How to enter the engineering menu on Android. How to enter the engineering menu on Meiza
To ensure that software developers and testers mobile devices could obtain some system information and debug the functions of the smartphone, the Android OS contains some hidden features. Among them are connecting to a PC in developer mode, viewing detailed information about networks and hardware, etc. One of the tools for this is the engineering menu.
Engineering menu- This 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. The appearance of the engineering menu is different different smartphones, depending on the SoC manufacturer and 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
The engineering menu differs on different platforms; 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 communications. 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 - full list usually available only on the main page (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) TDD-LTE was enabled in this way, 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 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– this is an opportunity to record the IMEI of a smartphone. In the appropriate item, you can enter the device identification number 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 a non-removable cover, this identifier is not written under the battery.
Connectivity tab
In this tab, functions for testing and fine-tuning the Bluetooth module, radio receiver and Wi-Fi are available. 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 configuration hardware. 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. Top points 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 the speakerphone. The last point is a combined one, it is responsible for speakerphone with headphones 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 increase the values for this division (and lower levels) 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. The maximum level corresponds to a value of 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. Codes for entering hidden settings may also not be suitable in some cases; we cannot guarantee their 100% functionality. In addition, everything you do with your smartphone is done at your own peril and risk, since incorrect setting 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.
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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 carries for 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 special application, which is available on almost every 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 in the system by default 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. It can be accessed using third-party programs.
The engineering menu is hidden due to the fact that careless use of its capabilities can lead to damage to the device. Please be careful when making any changes.
How to enter the engineering menu on Android
A secret application cannot be launched through the regular interface. You can enter the engineering menu this way:
- Open the calls window to enter a phone number using 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 symbols, which contains Special symbols(*, #) and numbers. For example, for Samsung phones the engineering menu is launched with the following sequence: *#*#4636#*#*. The screenshot below shows the codes for different manufacturers gadgets.
If nothing happens 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 parameters will be inaccessible.
Mobileuncle Tools
The program has advanced features. Can be viewed and edited basic settings, update firmware, repair IMEI and improve GPS signal. The utility displays full specifications memory, screen, sensor.
MTK engineering menu
Program for gadgets with MediaTek processors. Loads engineering functions successfully, but there are errors with saving parameters. They may reset after a reboot.
Recovery Mode
This mode for developers is useful when serious problems arise with the gadget. If your tablet or smartphone does not turn on, and you cannot get into the regular menu, you will be able to launch recovery mode.
To start, use the following combination: the power key and the volume down or up button. In some cases it is necessary to additionally press Home. Press and hold the indicated buttons until the download begins.
IN this mode The most useful section is wipe data. With its help it starts full reset, and the device returns to factory settings. You will receive a clean phone, and all data and applications will be lost. Resetting helps in a situation where you have gone too far with the changes in the engineering menu, setting invalid values.
Shortcut Master utility
The software allows you to work with shortcuts and system programs(creation, search, deletion). There is no function for direct entry into the engineering menu, but you can see a list with secret teams, which operate on your gadget.
By clicking on the command name, the user is shown a drop-down menu with the “Run” option. The utility is convenient, no extra steps are 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 launch the software.
- If the utility supports installing root rights on your gadget, then the “Get root” option will be displayed on the screen. Select this item.
- From the preset methods for obtaining root, select one.
- The software will begin installation.
- After completing the procedure, a message will be displayed indicating 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 mid-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 activate certain BandModes (different frequencies for 2G/3G/4G operation), disable data transfer in the background, or check the operation of SIM cards.
- Connectivity. Wi-Fi setup, Wi-Fi CTIA, radio, Bluetooth settings. In the settings you can 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: sound levels of speakers and headphones, microphone, various camera parameters (focus, HDR, ISO adjustment, photo aspect ratio and much more), operation of sensors (calibration), touchscreen, etc. This category It’s quite global and large; you need to understand all sections and have skills and serious knowledge.
- Location. In this category, GPS operation is configured, you can conduct testing, see the number of satellites found.
- Log and Debugging. This category contains logs of the battery (charge percentage, temperature, operating time, voltage) and other functions that are little known to the average user.
- Others. Contains two functions that are unknown to most users.
Engineering menu settings
Possibility of adjusting parameters and appearance The engineering menu may differ depending on the model of smartphone or tablet. Users in the menu change camera settings and apply recovery mode.
Volume Boost
If your gadget does not ring loudly 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 listed 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 speaker tone during calls, 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 microphone sensitivity. To do this, select Normal mode, then Mic. For all levels we assign the same microphone sensitivity value. Press the SET button, then reboot and check whether the interlocutor can hear you better.
Battery: disable unused frequencies
Phones quickly consume battery life running applications, network connections and maintaining cellular communications. 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 operates, 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 battery power.
Open the Band Mode section in Engineer Mode. There we turn off unused frequencies. To do this, uncheck the corresponding boxes: PCS1900 and GSM850.
When the smartphone supports 2 SIM cards, open the SIM1 and SIM2 items one by one, and then perform the specified 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 the networks that are not used in Russia: WCDMA-CLR-850, WCDMA-800, WCDMA-PCS 1900. Press the SET button again. To enable scanning for networks that you have disabled, you need to 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 photos and process them in RAW format so that they have more editing options. The desired image format allows you to select the technical menu.
Find the Camera section in the menu, where we select “Capture Type”. Set the photo to RAW format and press SET. In the Camera section, you can set the ISO value, increase the size of pictures, enable HDR shooting for greater detail, and set the frame rate for video.
Secret codes of the Android engineering menu
In addition to the engineering menu, you can use secret codes to access different options. The screenshot below shows the most useful and popular codes.
Users mobile devices The Android engineering menu is often confused with the developer menu, although the vast majority of users know nothing and are not even aware of its existence.
But those who don’t chase new products and don’t buy smartphones/tablets every time they appear new version Android also dream of expanding the capabilities of their device.
To solve the problem, you can go in several ways:
- obtain superuser privileges (root rights);
- install several applications that add new features and provide access to features hidden from the user’s eyes;
- use the developer menu (mainly for comprehensive verification and testing of the device);
- go to the internal system menu (engineering)
We’ll talk about the purpose and capabilities of the latter, having previously found out how you can get into it on various gadgets, firmware and editions of the mobile OS.
How to log in
The most common calling option on an Android device is to enter a combination "*#*#3646633#*#*".
Attention! There are a couple of nuances here:
- firstly, after entering the combination, you do not need to press the call button; a couple of seconds after entering the last asterisk character, the required interface will appear on the smartphone screen;
- The method is applicable to most, but not all devices and firmware versions, especially to Chinese devices;
- The appearance and functions provided may differ on different devices (number of categories, names, differences in versions, etc.).
On other models you should try entering *#*#4636#*#* or *#15963#* . Combinations for mobile devices from the most popular manufacturers are shown in the table below.
| Samsung | [*#*#4636#*#*] [*#*#8255#*#*] |
| LG | [*#546368#*818#] |
| Sony | [*#*#7378423#*#*] |
| Huawei | [*#*#2846579#*#*] [*#*#2846579159#*#*] |
| Acer | [*#*#2237332846633#*#*] |
| HTC | [*#*#3424#*#*] [*#*#4636#*#*] [*#*#8255#*#*] |
| Fly Philips Alcatel | [*#*#3646633#*#*] |
If you can't call
It is very rare, but it may be that none of the above combinations resulted in the required window being called. In this case, download the Mobileuncle MTK Tools application (removed from the Play Market).
It works similarly to the methods described above, with the difference that the commands for entering codes are sent to the mobile operating system automatically, determining its version and model of the gadget after calling the “Engineer Mode” command.
Before using the program, it is strongly recommended to create a backup of the firmware; it is not for nothing that it has been removed from the application store - many dozens of users have “killed” the firmware of their devices due to inept and careless handling of the software. In addition to calling options, the program allows you to:
- free up permanent and RAM memory;
- restart recovery;
- manage autostart;
- backup, restore and edit IMEI;
- display detailed information about the smartphone hardware.
To gain access to all the features of Mobileuncle MTK Tools, as well as the capabilities of the options, you should acquire root rights for your mobile device.
Composition of the extended interface
Engineer Mode for the user is presented in the form of a multi-tab window, where each tab contains certain types of functions.
Telephony
The first tab contains functions for performing general phone setup: testing the network and obtaining information about the network technologies used, changing GPRS parameters, configuring the camera, and a lot of sub-items that are incomprehensible to a beginner.
Connectivity
Responsible for changing parameters and displaying information about ports for communication:
- Bluetooth;
- Wi-Fi module;
- FM receiver if available.
You can request comprehensive information about each module, test its operation, change the configuration and look through the logs.
Hardware Testing
The title of the section indicates that there are tools for working with hardware: testing it, extracting any information about hardware components, changing their operating modes.
On Android it supports more than a dozen audio playback modes for various conditions (games, calls, alarms).
As for the camera, a huge range of parameters is available here, which includes changing preview videos and specifying the default video frame rate and many other items.
To check the stability and performance of the central processor, you can run a processor stress test through it.
Changing its voltage and operating frequency in order to overclock or save the battery should be done with extreme caution and being aware of the possible risks.
The processor has the option of putting it into sleep mode under certain conditions, as well as turning off the display.
Engineer Mode also contains a huge number of items for retrieving information and debugging the operation of the processor, touch display, random access memory, sensors.
There are functions to stop removable flash memory and change the operating mode of the USB port.
Location
For those who like to use GPS capabilities, who sometimes lack its settings, there is an abundance of items available in this tab.
Resetting to original settings
It has never happened to anyone that the thirst for experimentation led to small disasters.
If something goes wrong during use, everything can be returned back, especially if a backup copy of the firmware was made.
Even if you haven’t acquired it, you shouldn’t lose heart, we’ll reset the device to factory settings and that’s it.
- The first and most reliable way– rollback the system state to reserved.
- Resetting the firmware via recovery (BackUp and Wipe).
- Download Mobile Uncle, call “Restart to Recovery Mode” and click on “BackUp”
The engineering menu is a truly indispensable tool for fine-tuning a smartphone/tablet, allowing you not only to control full control your gadget, but also, sometimes, to return one of the broken functions. However, its careless use can lead to problems.
The engineering menu provides access to manual setting the “hardware” part of the smartphone. To login you need to enter special code or install the application, but there are a number of features that are worth paying close attention to. If you were unable to enter the engineering menu the first time, then you did not take into account the features of the device. It is worth immediately clarifying that any interference with the operation of the device may lead to its inoperability and loss of warranty.
Hidden capabilities of the system
At the last stages of setting up a smartphone, developers test the system for errors and check the operation of all sensors on the device. Especially for this, Android has a special subroutine built into it - the engineering menu, which provides access to hidden settings of the Android OS and allows you to reconfigure them yourself. In addition, the menu contains detailed information about the device. The full list of menu options is known only to the platform developers, so you should make your changes with caution.
Secret paths of developers
To enter the engineering menu, dial the code *#*#3646633#*#*. On some models, you additionally need to press the call key. It is worth considering the features of phones: for different brands there are different combinations of numbers. The Android version does not affect the functionality of the engineering menu.
Enter a special code to enter the engineering menu
If no problems arise, you will be taken to an additional menu for fine-tuning your smartphone.
Enter the menu subsection
Depending on the system version and processor model, the engineering menu may be incomplete or missing. In the photo above there is a subsection of the menu with elements for testing smartphone sensors, setting up a USB connection, and performing internal and external memory tests.
If it doesn't work out the first time
Not all devices can access the engineering menu. Let's look at a number of common problems and ways to fix them.
Android is a complex Unix-based operating system. If you can’t do something, you haven’t taken into account all the nuances of the functioning of a particular subroutine.
List of special codes
One of the common reasons for blocking entry to the engineering menu is an incorrect special code. The combination of numbers depends not only on the device model, but also on the type of processor. For example, most devices based on the MTK chip are equipped with an engineering menu. If we talk about Qualcomm, not all smartphones based on this platform have an engineering menu built into them. The list of combinations is given in the table. If you don't find the one you need, try entering a different combination.
Table: code options for different Android models
DIY engineering menu
If none of the special codes work, don’t worry. There are many applications on the network with engineering menu functionality. It is worth noting that the MTK prefix in the names eloquently indicates compatibility only with MediaTek processors.
The first option is Mobileuncle MTK Tools. In addition to the necessary set of settings, this program has several additional functions: firmware update, recovery update, GPS receiver enhancement mode and much more.
Mobileuncle MTK Tools provides a set of settings
Another program is MTK Engineering Mode. The program completely replicates the standard engineering menu.
MTK Engineering Mode repeats the standard engineering menu
For those whose device is not equipped with an engineering menu, there is another option: installation third party firmware. Assemblies from third-party developers often contain a wide range of customization settings.
Where to begin
When you first enter the menu, you can get lost in the jungle of parameters.
Engineering menu settings
Settings open up enormous possibilities for users.
Depending on the hardware platform, some items may not be available or may be missing.
In this section you can configure mobile communication settings.
- Auto Answer. You can enable or disable automatic answering of an incoming call.
- Band Mode. Allows for manual mode choose frequency range for GSM module operation. You will see all technologies and frequencies for them supported by your smartphone model. If you wish, you can uncheck bands that are not used by your carrier. This will significantly save battery power. To save the settings, press the set button.
- CFU Setting (Call forwarding Settings). Option enables or disables conditional forwarding. It must be supported by the operator.
- AT Command Tool. A utility for developers that supports AT commands. This menu item will be of interest to programmers and developers. Using this menu, you can perform various queries directly to the system without visual add-ons.
- Modem Test. Configuring compatibility of the “access point” option with various types connected devices.
- Network Selecting. Here you can select mobile communication standards (GSM, WCDMA, LTE). For additional energy saving, turn off unused ones.
- NetworkInfo. Select one or more options to display information about the status of cellular communication parameters. After selecting, open the additional menu (three dots on the right in top corner) and click Check Information. This option is convenient for checking the quality of cellular operator services.
- GPRS. Setting up a connection to the mobile Internet, selecting an active SIM card (if there are several of them).
- HSPA Info. Information about the 3G network if supported by your mobile operator.
- Mobile data service preferred. The Internet will be given priority over voice traffic to increase data transfer speeds. Incoming calls may not go through.
- Fast Dormancy. Allows you to save battery energy in third generation networks. The option must be supported by your telecom operator.
- RAT Mode (Phone Info). Allows you to select the priority communication standard. You should change the parameter carefully, it blocks the settings of the Network Selecting item.
- RF De-sense Test. You can select a frequency range and a specific channel to check the communication quality.
- SIM ME Lock. This subsection allows you to configure the regional parameters of the GSM module (MNC, NCC) manually.
Photo gallery: mobile communication parameters
We get to the main window of the subsection Enable or disable auto answer Enable or disable conditional forwarding Configure the “Modem” mode Display information from the GSM module Configure Mobile Internet Select the priority of the connection type Configure the operation of the 3G mode Select the type of mobile connection Check the network power Configure regional communication parameters
Wireless interfaces
This section is intended for testing wireless data transmission modules (Wi-Fi, Bluetooth, FM).
- Bluetooth. A wide range of settings and tests for the module of the same name in order to check the reception and transmission of data, and start the debugging mode.
- CDS Information. Information about the parameters of wireless interfaces.
- FM Receiver. Checking the FM module of the device.
- Wi-Fi. Testing the module for transmitting and receiving information on the specified frequency channel.
- Wi-Fi CTIA. Recording logs of wireless technology tests.
Photo gallery: wireless data transmission
Select the verification section wireless modules devices Check the bluetooth operating mode Find information about wireless interfaces Configure the FM module Check the operation of the WiFi module Write data about checking the WiFi module to a log file
- Audio- fine tuning sound playback settings.
- Camera - a set of parameters for taking photos and videos that are not included in the Camera application.
- Driving Current Camera - takes current readings from the sensor in the camera circuit.
- CPU Stress Test - performing tests of all subsystems of the central processor.
- Deep Idle Setting - disable sleep mode in standby mode.
- Sleep Mode Setting - sleep mode settings.
- ChargeBattery - View battery information.
- Sensor - sensor calibration.
- Multi-Touch - checks the number of available points for simultaneously pressing the screen.
- Location Engineer Mode - checking the parameters of the GPS module.
Photo gallery: equipment testing
Go to the section for checking electronic components Adjust the volume of the conversation speakers Adjust the camera's power supply Adjust the standby mode Adjust the frequency of the central processor Adjust the sleep mode View information about the battery Configure touch screen Checking the capabilities of the multi-touch function Setting up the GPS module
Adjusting the speaker volume
In the subsection you can adjust the overall volume level, headphone and speakerphone volume.
You should be careful when changing volume settings. All parameters are individual for specific model devices. Incorrect configuration may result in poor hearing performance.
There are a number of general parameters:
- MaxVol - general volume level. The range of values is from 0 to 160. Than larger number, the higher the volume.
- Sph - volume during a telephone conversation.
- Mic - microphone sensitivity.
- Ring - speaker volume for incoming calls.
- Media - volume level when watching movies, listening to music and playing games.
Very often, users are unhappy with the speaker volume during a conversation. To improve audibility, go to the Normal Mode menu and change the Sph parameter to 150. If the phone rings quietly when incoming call, then you need to increase the value of the Ring parameter. We advise you not to set the value above 200, as this may damage the speaker. To make you better heard, change the Mic parameter from 100 to 172. This will increase the sensitivity of the speaker.
ROOT is a panacea for a smartphone
On a smartphone without root rights functionality The engineering menu is limited: some items are not displayed, changes made are not saved. For any intervention in the operation of the smartphone, you need open access into the system. Don't forget that gaining root access can damage your gadget and will void the device's warranty. We strongly recommend doing backup important information to a memory card and synchronize with your Google account and remove it to avoid data loss. To unlock full access you can use one of the existing methods to enter the system.
Installing the application directly on the device (KingRoot)
Superuser access can be opened from a smartphone using special programs. Let's look at the sequence of operations using the KingRoot program as an example:
After this, you can safely change the parameters in the engineering menu, all changes will be saved. If the result is negative, we move on to the next method.
Obtaining superuser rights via PC (Kingo Root)
This method is slightly different big amount preparatory activities:
The engineering menu is used to configure the device and test the operation of the hardware. This is a built-in system routine that is an indispensable tool for both experienced users and newcomers to the world of mobile devices. However, it should be noted that manipulations with the engineering menu can render the gadget inoperative.
A beginner who bought a smartphone or tablet based on operating system Android, 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;
- determination of the level of 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 all versions of Android, allowing you to configure individual device functions.
Main codes for entering the engineering menu
The commands you enter vary for different brands of devices - select the ones that suit you. 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
Android Factory Service Codes Showing technical information information about the device are often not linked to the manufacturer. Basically, they are all built into Android by default. Command “numbering” range agreed upon by Google- as the creator of the operating room Android systems- with manufacturers of tablets and smartphones.
Table: Android factory service codes
| Parameter opened by typing code | Code to be dialed |
| Wi-Fi MAC address | *#*#232338#*#* |
| Information about the active WLAN network | *#*#232339#*#* |
| GPS check | *#*#1472365#*#*, *#*#1575#*#* |
| Bluetooth version | *#*#232331#*#* |
| Bluetooth MAC address | *#*#232337#*# |
| Loopback Batch Tests | *#*#0283#*#* |
| Touch screen version | *#*#2663#*#* (test *#*#2664#*#*) |
| Checking the motion sensor | *#*#0588#*#* |
| Checking the screen | *#*#0*#*#* |
| Checking the vibration alert and backlight | *#*#0842#*#* |
| Melody test | *#*#0673#*#* |
| RAM version | *#*#3264#*#* |
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
| Called parameter or setting | Service code |
| To know serial number IMEI | *#06# |
| Settings and details | *#*#4636#*#* |
| Android OS version | *#2222# |
| Erase all SMS messages | #*5376# |
| Smartphone and battery usage statistics | *#*#4636#*#* |
| Reset Google account and others system utilities without removing pre-installed software. However, applications stored on the memory card (SD) will remain unchanged. | *#*#7780#*#* |
| Reset settings and clear user files from internal memory, reinstalling the smartphone firmware. There is no confirmation prompt, but you can have time to remove the battery - and then restore files and settings from a backup using an application on your computer. | *2767*3855# |
| Information about the built-in camera and its settings. Firmware update. | *#*#34971539#*#* |
| Changing the mode of operation of the “End Call” button (“On/Off”). | **#*#7594#*#* |
| Show the file copy screen. Can be done backup copy all your data. | *#*#273283*255*663282*#*#* |
| Service mode - launching all kinds of checks (click on Menu), reconfiguring the smartphone in service mode. | *#*#197328640#*#* |
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 resetting the Android system, deleting all user Google data A message will appear on the screen asking you to confirm the reset.
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 particular brand of device are suitable - this is how the manufacturer protects inexperienced 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 be harmful, such as software Android and the device itself.
Often, instead of general service commands, more specific ones are triggered. If, despite all your attempts to “reach out” to the engineering menu, none of the service codes work, you need special applications.
Install free application Mobileuncle Tools - it will differentiate 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
To ensure that settings made using engineering Android menu, have been preserved, you need to get out of it correctly. While in any section of the engineering menu, use the on-screen “Back” key 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 pre-installed 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 one may be suitable - or, conversely, the most “fresh” one - Android version.
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.
- Install a custom (modified) version of Android on your smartphone. It already includes software component Superuser (“Superuser”), which gives access not only to the engineering menu, but also to the system folder.
- Download from the Android Market any of the apps that can hack Android without using a computer. Suitable here different programs: Universal AndRoot, Unlock Root, z4root, Revolutionary, etc. Not all of them can help - you will have to test everything until it works.
- 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 earliest versions of Android (1.x, 2.x), all service settings were on English language. 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.
The Android engineering menu is one of the most useful tools for an “advanced” user, preventing him from wasting the hardware resource of his device and the resource of cellular and wireless networks wasted. 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 script 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.
