Code for samsung entrance into engineering

Engineering menu functions

The Huawei engineering menu offers a wide variety of settings for advanced users. On most models of phones of the company from the Middle Kingdom, volume control, camera settings, navigation, telephony and many other functions are available, which you can alter at your discretion.

code, samsung, entrance, engineering

In fact, there is nothing difficult in the adjustment itself. Just search for the parameter you want, such as the volume level, open it and experiment with the values ​​until you achieve the perfect result for you. However, we remind you once again that you should only change those parameters in which you are sure, otherwise you risk getting not a perfectly fitted smartphone, but a piece of annoying plastic.

How to get to the engineering menu?

In order to get into the engineering menu of a phone based on the Android operating system, you need to enter a certain secret code in the phone dialing menu. Most often, on Android devices, you need to dial the combination ###. This code is suitable for most Android smartphones, but sometimes developers can change it, for example, entering the Huawei engineering menu most often occurs using codes ### or ###.

Also, codes can very often change depending on the specific model of the device and the type of single-chip system used in it. Also, it often depends on the single-chip system of the phone whether the smartphone has a built-in engineering menu at all or not. So, on devices with MTK processors, there is such a menu on almost every device, and on devices equipped with Kvalkom processors, on the contrary, in most cases this menu is completely absent.

The code should be applied as soon as you type it on the call screen, but on some phones, sometimes you also need to press the call button for the code to work normally. It is also worth noting that the code must be entered, and not copied, since otherwise it will not work. It is also very useless to save such codes in the phone book, that is, manual input is a prerequisite for the code to work.

What is the engineering menu?

The engineering menu provides the user with access to manual configuration of almost all phone parameters. Usually, engineers use the engineer mode at the stage of final configuration of the device before it goes on sale. With its help, they check the device for various errors, malfunctions, and also check the operability of all systems of the device. In addition, the engineering menu contains detailed information about the capabilities of the device and its programs.

The engineering menu is embedded directly into the Android program, however, on some phone models, the developers deliberately remove it from the phone after the final check. In such cases, the owner will be already problematic to customize the device “for himself” directly from the phone and he will either have to use special programs that can be downloaded, for example, on Google Play, or use third-party firmware.

The engineering menu for Huawei smartphones is usually always in place and is never deleted, so if you did not manage to get into these settings the first time, then most likely you simply did not take into account the unique features of your device. Also, it will not be superfluous to repeat once again that if you are not sure of what you are doing, and working with such menus is new to you, then you should carefully consider this step. Remember that unsuccessful settings in the engineering menu may not improve the functioning of the smartphone, but, on the contrary, make it much more inconvenient, while if you change the system settings, you lose the warranty and bear full responsibility for the device yourself.

Huawei smartphones engineering menu

Many of us have long fallen in love with smartphones based on the Android operating system. They have always won over with their unpretentiousness, good reliability, as well as convenience and ease of use. The same can be said, in particular, about the smartphones of the well-known company Huawei, which are also based on this operating system. A company from the Middle Kingdom always keeps up with the times and equips its phones with the latest versions of the operating system and multifunctional firmware, trying to keep up with the generally recognized leaders of the Android smartphone market.

However, few of us know that the already quite comfortable Huawei phones can be made even better with the help of fine tuning “for ourselves”. What we can customize in the main menu of the phone is only the tip of a huge iceberg, the rest is hidden from users in order to avoid the failure of the device. However, people who deal with mobile phones not just at the user level, but, for example, work in the service, easily get access to advanced settings on almost any phone, resorting to the help of the engineering menu.

Running a little ahead of myself, it’s worth saying that inexperienced users really shouldn’t go to this “forbidden forest”, so as not to ruin their device through carelessness. But if you are confident in yourself and think that you understand the technology at a sufficient level, then the Huawei engineering menu is exactly what you need for the most delicate settings of your device.

Wireless interfaces

This is also a very interesting section, which is intended for testing a wide variety of modules designed for wireless information transfer, for example, Wi-Fi or Bluetooth:

  • Bluetooth. Offers a very wide range of settings and tests for the Bluetooth module in order to test the receipt and transmission of information, as well as to start debug mode.
  • CDS Information. Data on parameters of wireless interfaces.
  • FM Receiver. FM module check.
  • Wi-Fi. Testing the Wi-Fi module for receiving and transmitting data on a specific frequency channel.
  • Wi-Fi CTIA. Wireless Test Logging.

Commands for accessing the menu

If you do not know how to enter the engineering menu of a Huawei-smartphone, or you cannot do it, then this is not a reason to be upset. Most of the devices manufactured by Huawei support the so-called “service codes”, which partially duplicate the functions of the engineering menu.

Service codes have been used in mobile phones for a very long time, and many of them appeared long before the first Android smartphones came out. However, although such codes repeat some of the functions of the engineering menu, using them is not at all so convenient and completely unsafe. Some of them can literally delete all data stored on the phone or disable certain functions of the device. So, if you are one hundred percent not sure what this or that code means, we do not recommend you to use it for the simple reason that they can disrupt the normal functioning of your phone.

Now let’s see some examples of the most useful engineering codes in our opinion:

  • #. using this code you can find out your IMEI address.
  • ###. this code gives you some information about the phone, namely: machine data, battery information, battery statistics and phone usage statistics.
  • ###. this code resets to the factory settings such as: Google account data, system data and settings, downloaded applications.
  • 27673855 #. this code performs full formatting of the smartphone. So think twice before using it.
  • ###. this code is used to obtain information about the smartphone camera.
  • ###. used to change the on / off button modes.
  • ###. using this command you can open the file copy screen and use it to back up your most valuable photos or audio recordings.

There are also many other service codes that allow you to check and tune your telephone very carefully. However, due to the rather large number of them, this, perhaps, will be a topic for a separate article, and we are moving on.


One of the main points that catches the eye when you first enter the engineering menu of the Android smartphone Huawei, this is the telephony menu. In this menu, you will have access to many useful settings, including such important items as:

  • Auto Answer. Here you will be able to enable or, conversely, disable automatic answer to an incoming call.
  • Band Mode. Here you can manually select the frequencies for the GSM module. All frequencies supported by your phone will be shown in this menu. You can uncheck the bands that your mobile operator does not provide, which will ultimately save your battery power.
  • CFUSetting. This option enables or disables conditional call forwarding.
  • AT Command Tool. Developer utility that supports AT commands.
  • Modem Test. Fine-tuning compatibility with various types of devices.
  • Network Selecting. Here you can also select the mobile communication standards (GSM, WCDMA, LTE). For more energy saving, turn off unused.
  • NetworkInfo. A very convenient option for checking the quality of services of a mobile operator.
  • GPRS. Setting up mobile internet connections. A choice of active SIM is also available.
  • HSPA Info. Information about the 3G network in the event that this type of service is supported by your telecom operator.
  • Mobile data service preferred. Using this item, you can increase the priority of the Internet over voice traffic. However, be careful, as incoming calls in this case may sometimes not reach.
  • Fast Dormancy. Allows you to save some of the phone’s energy in 3G networks.
  • RAT Mode (Phone Info). With the help of this menu you can select the most used communication standard. However, use with caution, as these settings will block the Network Selecting item.
  • RF De-sense Test. Choosing a frequency range and a specific channel for testing the quality of communication.
  • SIM ME Lock. Allows you to configure the regional parameters of the GSM module in manual mode.

Hardware Testing

This service menu of Huawei smartphones offers ample opportunities for testing and configuring the main equipment of the phone. In this engineering submenu, the user will have access to such items as:

  • Audio. Allows detailed adjustment of sound playback parameters.
  • Camera. Adjustment of photo and video parameters that are not included in the standard camera application.
  • Driving Current Camera. Reads amperage data from sensors in camera circuits.
  • CPU Stress Test. Testing all processor subsystems of the device.
  • Deep Idle Setting. Using this tab, you can disable the use of sleep mode when the machine is in standby mode.
  • Sleep Mode Setting. Adjusting sleep mode settings.
  • ChargeBattery. Details of the battery and its charge.
  • Sensor. In this tab, the user can finely calibrate the device sensor.
  • Multi-Touch. In this menu you can check and adjust the number of points of simultaneous pressing of your screen.
  • Location Engineer Mode. Here the user can check the data of the GPS module.
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This, perhaps, is all, dear friends. We hope this article was useful to you and answered most of your questions. We wish you a great customization of your phone, and may it only bring you pleasant emotions.

What features are available

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

    To do this, after entering the section, select “Engineer Mode”

  • Then you will need to experiment with the values, as a rule, the numbers can be set from 0 to 160. Where 0 is no sound at all, and 160 is the maximum volume.

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

How to enter the Android engineering menu

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

How to get to Engineering Menu

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

  • Samsung. ### or ###
  • HTC. ### or ### or ###
  • Sony. ###
  • Huawei. ### or ###
  • MTK. ### or ###
  • Fly, Philips, Alcatel. ###

After dialing the code, the “Engineering menu” should immediately open, if this did not happen, you should try to press the call button.

How to get to the engineering menu on Android

I could not enter the engineering menu on Samsung

I could not enter the engineering menu on a Samsung tablet

I can not enter the engineering menu, please help me version sm-g313hu duos 2

Hello. What do you mean by “correct”?

Hello. There is no engineering menu on Samsung devices. But, there is some kind of this menu, which is called “Developer options”. But, these parameters are locked. To unlock them, do this. Go to device settings. Go to the “About device” section. Find the line “Build number” here. Click on this item quickly about 20 times in a row. The inscription “Developer mode unlocked” should appear. After that, “Developer options” will appear in the device settings. But, I will say right away that I DO NOT recommend climbing in these parameters, since you can cause irreparable damage to the device, which will lead to expensive repairs or even damage the device without the possibility of repair.

Hello. There is no engineering menu on Samsung devices. But, there is some kind of this menu, which is called “Developer options”. But, these parameters are locked. To unlock them, do this. Go to device settings. Go to the “About device” section. Find the line “Build number” here. Click on this item quickly about 20 times in a row. The inscription “Developer mode unlocked” should appear. After that, “Developer options” will appear in the device settings. But, I will say right away that I DO NOT recommend climbing in these parameters, since you can cause irreparable damage to the device, which will lead to expensive repairs or even damage the device without the possibility of repair.

Hello. There is no engineering menu on Samsung devices. But, there is some kind of this menu, which is called “Developer options”. But, these parameters are locked. To unlock them, do this. Go to device settings. Go to the “About device” section. Find the line “Build number” here. Click on this item quickly about 20 times in a row. The inscription “Developer mode unlocked” should appear. After that, “Developer options” will appear in the device settings. But, I will say right away that I DO NOT recommend climbing in these parameters, since you can cause irreparable damage to the device, which will lead to expensive repairs or even to damage the device without the possibility of repair.

The engineering menu does not open for me.Phone Motorola moto 3g

Hello. And thank God that it does not open. This menu is not made for inexperienced users and you could cause irreparable damage to the device. Trust my experience, you don’t have to mess with system parameters, it leads to expensive repairs and nothing more.

I bought a phone vkworld f1 Android 5.1 I can’t set up the mobile Internet, please tell me in advance

Hello. Mobile Internet is nowadays configured automatically. Call the Support of your mobile operator, connect with the operator and say that you need to set up the mobile Internet. You will either be told how it is configured, or they will send you an SMS with automatic settings. In general, the settings depend on your operator. So call support anyway.

Hello. How to make the sound louder on Samsung Galaxy tab 3 sm-t311? I cannot enter the engineering menu, and I did not find such settings in the developer’s parameters. Need to amplify the sound at the headphone output.

on the breathalyzer I can not enter the engineering menu, I enter the code, it is simply reset after pressing the last symbol

HTC. ### or ### or ###. 0 efect ?? 516 dual SIM. HE PO6OTAET

on the breathalyzer I can not enter the engineering menu, I enter the code, it is simply reset after pressing the last symbol

Hello, I can not find audio in the engineering menu Huawei gr3. What to do?

how to enter the engineering menu on the Samsung Galaxy a7?

Not included. I have fly is4516 octa tried to pick up the phone after typing a combination and nothing happened

Not a single code works, for Samsung Galaxy Core 4G G386F, to enter the engineering menu, I climbed the entire Internet in Russia and in the West, I already tried it, all the codes that came across on the Internet on any Samsung and Android, installed better Cut applications, Mobile dyatka (mobill uncel) does not help anything: (((maybe there are any nib applications for the Samsung or a code for this model. Help mi pliz.

Hello. Not all codes work and not on all models. The fact is that some manufacturers simply block this menu, so that inexperienced users do not climb in the system and hardware settings and cannot harm the device. I do NOT recommend that you go to the Engineering menu and change anything there. There are “Developer options”. But he does not recommend climbing here either. These parameters are opened as follows. Go to settings \ about device. Here we are looking for the item “Build number”. It is the assembly NUMBER. Press quickly ten times in a row on this item and you will see the inscription “Developer options unlocked.” Next, go back to Options and look for Developer Options. There are some functions of the engineering menu here.

Hello. I can not help you. I do not have this model of the device at hand and I cannot check everything. Why do you need this? Do you want to make the sound louder? I highly do not recommend doing this, since the sound quality will be just awful, and you yourself will want to return everything back, but only it is not always possible to return everything as it was. In addition, such changes can lead to quite serious problems, up to the fact that problems begin with the operation of the device or until the speaker burns out. And this, in turn, will require expensive repairs.

Hello. Engineering menu Samsung Galaxy A7 (2016) ###. USB debugging #.
A big request, if the codes do not work, unsubscribe in the comments with the full model code, and not just “nothing works”.

Good afternoon, tell me how to enter the engineering menu on MTK6582, Android 5.0, 4 cores 1.3 GHz each,

Hello. You were unable to enter the engineering menu? The fact is that the codes do not work on every phone. I don’t know all the codes, so you’ll have to look for the code for your phone yourself. It is possible that the manufacturer has hidden this function altogether and you will not be able to enter the engineering menu.

Hello. You were unable to enter the engineering menu? The fact is that the codes do not work on every phone. I don’t know all the codes, so you’ll have to look for the code for your phone yourself. It is possible that the manufacturer has hidden this function altogether, and you will not be able to enter the engineering menu. In general, the manufacturer Samsung has long hidden this function from users and the codes simply do not work on phones. This is done due to the safety of the device. The fact is that inexperienced users quite often disable individual components of the phone (the speakers are on, the screens stop responding to touches, and so on). These are all consequences of misconfiguration by inexperienced users. Trust my experience, it is better not to climb on your own and not try to improve something. The manufacturer has deduced the optimal parameters and you definitely cannot configure anything better.

Hello. I won’t tell you, because you shouldn’t go into the engineering menu. You will only make things worse with your settings. No wonder the manufacturer hides this function from users. Trust my experience, you shouldn’t go into these “jungles”, as you run the risk of turning your device into a brick.

Hello. I do not know. I don’t know all the codes. If the standard codes do not fit, then look for yourself. There is a lot of different information on the Internet. But, I will say right away that sometimes manufacturers simply block these codes and you simply cannot open the engineering menu. Yes, and I do not recommend going there at all and changing anything there, since the manufacturer already sets the most optimal parameters and you should not change them. The fact is that changing any parameters in the engineering menu with a high probability can lead to a bunch of problems, rather serious.

Doesn’t enter at all
And I pressed 300 times the build number
And I’ve tried everything in the world
And the program svsengrunner rocked. mmi connection error
Do I just need to configure gps. HELP.

Hello. You won’t set up GPS. Therefore, do not even try to enter the engineering menu. And clicking on the build number (you need to click very quickly) opens only the “Developer options”, in which you also cannot configure the GPS. If navigation does not work for you, then first check if there is a GPS sensor in your device at all. And if there is, but does not work, then specify which one is. And as a last resort, take it to a service center.

Good evening. Please tell me the code in the engineering menu DOOGEE SHOOT 2.
When I type the code ### then nothing happens. Although on DOOGEE X5 MAX PRO in the menu by this code comes. Maybe it’s Android 7 on SHOOT 2? Thank you in advance!

How to enter the engineering menu on Xioami Redmi Note 5a? To increase the sensitivity of the microphone?

Is there an option to set up a network only 4g on Samsung j1? there is no engineering menu but some programs?

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How to enter the engineering menu on the Samsung Galaxy J3?. Samsung Galaxy J3 2016 SM-J320H-DS

Ka go to the engineering menu for the Galaxy S5. Secret codes.

The engineering menu of the smartphone is a special section that makes it possible to expand or correct the settings and any specified parameters in the device system.

If the user needs to go there on his Samsung smartphone, you need to take simple steps. To eliminate various defects in the operation of your devices, you can contact the Samsung service center, addresses and other cities of Russia, you can find out by going to the official website at the link.

How to enter the engineering menu on Samsung

In order to enter the engineering menu of a Samsung Galaxy, Galaxy Note, Neo, Duos phone, you must write a specific command:

For earlier models, this is ### or ###.

After you write this command, the combination consisting of symbols will immediately disappear, and the engineering menu of your phone will open in front of you.

Testing ourselves. Samsung GT-I9300 Galaxy S3

#. This is the first service code I want to review in this post. By typing it on the keyboard in the phone, we will enter the so-called test mode, which allows you to test the main functions of the smartphone. Let’s go over all the points in more detail:

Melody. Check the spoken speaker. plays sound.

Vibration. Checking the vibration motor. the device vibrates periodically.

Speaker. Polyphonic speaker test. plays sound.

Dimming. Screen dimming test. screen dims.

Camera. check the main camera. switch to the photo mode with the main camera.

VT Camera. Check the front camera. switch to the front camera photo mode.

Bluetooth. Turns on Bluetooth and searches for devices.

TSP Dot Mode. Test the touch-panel “dot mode”. A cross appears on the screen where you touch the touch panel.

TSP Grid Mode. Testing the touch-panel “grid mode”. The display is split into many rectangular areas. If the area reacts to touch, then its color changes. For the test to complete successfully, each area must be responsive.

Accelerometr Sensor. Checking the operation of the accelerometer. Allows you to change the orientation of the image on the display. depending on how the user holds the device. In addition, many functions can be controlled. For example, changing music tracks by simply shaking the case, receiving calls, etc. Testing the auto-rotate function of the screen. The image flips depending on the rotation of the body. The arrow always points up.

Proximity Sensor. Check the proximity sensor. Applies only to phones with a touchscreen display. Tracks the distance from the device to the user’s face, and automatically locks the screen sensor when approaching close. Thus, you can safely put the device to your ear during a call, without fear that the phone will perceive touching the screen as a command. Placed on the front panel, usually above the screen. If the phone is not held to the ear, then the display will show “Release”, otherwise “Working”. Proximity sensor performance is easy to check by covering it with your finger or pen.

Light Sensor. Check the light sensor. A sensor that monitors the ambient light level. Allows you to automatically change the brightness of the screen depending on external conditions. for example, to work in twilight, the minimum brightness may be quite enough, while in the bright sun, the maximum is necessary. Thus, you can achieve not only the most comfortable level of brightness, but also significant battery savings. after all, not a high brightness, which is not always needed, the screen consumes more energy. Placed on the front panel, usually above the screen. With good lighting on the screen. 1, with bad. 0. For a quick check, place the phone under the light (on the display. 1), close the light sensor with your hand, 0 should appear on the screen.

#. This is the second service code, which will also be reviewed on the Samsung GT-I9300 Galaxy S3 smartphone. Has the following items:

Red Green Blue. Testing the display for the indication of RGB model colors The image changes its color (Red. red, Green. green, Blue. blue).

Receiver. Checking the earpiece. Speaker plays sound, picture turns white.

Vibration. Testing the vibration motor. The machine starts to vibrate.

Dimming. Screen dimming test. The screen is dimmed.

Mega cam. Check the main camera. Switching to photo mode with the main camera.

Touch. Test the touch panel. The display is split into many rectangular areas. If the area reacts to touch, then its color changes. Each area must be responsive to pass the test.

Sleep. Test the function of entering sleep mode. The device enters sleep mode.

Speaker. Test the polyphonic speaker. Begins to play sound.

Sub key. Testing sub buttons (menu, center, return). After clicking on one of the sub buttons, the image changes color.

Front cam. Checking the front camera. Entering Front Camera Photo Mode.

LED. Testing the LED indicator. The indicator lights up in red (RED), after touching the touch-panel it changes color to green (GREEN), after another touch it lights up in blue (BLUE).

LOW FREQUENCY. Check the spoken dynamics for the reproduction of low-frequency sounds, there are three frequencies to choose from (100 Hz, 200 Hz and 300 Hz).

Sensor Menu. To test the main sensors:

Accelerometr sensor x-angle, y-angle, z-angle. the values ​​of the angles of deviation from the axes of the three-dimensional coordinate system (0. 90 degrees), ACC Raw Data. their values ​​recoded into the decimal system (0. 1023). IMAGE TEST. testing the screen auto-rotate function. The image flips depending on the rotation of the body.

Proximity sensor At the distance of the device from the user’s ear is approximately equal to 3 cm. the proximity sensor is triggered. PROXIMITY: 0.0. the sensor did not work. PROXIMITY: 1.0. sensor triggered. The ADC parameter has values ​​from 0 to 255, 0. the object is at the maximum distance from the sensor, 255. as close as possible. With ADC = 15, the sensor is triggered.

Barometr sensor The barometer measures atmospheric pressure. BAROMETER. value of atmospheric pressure, hPa. hectopascal (102 Pa). ALTITUDE. altitude above sea level. Barometer Selftest. barometer self-test mode, if the value is equal to PASS, then the test is passed.

Lights sensor. Light sensor. illumination value (lux). On a full moon night, illumination 0.2 lux, sunrise in clear weather. 1000 lux. There are 4 levels of lighting: level 1, level 2, level 3 and level 4. Level 1 corresponds to poor lighting, level 4 to good. level 2 and 3 are intermediate between level 1 and 4.

Gyroscope sensor (gyroscope). The gyroscope tracks the speed and direction of a mobile phone in space. In a way similar to an accelerometer, it provides enhanced control capabilities that can be useful, for example, in games. Y, P, R. angles of rotation around the Z, Y, X axes, respectively. Gyro Selftest. self-test mode, if the value is equal to PASS, then the test is passed. Graph. graphical testing mode.

Magnetic sensor AZIMUTH, PITCH, ROLL. values ​​of angular deviations. Selftest. self-test mode, if the value is equal to PASS, then the test is passed. The black circle with an arrow is a compass, the arrow points to the North Pole of the Earth.

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The other day I dealt with the Samsung GT-I9300 Galaxy S3 phone, which did not work with the touch panel, or rather the lower left corner did not work correctly in some applications.

I go to the menu. everything works fine. I start to write SMS in the standard keyboard. the lower left area with symbols does not work. And then I remembered that Samsung has many service codes on smartphones, including self-testing. Immediately I decided to write a post about the service codes that I often use when diagnosing Samsung phones.

ATTENTION. Before starting software updates, rutting, resetting and other manipulations with your own or, God forbid, someone else’s device, I STRONGLY RECOMMEND to read this post. In short, you were warned and do not say later that you hear this for the first time.

#. Vibration motor test.

on. the device constantly vibrates; off. the device does not vibrate; auto. the device vibrates periodically.

#. Battery data.

Voltage. voltage value on the battery contacts. After setting the device to charge, the Voltage value starts to increase, so this code can be used to check the charging function. Temperature. battery temperature value.

How to open the Service menu?

After such actions, you will see that the same menu will open on your phone, which will help you test many important functions of the phone. It will look like a gray table with cells, each of which offers one of the tests that you can conduct, namely:

  • Color rendering test, or color test;
  • Test of the vibration level of the phone and its reception of waves from other sources;
  • Test the quality of your main camera and the brightness of the smartphone display;
  • Sensor test;
  • Screen sensitivity test;
  • Test of changing modes, correct operation of touch and normal buttons;
  • Front camera, indicator and low frequency screen test.

Test. Galaxy S3 color rendering

It is the three upper touch buttons (cells of the first table-menu) that will help you test your smartphone for satisfactory color reproduction. This test will also identify pixels on the touchscreen that are out of order.

Receiver and vibration test

After choosing a special button in the same menu. “Reciever”, pay attention to the speaker. You should clearly hear a high, slightly nasty beep. If you haven’t heard one. just a test revealed you have a problem with the speaker.

But when you turn to the button responsible for checking the vibration B “VibrationB”, you should feel the vibration motor of your phone working at full power. Again. if it barely works or doesn’t work at all. you have a vibration problem.

All Samsung Galaxy Secret Codes and Hacks, Hidden Menu 2019-20

Test. the quality of your main camera and the brightness of the smartphone display

After you, by pressing the corresponding button B “Dimming”, go to the brightness test, get ready for the fact that you will have to observe the division of the device screen into three parts. After you touch the screen again, the brightness should decrease exactly twice. Of course, if the smartphone is working properly.

But the button B “Mega cam” gives you the opportunity to make sure of the good quality of the main camera.

To begin with, it’s worth making it clear that the Galaxy S3 is equipped with a fairly large number of sensors. All of them will be presented to you to choose from in the subsequent test. Their list will be called by the button B “SensorB”:

  • Proximity sensor;
  • Barometer;
  • Light sensor;
  • Gyroscope;
  • Magnetic sensor.

If you have ever felt that any part of your screen responds worst to touching B “canvas”, then this test will definitely come in handy for you. This test is necessary if you are sure that any part of the screen is less responsive to touch. He will either calm you down and remove all speculation, or he will show you that you are right and clarify the area of ​​the screen that works worse than others.

Test. Sleep Mode, Dynamics and Touch Buttons

Will be able to identify shortcomings in the operation of certain modes and the inconsistency of their nuances with generally accepted.

Test. front camera, indicator and low frequencies of the screen

The last row of buttons in the gray button menu includes a test of your front camera. button B “Front cam”.

Button B “LEDB” is designed to test the indicator.

Table: Combinations for Starting Engineering Mode

Device manufacturer Team
Sony ###
Philips ###
ZTE, Motorola ###
Htc ###
Samsung ###
Prestigio ###
Lg 3845 #
Huawei ###
Alcatel, Fly, Texet ###
Smartphones and tablets with MediaTek processor (most Chinese devices) ###
Acer ###
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If the code does not work, and you cannot start the service menu in the standard way, use third-party applications. you can download them on PlayMarket. Recommended programs. “Launching the engineering menu of MTK”, Mobileuncle Tools, Shortcut Master.

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

Root rights to access the engineering menu

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

  • Install and run the program. Google Play link:
  • If the application supports the installation of 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 start installation.
  • At the end of the procedure, you will see a message about the successful installation of root access.

Instructions for obtaining root access through the Farmaroot application

  • the application closed in the middle of the installation. restart the device and try again;
  • root rights are not installed. try to install using a different method (select a new exploit in the application).

Shortcut Master Utility

Shortcut Master is designed to work with shortcuts and system applications: create, search, delete. There is no direct function of entering the engineering menu in it. But with its help you can view the list of secret commands operating on your device. And by clicking on the name of the command, you will see a drop-down menu in which there will be an item “execute”. Convenient and does not require unnecessary actions.

In the program, open the additional menu and select the Secret code explorer item to see the list of codes

Google Play link:

Why do you need a hidden engineering menu in Android

The Engineering Mode is essentially a hidden application that developers use to test and set the optimal parameters for a mobile phone or tablet. Experts check the operation of the sensors and, if necessary, make adjustments to the functioning of the system components.

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

Audio: increase the volume of a telephone conversation

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

By adjusting the speaker volume, you will hear the interlocutor better during a call

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 if the other person can hear you better.

Increased microphone sensitivity will allow the interlocutor to hear you better

If the settings have not been 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 restarting the device, try to enter the technical menu not through the application, but using the digital command.

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

Main features of the engineering menu on Samsung Galaxy

Having figured out how to enter the engineering menu on Samsung, let’s look at its main features. A complete Engineering Mode for MTK chips is equipped with a large number of tools with which you can make complete diagnostics and fine-tune Samsung in many parameters.

However, many smartphones have a stripped-down version of the technical mode, which slightly reduces its functionality. And in mobile devices based on the Qualcomm processor, through the engineering menu, you can only view information about some modules and perform small tests of the main elements of the phone (display, modem, SIM cards and battery).

In the Telephony tab, the user can:

  • activate / deactivate an answering machine for incoming calls;
  • mark frequencies for GSM telephone communication;
  • choose the communication standards on which the Galaxy A5 will work (2G, 3G, LTE or their combinations);
  • configure access to the Internet, etc.

The Connectivity section is intended for diagnostics and configuration of Wi-Fi, Bluetooth and FM wireless modules. It is not recommended to change anything here, as this can lead to the failure of the smartphone.

The most popular engineering menu tab is Hardware Testing. This is where you can test the performance of the processor, battery, speakers, camera, display and GPS module. This area allows you to make a complete diagnosis of Samsung at the time of purchase and identify possible product malfunctions.

Where to find the engineering menu on Samsung Galaxy

The main purpose of Engineering Mode is to fully test mobile devices at the final stage of their production. This environment was originally developed for debuggers for smartphones and tablets, but today anyone can use it. The main thing is to know how to open technical mode on Galax.

You can enter the engineering menu using a special combination (USSD code), which is registered in the dial pad. At the same time, these commands may differ in different phone models:

  • in Samsung J7 and J1, the actual combination is ##;
  • for Samsung Galaxy A5, Galaxy S5, Galaxy S6 set ### or ### is suitable;
  • Samsung Galaxy A3 uses code ###;
  • for Samsung Galaxy S3. ###;
  • in Samsung Galaxy S7 Edge. ### or ###.

On other devices from the Galaxy line, you can use the service combinations ###, ### or ###.

If you cannot open the engineering menu using the above commands, you can resort to one of the programs developed specifically for this purpose (EngineerMode, Mobileuncle Tools, Shortcut Master, etc.). To start the technical mode, it is enough to install and run one of the utilities. After that, it will automatically enter Engineering Mode.

All applications for opening the engineering menu work only with MTK processors (MT6573, MT6577, MT6589, etc.) and with some Exyon chips. For phones equipped with a Qualcomm CPU (for example, Samsung Galaxy A5), such software will be useless.

How to work with the engineering menu of Samsung Galaxy

Many devices running Android OS are additionally equipped with a special environment. the engineering menu. With its help, the user has the opportunity to test all the sensors and modules of the mobile device, as well as adjust certain parameters of the gadget for himself for more comfortable use. In Samsung phones, Engineering Mode is hidden on the system by default. And in different models, the entrance to it is performed differently. And the functionality of this area may also differ. Let’s take a look at how to enter the engineering menu on Samsung Galaxy A5, Galaxy S6, J3 and other smartphones from the Galaxy line.

An example of using the engineering menu

One of the most powerful tools available in Engineering Mode is BandMode. Here you can turn off unused GSM frequencies, which will reduce the load on the battery and increase its autonomy. On the Galaxy S6, this is done as follows:

  • Enter the engineering menu and open the Telephony section.
  • Select the BandMode tab.
  • Mobile devices supplied to the European market have two pairs of frequencies that they will scan. 900/1800 and 850/1900 MHz. However, only the first pair is used in Russia. Therefore, leave the checkboxes at 900 and 1800 MHz, and uncheck the rest of the values.
  • Confirm the changes made by pressing SET.

All service codes for Samsung Galaxy smartphones and tablets

  • #. will show software version, modem and region
  • #. displays the IMEI number of your phone
  • #. this code will bring up a menu where you can check the functionality of the gadget components, including the LCD panel, infrared port (if any), speaker, cameras and much more
  • #. with the help of this menu you can see the coefficient of absorption of electromagnetic energy by your body
  • #. displays the status of your GSM network, namely, the registration status, which band is in use, and so on
  • #. this menu displays information about the status of the battery. You can also calibrate it by clicking the “Quick Start” button
  • #. you can configure the USB settings. Don’t touch them if you don’t know what they mean.
  • #. system dump mode. You can get dumps of system resources, as well as the logs of their work, by which you can find problems
  • #. it displays information about the touchscreen software. You can also check the Wi-Fi version.
  • #. HSDPA / HSUPA control menu
  • #. over-the-air update options
  • #. wireless engineering menu
  • #. data consumption status
  • #. proximity sensor test mode
  • #. light sensor test mode
  • #. Nand Flash memory serial number
  • #. built-in GPS receiver control menu
  • #. sound test mode
  • #. vibration motor testing
  • #. your MAC address
  • #. Bluetooth test mode
  • ###. more GPS test settings
  • ”your IMEI number” #. show / change region (instead of “your IMEI” enter the IMEI number of the phone).
  • I repeat that you should not touch those parameters, the meaning of which you do not know. You risk losing the functionality of your phone or valuable data.

    How to enter a service tag?

    Everything is very simple. Open the dialer and enter numbers with characters that correspond to the menu that you want to execute. After entering the last character, the menu should automatically start, no additional action is required.

    Denial of responsibility: this information is intended for advanced users. You shouldn’t try to change anything in the settings. if you are not familiar with mobile devices. We are not responsible for any subsequent problems, including data loss or hardware damage.

    Service codes and key combinations for Samsung Galaxy smartphones

    Service tools become useful in cases where the user needs to access some functions that are not available in normal mode. By and large, they were invented to test the operation of the device, but we can also use them to call up various menus.

    Advanced users deal with them all the time. For example, on some Galaxy devices, you can adjust the sound volume, find out hidden information about the phone, and much more. Now we will analyze the most useful service codes that will suit users of Samsung smartphones and tablets.

    Useful keyboard shortcuts for Samsung Galaxy

    • Enter recovery: in the off state of the phone, we press the volume buttons up, Home and power
    • Bootloader / fastboot mode: you also need to turn off the phone, and then hold down the volume down, Home and power buttons
    • Take a screenshot: on the desired screen, hold down the volume up, power and, of course, the Home button.
    • Make the phone go off: simultaneously hold down the volume down and power buttons

    We hope these system codes and key combinations will be useful to you, but, as for the 100th time, we want to warn you that it is worth using them with double caution.