method number 1 - through dialing

This method is suitable for all Xiaomi smartphones of the Mi and Redmi line - you need to enter in the dialing mode: *#*#6484#*#*. If this code didn't work, try *#*#4636#*#* .

Method number 2 - through the settings

The algorithm of actions is simple:

We open " Settings» smartphone
Go to menu " About phone«
We find the item Kernel version"and quickly click on it 5 times

It is worth noting that depending on the model of your smartphone, the engineering menu may differ.

This is what the engineering menu looks like on Xiaomi Mi 8 Lite:

In this case, the menu has 32 items (their number may also differ depending on the smartphone model):

Check version info- version information. Here you can see IMEI and serial number;
SIM card- shows the SIM cards installed on the smartphone;
Support TFCard— information about a third-party SD drive;
touch sensor- touchscreen test;
display- display test;
Receiver- standard speaker test;
speaker— conversational dynamics test;
light sensor- light sensor test;
Proximity sensor— proximity sensor test;
OTG— testing of external USB;
charger test— charging check (requires to connect the charger);
battery indicator- displays the charge level and temperature of the battery;
read camera- rear camera;
rear sub camera- rear auxiliary camera;
rear camera- rear dual camera;
front camera- front-camera;
FPC fingerprint sensor- checking the fingerprint sensor;
keyboard test- checking the keys "increase the volume", "decrease the volume" and "lock";
vibrator test- vibration test;
Notification light (LED)— flashlight and display brightness test;
Main MIC— main microphone test;
top mic- test test of the upper microphone;
Headset test- headphone test;
WiFi AP Scan- scanning Wi-Fi networks;
WiFi address— the address of the Wi-Fi network to which the smartphone is connected;
bluetooth scan- search for bluetooth devices;
Get bluetooth address— bluetooth address of your device;
Accelerometer— check the acceleration sensor;
Gyroscope- checking the gyroscope;
magnetic sensor– magnetic sensor test;
GPS— checking the GPS sensor;
SAR Sensor— the level of electromagnetic radiation.

And here is how it looked on the old Xiaomi Redmi 3s:

The menu consists of five items:

automatic test. All parameters will be tested automatically.
Single Item Test. Here you can run any of the tests separately.
test report. Here you can see the test results.
SW add HW version. Find out the version of the smartphone.
deviceview. All information about the equipment of the device.

If everything is clear with points 1,3,4,5, then the second one needs to be told separately, since it includes a bunch of tests.

key– check for functionality of physical buttons
Blacklight– test the display for brightness
touch panel– sensor testing
TFlash- check memory card
Bluetooth- searches for all available devices
SIM card– check for availability of SIM cards
vibration- vibration test
Loopback– tests the speaking microphone for recording and playback
LCD- display colors
GPS– search for satellites
Gyro- operation of the gyroscope
g-sensor- speed sensor
Proximity Sensor- responsible for the attenuation of the screen during a conversation
optical sensor– optical sensor
Magnetic Sensor– magnetic sensor
RTC- built-in clock
speaker- checking the conversational dynamics
Receiver– checking the standard speaker
Headset– test the jack for headphones, headsets and sound playback
LED- notification indicator
FM- checking the operation of the radio
Camera- test the camera and flash
Battery- battery and charging
WiFi- looking for access points
Torch- flashlight test

As you can see, with the help of the engineering menu on Xiaomi, it is possible to get a lot of information. An experienced user can use it to roll back the smartphone to standard (factory) settings, test the operation of all sensors, find out more detailed information about the device, optimize battery consumption and much more.

The Android operating system has always been famous for its flexibility and abundance of settings. For many, this is a definite plus. You can customize your device. If the user first encountered this system, he may have a number of questions. To prevent this from happening, consider what the android setting includes.

When you turn it on for the first time, the device will ask you to make the minimum settings. You can't refuse it. First, you need to select the interface language. The main thing in this matter is not to rush. If you accidentally select, for example, Chinese, then it will be difficult to find the corresponding menu item and return to Russian.

Next, the device will prompt you to enter your Google account information. The procedure can be skipped, but it is not advisable to do this. Without an account, you will not be able to download games, use mail, maps and other applications from the Play Market. If there is no account, you can quickly register it (You can read about it in our separate one). The process is quite simple and takes no more than five minutes.

After authorization, the device will ask a few more questions that need to be answered in the affirmative. Particularly important is the point regarding data backup. Be sure to check the box. There are different situations in life. The phone can be stolen, drowned, smashed, or just accidentally erased information. Backup will protect you from losing important data. It will be enough to log in from any other device or computer and restore all the necessary data.
This completes the initial setup of the android. A welcome inscription is displayed on the display, after which, you can begin to operate the gadget. On different versions of the operating system, the process may be slightly different. Despite this, the main stages remain unchanged.
The above are only the basic settings that are necessary to turn on the gadget. This stage can only be considered the beginning. There are still many parameters ahead that can be changed depending on personal preferences.

Top curtain on the screen

This is a very convenient and useful tool that opens with a swipe. Just swipe down from the top of the screen. The shutter includes a menu with the most popular settings. Depending on the company, device model and firmware version, the set of tools may differ. In most cases, the following buttons are present in the curtain:

Silent mode. A very convenient button that allows you to turn off all the sounds of the device at once. This feature can be useful during meetings and other situations where complete silence is required.
Flight mode. By activating this key, the phone completely loses the mobile network. No one will be able to call the user and send an SMS message. The phone remains switched on and can be used as a multimedia device.
bluetooth. Allows you to quickly start data transfer without going into the main settings.
Adjust the brightness using the slider. This setting can be adjusted several times a day. This is due to the degree of illumination in the room and the level of battery charge.
Enabling and disabling the Internet. It is also a convenient feature that allows you to save mobile Internet traffic and battery power.

android home screen

The main screen consists of one or more desktops. They are necessary to accommodate the most popular icons. Adding and removing desktops works differently depending on the launcher. On certain models, the menu is called up by pinching the screen. After that, all desktops appear on the screen and it is possible to add new ones. On other gadgets, you need to move the application icon to the area where the desktop does not exist.

All androids have the ability to add widgets. This allows you to read important information directly from the desktop. There are a large number of widgets. Among them you can find the clock, weather display, recent messages, system settings, music player and much more.

Main menu of device settings

To fine-tune your device, you need to go to the “Settings” item. This is a kind of gadget control center. All available functions are concentrated there. Let's look at them in more detail below.

WiFi

To connect to a wireless network, you must click on this icon. Next, move the slider to the active position. The system automatically starts scanning available networks. The display will show a list of found networks. There are unsecured connections. In most cases, they are located in public places (cafes, restaurants, hotels). To connect to them, one click is enough. The situation changes if a lock icon is displayed next to the connection. This means that this network is password protected. After entering the password, you can freely use the Internet.

In the Wi-fi settings there is a very useful item - “Enabled in sleep mode”. By activating this function, Wi-fi will be turned off when the phone is at rest. This saves battery power.

Screen

Screen settings need to be given special attention. Firstly, this is a key part of the android, and secondly, it is the main consumer of energy.

It is possible to change the following settings:

Wallpaper. The user has the right to install any image on the desktop of the device. Factory screen savers are not original, so they quickly get bored. With this feature, you can install any photo or positive picture on the main screen. In addition, there are live wallpapers that are made in the form of animation.
Sleep mode. This function allows you to set the period of time after which the phone will go into sleep mode. If you do not touch the phone for a specified time, it will turn off the backlight and lock the screen.
Brightness. The brightness of the screen affects your vision and battery life. Adjustment occurs by moving the slider. There is also an item "Auto tuning". If activated, the display will change brightness depending on the level of lighting in the room.
Screen auto-rotate. A very handy feature. The screen is automatically reoriented depending on the position of the smartphone in space. If necessary, this feature can be disabled.

Sound

Android features allow you to set any ringtone for incoming calls, messages, alarms, etc. In addition, you can set the volume level for each category of sounds.
All smartphones have the ability to turn vibration on and off when making a call. The Silent Mode switch disables all sounds on the device.

Special abilities

This menu may differ depending on the functionality of a particular gadget. On top models, you can activate the acceptance of a call by shaking the phone and much more. These functions are optional and rarely used in practice.

Security

If important information is stored on your smartphone, you need to take care of security. The android system offers a number of solutions for this:

graphic key;
digital password;
alphanumeric password;
fingerprint scanner (if the device has this function).

This is quite enough to protect the gadget from unauthorized access. In addition, the device tries to protect itself from all kinds of viruses. Therefore, the key "Unknown sources" is provided. By default, android does not allow you to install applications from third-party sites and other sources. To install a third-party program, you need to activate this function.

date and time

There are a number of cases when the date and time are lost on the device. You can configure them in the main menu. To do this, just click on the appropriate tab and indicate the current numerical values. You can go the simpler way. By activating the "Network date and time" function, the device will synchronize the time from the Internet.

Battery

Here you can not only see the status of the battery, but also reduce its consumption. For this, a special tab "Energy saving" is provided. Going through it, we will see several ways to optimize consumption:

processor limitation;
decrease brightness, turn off screen rotation and reduce backlight time;
turning off the Internet, Bluetooth and navigation;
disable vibrating alerts and vibration in applications.

You can activate all categories at the same time or select one. Unfortunately, the battery saver feature is only present on new versions of android.

Applications

This is one of the main menu items. From here, all applications of the device are managed, as well as their removal. If the device is not equipped with sufficient RAM, you need to look at the "Working" tab. The currently active applications will be listed there. They can consume a lot of resources and cause the device to slow down. To fix this, the user needs to stop unnecessary applications. Often there you can see unused and useless programs.

Each manufacturer releases gadgets with a certain set of built-in applications. In most cases, they turn out to be of little function and take up extra space. Some of them can be removed. To do this, find the application and click on it. Next, a window will open in which you need to click the delete button and confirm your actions. Thus, you can free up internal memory and clean the phone from "garbage".

Developer Options

For advanced users there is a separate menu item. Initially, it is not displayed in the system. To use it, you need to find the "About phone" tab and then "Build number". After that, click on it about ten times. The screen should display "You are now a developer". After that, hidden settings will become available.
Here you can activate many functions. For example, change the speed of graphic effects, set a limit on background processes, and much more. The main thing is not to press everything in a row. This may affect the operation of the device.

Launcher installation

Manufacturers of Android-based devices are trying to stand out and create an individual graphical shell. In this regard, menus, icons, buttons and other elements look different on all devices. In some cases, the factory shell can be boring and non-functional. You should not be upset in this case, since this operating system allows you to install any design. Just go to the app store and download the launcher you like. This is not just a design theme, but a radically new shell of the system. As a result, the user can set the design to his taste.

Settings with Root rights

By setting this type of rights, the user gets unlimited access to system files. As a result, you can delete system files, adjust the processor frequency, change the built-in system sounds, and much more.
Root rights must be used very carefully. Careless actions may cause the device to fail. It is also worth remembering that installing root rights entails the loss of warranty from the manufacturer. You can read more about root rights on our website in the corresponding article.

Reset

If the android settings are not carried out correctly and there is no desire to correct your mistakes, you can do a reset. This will cause all changes made earlier to be returned to the factory settings. But it is worth remembering that this erases part of the data that is stored in the gadget's memory. Therefore, before resetting, it is necessary to back up all important information. It often helps in troubleshooting problems associated with incorrect operation of the device. How to do it right - read in our

Conclusion

Devices based on the Android operating system have an unlimited number of settings. However, it is not necessary to use all of them. Such an abundance was created not to complicate the life of the buyer, but to provide him with ample opportunities for personalizing the device. For normal use, it is enough to set the date, time and create an account from Google. And then, at any time, if you want to use the full potential of the system, fine-tune the device.

Probably, many smartphone owners have faced the volume problem. For example, two things did not suit me. The first is a quiet speaker sound when an incoming call, and the second is a very loud sound in the headphones when an incoming call.

A little about how Android controls volume

If no headset is connected to your gadget (headphones, hands-free, etc.), then the volume settings will be the same, and as soon as you connect the headset, the settings will become different. For a general understanding, I will give a few examples.

Example 1 You listen to music on your phone, turn on the loud speaker at full volume, and when you connect a headset to it and turn on the loud speaker again, the volume may differ (it may be louder or lower, depending on which phone model or firmware version).

Example 2 You are watching a movie in headphones, the volume (meaning the volume of multimedia) is set to 40% and then after a while you have an incoming call, then the volume in the headphones will change to the general volume, in which case you can get a powerful sonic shock to the ears. Believe me, I have been blown up from the couch more than once in such cases, the fact is that the programmers have poorly adjusted the volume modes.

Example 3 You are on a phone call and need to switch to speakerphone mode, and you notice that the speaker is not as loud (or vice versa) as when listening to music; or the partner began to hear you badly, this is because in different modes the microphone may have different sensitivity. Also, when you connect a headset in the same situation and turn on the speakerphone mode, the settings are different again. This is how Android manages volume.

We learn the theory of the engineering menu

So let's look at what and how can be done if you play a little trick on the "Engineering Menu".

Before making any changes, we recommend that you read the article in full, and comprehend, and then experiment. Also take a piece of paper and write down all the default values in case something goes wrong. You can start the engineering menu using the telephone dialing: we prescribe the following combinations on it (Fig. 1):

picture 1

*#*#54298#*#* or *#*#3646633#*#* or *#*#83781#*#* - smartphones based on the MTK processor

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

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

*#*#7378423#*#* - Sony smartphones

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

*#*#2846579#*#* – Huawei smartphones

Congratulations, you have entered the engineering menu (Fig. 2). Keep in mind that the menu on different phones may differ slightly in structure. We find the section "Audio" and go into it. After entering, we see a bunch of unknown lines (modes) (Fig. 3). Here's what these modes mean in Android:

figure 2 figure 3

— 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(loudspeaker mode) - it is activated when nothing is connected to the smart, and you turn on the speakerphone while talking on the phone;

— Headset_LoudSpeaker Mode(loudspeaker mode when a headset is connected) - this mode is activated when headphones or external speakers are connected to the smart phone, and you turn on the speakerphone while talking on the phone;

— Speech enhancement(Talking mode) - this mode is activated in the normal talking mode on the phone, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.

It’s better not to poke your nose into the last three sections:

— debug info- it is not clear why - info on the backup of information or its debugging;

— Speech logger- I didn’t fully understand, most likely, keeping a log during negotiations or recording chatter. 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 takes the following form: Wed_Jun_2014__07_02_23.vm (Wednesday_July_2014__time07_02_23.vm).

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

— audio logger- good sound recording software that supports quick search, playback and saving.

If you approach these modes wisely, you can adjust the volume of Android smartphones or tablets the way you want. When entering any of the modes, various volume settings (Type) will become available to your gaze. Here is a list of the main settings you need to know (Fig. 4):

figure 4

—Sip– settings for Internet calls;

— Mic– microphone sensitivity settings;

— Sph- settings for the conversational speaker (the one that is applied to the ears);

— Sph2- settings for the second conversational speaker (I don’t have it);

— sid- we skip, when you change these parameters during negotiations on your smartphone or tablet, you can hear yourself instead of the interlocutor;

— media– setting the multimedia volume level;

— ring– setting the volume level of the incoming call;

— FMR– FM radio volume settings.

Further, under the item for selecting settings, we have a list of volume levels (Level) (Fig. 5). For a better understanding, there are 7 such levels, from level 0 to level 6. Each level corresponds to one “click” on the volume rocker of a smartphone or tablet. Accordingly, level 0 is the quietest level, and level 6 is the loudest signal level. Each level can be assigned its own values, which are in the Value is 0~255 cell, and should not go beyond the range from 0 to 255 (the lower the value, the lower the sound). To do this, you need to erase the old value in the cell, then enter the new (desired) value and press the “Set” button (the one next to the cell) to assign (Fig. 6). Be careful when using the maximum values, as the speakers may produce uncharacteristically unpleasant sounds in the form of rattling and other unpleasant effects.

figure 5 figure 6

A warning! Before making changes, overwrite all factory values (in case something goes wrong).

You must know!

Editing modes in the engineering menu

Example 1 How to increase the volume of an incoming call?

To do this, you need to go to the engineering menu, print the "Audio" section, go to the "LoudSpeaker Mode" mode and select "Ring" in the volume settings - the volume settings for the incoming call. Then sequentially change (increase) the values of all signal levels (level 0 - level 6). Also, for greater effect, you can increase the value of the Max Vol section. 0 ~ 160, if it is not the maximum (I set mine to 155, with a larger value, the speaker starts to “wheeze”).

Example 2 How to increase the volume when talking on the phone? (Increasing the volume level of a small speaker, the one that is applied to the ear).

Again we go into the engineering menu already known to us, print the “Audio” section, go to the special “Normal Mode”, select Sph in it - this parameter is responsible for changing the value of all signal levels in the range from level 0 to level 6. Set the one you need for us level. In the Max Vol. 0~160, can also be changed to a higher volume power setting.

Example 3 Increasing the volume and sensitivity of the smartphone's conversational microphone

To adjust and set the required volume level and also the sensitivity of the conversational microphone, you need to go to the “Engineering menu”> “Audio”> “Normal Mode”> select Mic - microphone sensitivity settings, and for all levels (level 0 - level 6) we assign one and the same value, for example 240. Now the interlocutor should hear you better.

Example 4 How to increase the sound recording volume while recording a video?

Suppose there is a need to increase the sound recording volume level during video recording, then in the engineering menu for our loudspeaker (LoudSpeaker Mode) change the microphone sensitivity settings (mic), increase all values at all levels (level 0 - level 6), for example set to 240 at every level. I remind you of pressing the button (set) - we reboot our favorite gadget and rejoice.

By the way, do not forget to press the “Set” button after each editing of a certain parameter. This action should commit and accept your command for execution. Otherwise, the user-set parameters are not activated. In addition, a certain number of mobile devices require a reboot for the changes to take effect (turn off and on the device).

Good luck with your experiments, if something is not clear - write in the comments. We are waiting for your answers.

Table of codes for entering the engineering menu

smartphones based on the MTK processor	##54298## or ##3646633## or ##8612##
Samsung	##197328640## or ##4636## or ##8255##
HTC	##3424## or ##4636## or ##8255##
Huawei	##2846579## or ##14789632##
Sony	##7378423## or ##3646633## or ##3649547##
Fly, Alcatel, Philips	##3646633## or *#9646633#
Prestigio	##3646633## or ##83781##
ZTE	##4636##
Philips	##3338613## or ##13411##
TEXET	##3646633##
Acer	##2237332846633##
blackview	##3646633## or #35789#
cube	##3646633## or ##4636##
Cubot	##3646633##
Doogee	##3646633##, #9646633# , #35789#* or ##8612##
Elephone	##3646633##,
HOMTOM	##3646633##, ##3643366##, ##4636##

Note: table is constantly updated

Surely not many users of Android OS devices know that there are so-called engineering (service) codes, which, by the way, appeared much earlier than the release of the first version of the Android OS. This set of special characters was called the “Engineering Menu” by the developers, which is recommended to be manipulated only by specialists, but, nevertheless, this kind of information will be clearly interesting and probably useful for ordinary users.

The main purpose of this system is to work with it for service center specialists to repair and fine-tune mobile devices. Therefore, after reading this material, and having learned the combination of characters to enter one or another block of the engineering menu, decide to experiment with your own device, without having sufficient knowledge and training, you should be aware that all responsibility for the consequences will lie only with you.

What can be changed in the engineering menu

Now we will tell you what can be done using one or another engineering code:

Engineering menu codes and their functions:

Find out the IMEI ID - *#06#
Settings and details - *#*#4636#*#*
Android firmware, version - *#2222#
Delete all SMS - #*5376#
Getting information about the phone (usage statistics) and battery - *#*#4636#*#*
Resetting the settings of the Google account of the owner of the phone and other system utilities without deleting the pre-installed software while preserving the programs located on the memory card (SD) — *#*#7780#*#* (before resetting the settings, you will be asked to confirm the action being performed, so there is still a chance to change your mind).
Performing factory formatting - deleting absolutely all settings and files, including those stored in internal memory, and reinstalling the smartphone firmware - *2767*3855# (The introduction of the code does not give a chance for reflection, it is only possible to quickly remove the battery and restore data via the PC)
Camera Information - *#*#34971539#*#* The following options are available here:

- updating the firmware of the phone's camera into an image,

- Get the firmware version,

- information about the number of firmware updates,

- updating the camera firmware on the es-di card.

Important! You should NEVER use the first option yourself in order to avoid a complete failure of the camera.

Change the modes of the button "Hang up" (On.Off.) — *#*#7594#*#* By default, a long press of the button shows on-screen options to switch to modes: silent, flight, or turn off the smartphone. Here you can turn off your phone automatically without selecting options.
Opening the file copy screen — *#*#273283*255*663 282*#*#* Here you can get backup copies of your own data (photos, audio, etc.).
Entering the service mode (launching various tests (by pressing the "menu" button), changing settings in the service mode) — *#*#197328640#*#*

Factory test codes:

Wi-Fi MAC address - *#*#232338#*#*
WLAN- *#*#232339#*#*
GPS test - *#*#1472365#*#* or *#*#1575#*#*
Bluetooth - *#*#232331#*#*
Bluetooth address - *#*#232337#*#
Batch Loopback Tests − *#*#0283#*#*
Touch screen version - *#*#2663#*#* (test *#*#2664#*#* )
Motion sensor test - *#*#0588#*#*
LCD test - *#*#0*#*#*
Vibration and backlight *#*#0842#*#*
Melody test - *#*#0673#*#*
RAM Version - *#*#3264#*#*

We have given information only about the main Android codes that solve some problems in the operation of the device and therefore may be of interest to advanced users. But, nevertheless, we remind you once again: DO NOT enter any code if you do not know what they are for!

To enter the Engineering Menu, instead of a phone number, enter into the dialer a certain combination of characters that are different for different manufacturers:

For Samsung - *#*#8255#*#* or *#*#4636#*#*
Smartphones based on MTK processors - *#*#3646633#*#* (possibly *#*#54298#*#* )
HTC- *#*#8255#*#* or *#*#3424#*#*
Sony - *#*#7378423#*#*
Huawei- *#*#2846579159#*#* or *#*#2846579#*#*
Fly, Philips, Alcatel - *#*#3646633#*#*

Immediately after entering the engineering menu should open. In case of failure, you can try to press the button that makes the call.

To launch the engineering menu on smartphones with an MTK processor, there is a special application that you can use if the service does not open through the dialer.

In fact, as can be seen from the material, the service menu opens up huge opportunities for setting up or troubleshooting the device, but amateurs still should not use it in order to avoid “bricking” their Andryukha. Keep this note in mind if your hands are itching to urgently enter the coveted code.

Let's look at the features of the Android engineering menu from various manufacturers, what it is for, how to use it, and what useful functions this menu brings to you.

This article is suitable for all brands that produce phones on Android 10/9/8/7: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Attention! You can ask your question to a specialist at the end of the article.

What is the Android engineering menu?

Engineering menu (Engineering Mode) is a special application that is available on almost any gadget. It is used by the manufacturer for various tests and optimization of sensors, functions and other parameters of a tablet or phone. This menu is hidden by default in the system so that the user cannot access it.

As a rule, the engineering menu is called up using a small code that is entered on a standard dialer. Access to it can be carried out using third-party programs.

The engineering menu is hidden due to the fact that careless use of its capabilities can lead to device failure. Be careful when making any changes.

How to enter the engineering menu on Android

The secret application cannot be launched through the normal interface. You can enter the engineering menu in this way:

Open the call window to enter a phone number from the keyboard.
We write a special combination of characters.
If immediately after entering the code this menu does not start, press the call button.

Each manufacturer has its own combination of characters, which contains special characters (*, #) and numbers. For example, for Samsung phones, the engineering menu is launched by the following sequence: *#*#4636#*#*. The screenshot below shows codes for different gadget manufacturers.

If nothing happened after entering the code, use applications from Google Play that work with the engineering menu. For example, the MTK Engineering Mode application, which is a complete copy of the standard engineering menu. Most of them will require root rights to the device, without which the software will function with errors, and some of the parameters will be inaccessible.

Mobileuncle Tools

The program has advanced features. You can view and change basic settings, update firmware, repair IMEI and improve GPS signal. The utility displays the full characteristics of the memory, screen, sensor.

MTK engineering menu

Program for gadgets with MediaTek processors. Loads successfully engineering functions, but there are errors with saving parameters. They may reset after a reboot.

recovery mode

This mode for developers will come in handy when there are serious problems with the gadget. If the tablet or smartphone does not turn on, and you cannot get into the regular menu, then it will be possible to start the recovery mode.

To start, use the following combination: the power key and the button to decrease or add sound. In some cases, you must additionally press Home. Press and hold the indicated buttons until the download starts.

In this mode, the most useful section is wipe data. With it, a full reset is launched, and the device returns to the factory settings. You will get a clean phone and all data and apps will be lost. Resetting helps in a situation where you are too clever with changes in the engineering menu by setting inoperable values.

Shortcut Master Utility

The software allows you to work with shortcuts and system programs (create, search, delete). There is no function of direct entry into the engineering menu, but you can see a list with secret commands that operate on your gadget.

By clicking on the name of the command, the user is shown a drop-down menu with the item "Run". The utility is convenient, unnecessary actions are not required.

To see the list of codes, you need to call an additional menu in the utility. Then select the line "Secret code explorer".

Root rights to enter the engineering menu

To enter the engineering menu in some versions of Android, the user needs to have . They can be obtained using specialized software: Romaster SU, UniversalAndRoot, Farmaroot, etc.

Instructions for obtaining root rights using Farmaroot:

Install and run the software.
If the utility supports rooting your gadget, then the “Get root” option will be displayed on the screen. We select this item.
From the pre-installed methods for obtaining root, select one.
The software will start installing.
After the procedure is completed, a message will be displayed about the successful installation of root access.

Possible errors and solutions:

Root rights are not installed - try another method (select a new exploit in the application).
The application closed in the middle of the installation. The user needs to restart the device and try again.

Engineering menu functions

The engineering menu is divided into several categories. Let's look at each of them separately:

Telephony. This category contains settings that relate to mobile communications. For example, you can disable or enable certain BandMode (different frequencies for 2G / 3G / 4G operation), disable data transfer in the background, or check the operation of SIM cards.
Connections Configuring Wi-Fi, Wi-Fi CTIA, radio, Bluetooth settings. In the settings it is possible to specify the type of antenna (you must use headphones), radio wave, sound format (stereo or mono). The radio will play directly from this section.
Hardware Testing. Here you can configure the operation of various components of the device: the sound levels of the speakers and headphones, the microphone, various stone parameters (focusing, HDR, ISO adjustment, photo aspect ratio and much more), the operation of sensors (calibration), touchscreen, etc. This category is quite global and large, in all sections it is necessary to understand and have skills and serious knowledge.
Location (Location). In this category, the GPS operation is configured, you can test it, see the number of satellites found.
Log and debugging (Log and Debugging). In this category, logs (logs) of the battery (charge percentage, temperature, operating time, voltage) and other functions that are little known to the average user are kept.
Others. It contains two features that are unknown to most users.

Engineering menu settings

The options for adjusting parameters and the appearance of the engineering menu may differ depending on the model of a smartphone or tablet. Users in the menu change camera settings and apply recovery mode.

Volume boost

If your gadget is not loud enough, then in the engineering menu you need to find the Audio item and go to LoudSpeaker Mode. There we select the Ring tab. For all signal levels (1 - 6 Level) we change the values. The numbers are set in ascending order.

In the Max. Vol. increase the value to the maximum. To save the settings, press the SET button.

Increasing the volume of a telephone conversation

To increase the tone of the speaker during conversations, select Normal mode in the Audio service menu, then open the Sph section. For signal levels (1 - 6 Level) we set values from 100 to 150, and Max. Vol. - 160.

In the Audio menu, you can increase the sensitivity of the microphone. To do this, select the item Normal mode, then Mic. For all levels, we assign the same microphone sensitivity value. We press the SET button, then we reboot and check if the interlocutor has begun to hear you better.

Battery: disable unused frequencies

Phones quickly use up battery life for applications, network connections, and maintaining cellular coverage. Using the engineering menu, you can increase the battery life.

Modern gadgets scan GSM frequencies 850/1900 MHz and 900/1800 MHz. In Russia, 900/1800 MHz operate, so there is no need to scan the network at other frequencies. For the second pair, the radio signal can be turned off, which will save the charge level.

Open the Band Mode section in Engineer Mode. There we turn off unused frequencies. To do this, remove the checkmarks from the corresponding items: PCS1900 and GSM850.

When the smartphone supports 2 SIM cards, open the SIM1 and SIM2 items in turn, after which we perform the indicated actions in each. Press the SET button to save the settings.

If the SIM card and phone work in 3G networks, you need to disable networks that are not used in Russia: WCDMA-CLR-850, WCDMA-800, WCDMA-PCS 1900. Press the SET button again. To enable scanning of networks that you have disabled, you must return to this menu, then check the boxes.

Camera settings

On Android gadgets, by default, pictures are saved in JPEG format. Many photographers prefer to take pictures and process them in RAW format for more editing options. The desired image format allows you to select the technical menu.

We find the Camera section in the menu, where we select “Capture Type” (Capture Type). Set the photo to RAW format, press SET. Even in the Camera section, you can set the ISO value, increase the size of the pictures, turn on HDR shooting for more detail, and set the frame rate for the video.

Android Engineering Menu Secret Codes

In addition to the engineering menu, you can use secret codes to access various options. The screenshot below shows the most useful and popular codes.

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