home > Internet > Engineering menu Android 5.1. Android engineering menu, its capabilities and quick entry

Engineering menu Android 5.1. Android engineering menu, its capabilities and quick entry

Advanced users of modern smartphones and tablets take advantage of the numerous features that come with engineering Android menu. It allows you to get information about the mac address, check or configure Wi-Fi, Bluetooth, update software cameras, 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 settings Google account, specify settings for blocking and turning off the device, set settings that allow you to create a backup copy important information. Before you log in engineering menu, it is necessary to understand that rash actions can lead to malfunction of the device. It is advisable for the user to remember what changes were made to the system in order, if necessary, to return all settings to their previous state.

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

List functionality can be opened by typing a certain combination of characters in the device's 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. For users modern devices Usually there are no difficulties in 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 performing similar commands without specific knowledge and experience. But often only this method helps to quickly solve a number of problems related to returning the device to its original state, receiving additional information about the device. The engineering menu is presented at English language, making 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 set to mobile device special software that will allow you to open a list of the functionality of a smartphone or tablet with a few clicks. It is publicly available to various Android versions and device models.

The program for entering the Android engineering menu can be installed via a USB connection to 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 shop Google Play It is possible to download the Mobileuncle utility MTK Tools. 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 switched on speakerphone
Sudden changes in sound when 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 installed settings, which 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 installing maximum settings, because it promotes fast . 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 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.

Click "Like" and read the best posts on Facebook

Why do you need rooting? Android devices and what opportunities it provides are known to a fairly large number of users, which cannot be said about the hidden advanced hardware settings menu, 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 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? Enter the advanced hardware settings menu using special code, entered in the line to dial telephone number. 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 different models of mobile gadgets have 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 can also be used special programs, For example, "MTK Engineering Menu" or "Mobileuncle MTK Tools".

Such applications are especially useful on tablets whose firmware does not provide a dialer. The interface and set of available options in 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 a specific phone model, you can use a special application 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, Bluetooth and Wi-Fi modules, and 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, determine the exact temperature of the processor and battery, and the 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 firmware, creating backup copy operating system, gaining access to root rights, deleting confidential user data. It is not possible to list all the engineering menu options in one article; the more sensors and components a phone or tablet has, 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 and set desired value 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

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 with the support 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 moment. Regardless of the reset method, always make a backup of your personal data and applications, as they may all be lost.

Android engineering menu and secret codes. What does the Android OS allow you to configure through the engineering menu? Sound volume, sensors and much more, read about all this in our article.

Our smartphones carry a lot of secrets that are hidden by manufacturers. Do you know anything about the engineering menu on Android? Have you heard about secret codes? Since they opened our article, it means they heard something remotely. All these tools appeared at the birth of the first mobile phones, but, as is natural, over the years they became more functional and understandable.

However, it is worth noting right away that the manufacturers’ plans do not include making the engineering menu or secret codes for (as the name implies) available to everyone. And this makes sense. Let's go in order.

What is the Android engineering menu, secret codes?

So, Engineering Mode (engineering menu) - special application, which is installed on almost any smartphone. Used by the manufacturer to conduct various tests and optimize the operation of functions, sensors and other parameters of a phone or tablet.

By default, it is hidden in the system so that every user cannot access it. Called, as a rule, using a small code entered using a standard dialer. Thanks to its extensive capabilities, the engineering menu can be accessed and managed using third-party applications.

Why is the engineering menu hidden? If you use the application's capabilities carelessly, you can damage your smartphone or other device. As noted above, the engineering menu is intended for manufacturers (developers, for conducting tests). Therefore, you should be careful when making any changes here.

Secret codes on Android (service, engineering) are somewhat different from the menu discussed above. If the engineering menu provides access to many parameters at once, then one entered service code leads to only one, as a rule, function. There are a lot of codes.

Moreover, there are both universal ones (work on most Android smartphones, even mobile phones) and codes for specific models devices. We'll look at the most popular ones a little later.

How to access the engineering menu on an Android device - codes

Android engineering menu - the most popular code

There are two popular methods: through a secret code or using special software. Naturally, the first method is simpler and more reliable, but not without nuances. There is no universal code that will definitely take you to the engineering menu.

On one smartphone one triggers, on another – another, on a third – a third. However, Android is not the first year, so users have developed the most popular codes that work on most devices. So:

*#*#3646633#*#* – the most common entry code into the Android engineering menu;
*#15963#* and *#*#4636#*#* – if the previous one did not work, try these;
*#*#7378423#*#* or *#*#3646633#*#*or *#*#3649547#*#* – used on smartphones from Sony;
*#*#3424#*#* or *#*#8255#*#* – we draw the attention of owners of HTC devices;
*#*#197328640#*#* – in some cases it works on Samsung;
3845#*855# – often used to access the engineering menu on LG Android smartphones;
*#*#54298#*#* – works on many devices with a MediaTek processor;
*#*#2846579#*#* or *#*#14789632#*#* – and Huawei has its own set of codes.

At least one, but it should work on your device. Simply enter the code using the dialer (Phone application on the desktop). As a rule, you don’t even need to press the call button (not always) - when you finish dialing, the automatic start services. But not everything is so simple; there are certain difficulties in launching the engineering menu on some Android phones.

I can’t enter the Android engineering menu: reasons

Firstly, many smartphones or tablets with Qualcomm Snapdragon, Intel or Tegra processors either do not have a menu or are very difficult to access. In some cases, you don't even have to try.
secondly, the cause of the problems may be custom firmware. In a number of them, access to configuration tools is simply absent or blocked. For example, you will not find an engineering menu in the CyanogenMod firmware, which is very popular among users. The reason is simple - the firmware was originally developed for Snapdragon-based devices.
thirdly, the source of the problems may be the manufacturer himself, who hid the engineering menu more reliably or decided to remove it altogether. This also includes various types of errors from which none of the devices are insured.

Actually, solutions to problems lie on the surface. If the smartphone is powered by Snapdragon, Intel or Tegra, then in most cases nothing can be done. However, even on these devices you can access a number of hidden settings, which we will discuss below.

By the way, on Xiaomi smartphones, which are mostly based on chips from Qualcomm, engineering can be accessed by clicking several times on “Kernel version” in the smartphone settings (section “About phone”). Finally, in some cases, flashing your Android device to stock (official) firmware will help.

The second way to open access to the engineering menu is through applications. There are quite a few of them, you can download them for free from, but almost all of them are designed for smartphones based on the MediaTek processor.

Again, it is not a fact that each of the programs will work smoothly on your device - there are a hundred reasons why they will refuse to function. These tools are developed by small companies, so you'll probably have to try a few.

What can be configured in the engineering menu?

How appearance interface and the set of parameters for configuration may differ for different smartphones. If you take a Qualcomm Snapdragon device, then often all you can do is look at information about the various modules and perform some tests.

You will not be able to make any changes to the parameters. But MediaTek smartphones offer much more options: sound configuration, network settings, various modules, and so on.

So, regardless of the fact that the external interface of the engineering menu may differ by different devices ah, it won’t be difficult to sort out the points. Let's go through the main features.

Once again, you make changes at your own risk. Don't change the values of parameters you don't know anything about.

Informative features of the Android engineering menu

The first thing the Android engineering menu offers is to study various information about the device. It mainly concerns the network, wireless interfaces and battery (on smartphones with Snapdragon processors using the command *#*#4636#*#*). What can you see in these sections:

Phone IMEI is a special (unique) number that is assigned to each smartphone;
Phone number – not always indicated;
Network – the current operator is indicated;
Roaming – whether you are there or not;
Information about the network - whether it is being serviced or not, enabled or disabled;
Call forwarding – whether used or not;
Network type, network index;
Signal volume and your location in the form of coordinates.

In the "About the battery" section:

Status: charging or not;
Charge level (in percent);
Voltage and temperature;
The technology used to produce the element;
Time since last reboot.

One of the sections allows you to view information about the use of applications on your smartphone (name, date of last launch, duration). In addition, a separate section of the engineering menu on Android is dedicated to the wireless interface. Here you will find information about the connection status, the name of the network, you can find out the speed and some other data.

Testing smartphone parameters in the engineering menu

Quite an interesting feature of the engineering menu that allows you to perform tests various parameters smartphone. It often helps to find the source of the problem that is causing the system to not function properly. What specific tests can be performed:

Comprehensive (Automatic Test) – every parameter of the smartphone is tested;
Report – provides a test report;
Testing buttons, memory cards and SIM cards, vibration, speakers, connectors - all this can be checked for functionality;
Screen tests - for brightness, sensitivity, etc.;
Testing cameras and flash, flashlight, wireless interfaces and sensors (gyroscope, accelerometer and others).

Again, the range of testing options may vary. It all depends on the engineering menu of a particular Android device. Undoubtedly, useful functions that will be useful to many users. For example, when purchasing a used smartphone, you can test the screen for functionality.

Changing settings in the Android hidden menu

If there is nothing to be afraid of when testing or studying information about a phone or tablet, then you need to make changes carefully.

It’s better not to touch parameters at all, the purpose of which you don’t know, and also take screenshots or mark on a piece of paper everything that you change. If problems arise, you can return the options to their default values. Let's look at the most interesting sections here.

Setting up cellular communications (Telephony) and changing IMEI

Android engineering menu - frequencies

Settings for changing network parameters are concentrated here. You are unlikely to be able to disable your smartphone by changing these parameters, but the network search can be disrupted, so remember where you take pictures and where you put the checkmarks, so that in the future, if anything happens, you can return everything to its place.

As a rule, changes in this section are made in order to reduce energy consumption.

Firstly, you can deselect frequencies (subsection Band Mode) on which your operator does not work. Let's find out what ranges yours operates in mobile operator, uncheck all the others. This will help reduce energy consumption a little, since it will know exactly which frequencies to connect to.

In the same subsection, on the contrary, you can turn on the desired frequencies. This is needed when the manufacturer from the factory does not activate the necessary ones for your region. For example, often “out of the box” Chinese smartphones cannot work in Russia with LTE. The service menu on Android will help solve this problem.

Secondly, in subsection Network Selecting we can set the priority of the networks that are used for access (2G, 3G, 4G). Everything is done for the same purpose: increasing time battery life from the battery. As a rule, 3G and/or 4G networks are turned off. Not every region has support for these networks, and the communication module, be that as it may, continues to search for them, consuming energy. Turned it off and no problem. In addition, the device will not switch to 3G or 4G, wasting traffic.

To subsection GPRS, it’s better for us, ordinary users, not to get into it unless there is a good reason for it. Here you can find various settings for how your smartphone works with the network, and there is also an option for changing IMEI.

Attention! There were precedents for criminal prosecution for illegal shifting IMEI numbers. More often the punishment is a fine or a suspended sentence. However, there were cases of actual imprisonment.

The IMEI change function can be useful after an unsuccessful firmware attempt, when the identification number “flies off”. Then you can simply copy it from the box the device came in.

Connectivity

Here, as in the case of GPRS, most people have nothing to do. The section itself is intended for making changes to the settings Wi-Fi modules and Bluetooth. In this section you won’t be able to configure anything to make your smartphone work better, but you can easily harm your electronic friend.

Therefore, here we use only testing functions, and if it is necessary to make some corrections to return the device to a working state, we carefully study the purpose of each parameter on the Network.

Setting the sound volume in the Android engineering menu (Audio)

Android engineering menu - volume adjustment

Judging by the number of queries in the search, it is in order to increase the volume that Android users resort to the engineering menu. It's quite simple:

Select the Hardware Testing -> Audio tab. Select the desired mode;

Normal Mode – is responsible for outputting sound to the main speaker.
Headset Mode – it is used to adjust the sound volume in the headphones.
LoudSpeaker – includes settings for adjusting sound parameters during speakerphone calls.
Headset_LoudSpeaker Mode – allows you to increase or decrease the sound volume for speakerphone mode with connected headphones.

Now from the drop-down list we select for which device we will adjust the volume in the Android engineering menu;

Sip – options for Internet telephony. Mic – sets the microphone sensitivity. Sph (maybe two) – setting the earpiece speaker. Media – multimedia speaker (main). Finally, an item that is best left untouched is Sid. After changes, an echo may appear.

The “Level” line specifies the volume level value, which is associated with each step (click) of the volume rocker. The default is 0. You can leave it alone, unless, of course, the sound on your device jumps sharply when you press a button.
The “Value is” line specifies the value of each step (volume level);
The most interesting line is “Max Vol”, with which the maximum volume on Android is increased through the engineering menu.

As a rule, the smartphone manufacturer does not set the maximum value, so we can correct it ourselves. Please note that at the highest level, the speaker wheezes. To choose the most comfortable value, we go through the options.

Secret codes for Android

In addition to the engineering menu, you can use secret codes to access various functions. Here it is also difficult to predict which of the commands will work on your device. Let's look at the most popular and useful:

*#06#	Getting the IMEI of the smartphone
##232338##	Find out the MAC address and Wi-Fi information
##232337##	Will show Bluetooth address
##3264##	Displays information about RAM
##1234## ,	Let's learn everything about the software part
##2663##	View screen sensor data
*#34971539#	Displays information about installed camera sensors
#0#	Used for comprehensive smartphone test
##0##*	Useful for testing screen
##2664##	Runs a display sensor test
##0842##	Performs a vibration test
##0289##	Useful for sound testing
##1575##	Starts GPS module testing
##7262626##	Used to check mobile communications
##7780##	Resetting your smartphone - completely or partially
#*5376#	Erases all SMS from your smartphone
#*3851#	Useful for rebooting the device
*#2263#	Setting up network ranges
##273283255663282##*	Calls backup files

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 developers use to test and set 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.

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 - “Launch the MTK engineering 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 installed firmware Cyanogen Mod. 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.

Shortcut Master utility

The Shortcut Master program is designed to work with shortcuts and system applications: creation, search, deletion. 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.

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:

Install and run the program. Link to Google Play: https://play.google.com/store/apps/details?id=com.farmaapps.filemanager&hl=ru.

If the application supports installing root rights on your device, then on the screen you will see a list of possible actions, among them - “Get root”. Select this item.

Choose one of the preset root methods.

The program will begin installation.

At the end of the procedure, you will see a success message. root installation access.

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

The appearance of the engineering mode and the ability to adjust parameters 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 - menu item names may vary depending on various models devices! 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.

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.

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

Video: adjusting sound parameters in the engineering menu

Battery: Disable unused frequencies

Smartphones quickly consume 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.

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, it allows you to manage 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 the 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.

Service codes for Android devices

In addition to the technical menu, secret USSD codes - combinations of numbers and symbols, which the user types by typing to perform an action, allow you to control the functionality of Android smartphones. 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 damage to the device.

In smartphones and tablets based on the operating system Android systems there is a so-called engineering menu in which hidden additional settings devices. The settings are usually intended for specialists. However, if desired, a simple user can also use them, for example, to increase the sound on his smartphone.

How to enter the engineering menu? Let's show an example on a smartphone based on an MTK (MediaTek) processor.

Open the Phone app.

Dial the following combination - *#*#3646633#*#*. In the screenshot below, the symbol at the end is missing, because when you enter the full combination, the engineering menu immediately opens. If nothing opens for you, try pressing the call button.

The engineering menu has opened in front of you.

Here you will see many different items and parameters, many of which can be changed.

You should only change parameters if you know exactly what you are doing. If you don’t know, it’s better not to touch anything in the engineering menu to avoid problems.

You can also download an application for MTK. On Google Play Market Write mtk engineering mode in the search and you will see many applications that support the engineering menu. The application only works for devices based on MediaTek processor.