How to go to the engineering menu on android. Engineering menu Android and secret phone codes: how to log in and what can be configured

Some owners of smartphones complain that they are poorly audible interlocutor, music through speaker is played quietly. There are several ways to increase the speaker volume on android. Volume swing is not the only possible method.

Owners of smartphones who hardly distinguish the words of the interlocutor during conversations, will help information how to increase the volume on android through engineering menu. It can adjust the volume of the spoken speaker, headphones.

Initially, the engineering menu is hidden from users. It is explained by the fact that it is only necessary for the experienced owners of smartphones, which are fully imposed responsibility for possible problems with electronic device.

The engineering menu is available only for smartphone owners on the MediaTek processor. To activate it, there are special codes that may differ depending on the brand of the device.

Enter codes required as a regular number or USSD query. There is another way to create an engineering menu - the use of special applications.

Most popular - MTK Engineering Mode.
There is another free application - "Running the MTC Engineering Menu".

The choice of the method is practically nothing to affect the action algorithm how to increase the volume of speakers. After entering the engineering menu, you need to enter the MTK Settings section, then select Hardware Testing Audio. After that, the list consisting of 8 categories will open. Of these, 5 are categories to increase or decrease the volume of sounds.

Normal mode. In it, the phone works constantly when any peripheral devices are connected to it.
Headset mode, its activation occurs when the columns or headphones are connected.
Loud communication mode, android starts to use it when nothing is connected to the smartphone and the user moved to the loudspeaker mode when calling.
Headphone mode with speakerphone. The activation of the mode occurs when a person goes into a loudspeaker mode with headphones connected to the electronic device.
Volume during conversation. Its activation occurs when a person talks with someone in normal mode and additional devices are connected to the phone.

In any of the above categories, several sections will be opened with their choice.

Microphone. (MIC)
The first and, in some smartphones, the second hearing speaker. (SPH, SPH2)
SID - Change the values \u200b\u200bof this parameter is not recommended, otherwise the effect can be achieved when a person will hear himself while talking, and not an interlocutor.
Regulation of multimedia. (Media)
Regulation of the volume of incoming calls. (Ring)
Some smartphones have a radio volume setting. (FMR)

Examples

For example, if the interlocutor practically does not hear you - it is necessary to increase the volume of the microphone.

To do this, select the MIC and the maximum Level, which means the maximum step swing the volume, then change the values \u200b\u200bin the Value section, thereby increment the volume of the microphone. After that, click SET. If the SETTING SUCCESS window appears, the values \u200b\u200bhave been changed and can be tested.

If a person has a smartphone does not have a high volume of incoming calls, you must do the following steps. You will need to go to the engineering menu. electronic device, Go to the Audio section, then go to loudspeaker and select Ring. After that, for each step, the swing swing must be improved. It is not recommended to set the most maximum, for example, at a maximum of 160, it is desirable to install no more than 156. Otherwise, the speaker will be mastered by wheezing and noise.

Finally

After any changes in Value values, do not forget about the SET button, otherwise the action will not be fixed and applied. Also, some smartphones after applying new settings you need to restart and only then test new values.

Before any changes experienced users Smartphones recommend rewriting standard values. This will allow you to return everything into place in case of unsuccessful setting up the volume of the smartphone.

If the article was useful to you, do not forget to add to the bookmarks (CNTR + D) so as not to lose and subscribe to our channel!

Newbie who bought a smartphone or tablet based on operating system Android, after a while it is necessary to reconfigure something in it or more accurately adjust. Go to the engineering menu Android is simple: it is enough to know special teams.

The hidden engineering menu in Android devices allows you to manage the smartphone or tablet system settings that are not available in the regular menu. For example, they allow you to increase the volume of the speaker when calling, forcibly selecting the frequency range of the network used, enable photo format or video that is not in the main settings of the camera, etc.

Options configured in engineering menu

With the help of the engineering menu, you can access such functions as:

volume speaker or sound in headphones;
improved speech recognition;
microphone sensitivity;
quality of voice transmission when making calls;
forced mode of cellular selection mode: "GSM only", "WCDMA only", "LTE only" (in the standard settings of some network modes may not be);
binding to one base station, frequency or channel number;
selection of technology and cell data rate;
testing and "acceleration" of the processor;
enabling / disable "Sleeping" mode;
radio testing wi-Fi modules, Bluetooth;
2G / 3G / 4G autoturn in "Sleeping" mode;
camera test drive;
changing the format of photographs (default is JPEG or PNG);
thin adjustment of the brightness of the display and its reaction to illumination;
locking / unlocking auto auto settings with an incoming call;
improving GPS;
full "reset", including factory formatting of a smartphone;
testing and setting motion sensors;
testing color reproduction on the display;
testing and configuring the vibrating alert;
backup multimedia files;
determining the level of harmful radiation (SAR) on a separate device;
settings and behavior FM radio.

Video: Smartphone setup capabilities through engineering menu

Commands to access the menu

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

Main codes for entering the engineering menu

Entered commands differ for different brands of devices - select those that are suitable. It is not forbidden to check all - not the corresponding to the specific manufacturer of the team simply will not work.

Table: Commands for access to the engineering menu of various manufacturers

Commands provided by Google for Android OS

Android factory service codes showing technical information About the device, often do not have bindings to the manufacturer. Basically, they are all "sews" in the default Android. The "Numbering" range of the teams is agreed by Google - on the Rights of the Creator of the Operational android systems - with manufacturers of tablets and smartphones.

Table: Android factory service codes

Parameter opened by a set of code	Code
MAC address Wi-Fi	##232338##
Information about the active WLAN wireless network	##232339##
GPS check	##1472365##, ##1575##
Bluetooth version	##232331##
Bluetooth MAC Address	##232337#*#
Loopback batch tests	##0283##
Touchscreen version	* # * # 2663 # * # 2664 # * # *)
Checking the motion sensor	##0588##
Screen check	##0##*
Vibrating and illumination check	##0842##
Melody test	##0673##
Version of the RAM	##3264##

The most demanded service codes of the engineering menu

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

Table: Service codes for changing phone settings

Called parameter or setting	Service code
Discover serial number IMEI.	*#06#
Settings and information	##4636##
Version of Android OS.	*#2222#
Erasing all SMS messages	#*5376#
Statistics using smartphone and battery	##4636##
Reset google account and other system utilities without deleting pre-installed software. At the same time, applications stored on a memory card (SD) will remain unchanged.	##7780##
Resetting the settings and clean the user files from internal memory, Reinstall the firmware of the smartphone. A confirmation request is not issued, but you may have time to pull out the battery - and then restore files and settings from the backup using the application on the computer.	27673855#
Information about the built-in camera and its settings. Update firmware.	##34971539##
Changing the OPP button change ("On / Off").	*##7594##
Showing the file copy screen. Can be done backup All of their data.	##273283255663282##*
Service Mode - Starting all sorts of checks (click on MENU), Remunifying the smartphone in service mode.	##197328640##

When using commands, you must consider the following:

updating the camera firmware through the engineering menu, you can learn about the version of this firmware and the number of its updates - as well as save this update to the image in the internal memory and on the SD card. Remove the camera is not recommended once again - in case of failure, you just turn it out;
when resetting the Android system with deleting all user google data A message-request message will appear on the screen to confirm the reset.

How to enter the engineering menu

To get to the engineering menu, follow these steps.

Video: How to open an engineering menu on Android

What to do if it did not work in the menu

It happens that none of the teams intended for a particular brand of devices do not fit - this manufacturer protects inexperienced users from not to the end of thoughtful actions. Some manufacturers after the smartphone program debugging completely remove the engineering menu, and all the above commands simply do not work. For example, this makes Samsung. Part of the commands input can harm how software Android and the device itself.

Often, instead of common service teams, more specific are triggered. If, despite all your attempts to "reach" to the engineering menu, none of the service codes is triggered - special applications are needed.

Install the free MobileUncle Tools app - it will distinguish the hardware and system settings. It may be necessary to get root-access on Android. There are other applications: ENGMODEMTKSHORTICUT, BETTERCUT, etc.

How to Save Settings

So that the settings made using the Android engineering menu are preserved, you need to go out correctly. Being in any of the sections of the engineering menu, use the "Back" screen or in the menu itself, or press the Call Cancel button or the Back "below the display - it is indicated as an arrow with a reversal - to exit the level of the engineering menu.

It is not recommended by setting the value of any setting and confirming it with the SET key ("Set"), turn off or restart the smartphone by pressing the power button, pull out the battery from the device, etc. The output from the engineering menu can be pressed in the press - sometimes with hold For a few seconds - the same "Back" key, which is under the display. When you exit the engineering menu on the smartphone screen, a request message will appear about the need to save the generated settings - 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 versions and android assembly Suitable for your device. If you have a branded smartphone with the version of Android, which has pre-installed programs and components from Beeline, MTS, MegaFon or Tele2 - boldly establish a "custom" version, for example, a well-known CyanogenMod assembly. There may be any earlier - or, on the contrary, the most "fresh" version of Android.

In some cases, enter the engineering menu is impossible without getting root rights. The task is to make a smartphone with Android "rutted". In other words, get the "superuser" capabilities on the smartphone, allowing you to take a smartphone for the most clear and complete control. This is achieved in the following ways, use any of them.

Install on your smartphone custom (modified) version of Android. Its composition already includes the SuperUser software component ("Super User"), which opens access not only to the engineering menu, but also to the System system folder.
Load from Android Market any of the Android hacking applications without the help of a computer. Different programs are suitable here: Universal Androot, Unlock Root, Z4ROot, Revolutionary, etc., not all of them can help - have to test everything until it turns out.
You can also try Windows applications that do directly with PC all manipulations with root-access on your smartphone - for example, VROOT program. You also need a USB-MicroUSB cable - Wi-Fi hack Android on the smartphone is impossible.

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

The "Fresh" version - the more settings in the engineering menu will be in Russian. In the most early android versions (1.x, 2.x) All service settings were on english language. A little learn 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 is in whole or in part, it decides not the Android version, but the brand and model of the smartphone. Try different combinations and programs, but not too fond.

With ineptive actions or for the forgetfulness of the input codes, there is a risk of turning the smartphone into a lifeless machine, and only in the service center you can restore it. And since in the case of "rutting" of the device you automatically deprive the warranty.

Android engineering menu is one of the most useful tools "advanced" user who does not give it to embracing the hardware resource of its device and the cellular resource and wireless networks Wasted. And no matter what your version of Android is 2.2, 4.2.2, 4.4.2 Kitkat, 5.1, 6.0 or other, the engineering menu codes are determined only by the manufacturer. Fully subdued to yourself your smartphone or tablet, you will deprive it with the ability to "live your own life" not according to your schedule, but according to the script of the manufacturer, cellular operators and other intermediary companies, one way or another involved in work mobile technology In cellular networks. This is the soastful way to professionalism.

Alexander Grishin

MEIZU M3 engineering menu is used to eliminate software failures, as well as to configure the smartphone after repair. Most of the opportunities offered in this menu in practice will not be in demand even the most advanced users. In this instruction, we will tell you how to open the Meizu engineering menu and about its basic functions.

How to open

To get to the engineering menu (engeneermode), you should dial a combination on the keyboard

*#*#3646633#*#*

It is done under Android 4.0, so it looks quite outdated. But, with no difficulties in understanding the interface should not occur.

Total Meizu M3 and M3 Note have several additional tabs to configure:

Telephony;
Connectivity;
Hardware Testing;
Location;
Log and Debugging;
Others.

Let's look at them in more detail.

Telephony (Telephony)

Here you can spend tests of the smartphone modem. There are also several positions to configure calls. You can see the compatibility of the device with operators. Without knowledge, it's better not to climb here, but in the extreme case there is a reset button made changes.

Connectivity

Here produced wi-Fi Setup. You can also see how the Bluetooth is configured, and if necessary to fix it.

Hardware Testing (Iron Testing)

Here you can find a large number of Opportunities for setting up iron, you can adjust the display, test modules. But, the most popular opportunity is to adjust the volume of sound in headphones.

Location

It is possible to disable the location function.

LOG AND DEBUGGING (debugging)

Others (Other)

There is a large number of items that did not fall into the main menu, but may also require settings. You can change the fonts, the speed of the sensor reaction, languages \u200b\u200band much more.

At the end, we note that without special knowledge in the engineering menu it is better not to change anything, otherwise you can spoil the normal operation of the MEIZU smartphone.

Engineering menu Android and secret codes. What allows Android OS through the engineering menu to configure? Sound volume, sensors and more, read all this in our article.

Our smartphones carry a lot of secrets that are hidden by manufacturers. What do you know anything about the engineering menu on Android? And about secret codes heard? Once discovered our article, it means that something remotely, but heard. All of these tools appeared even at the birth of the first mobile phones, but that and naturally, over the years they became more functional and understandable.

However, it is worth noting immediately, the manufacturer's plans are not included in the engineering menu or secret codes on (which is understandable from the title) available to each wishes. And this makes sense. Let's go in order.

What is the engineering menu android, secret codes?

So, Engineering Mode (Engineering Menu) - special applicationwhich is installed almost on any smartphone. Used by a manufacturer for various tests and optimizing functions, sensors and other parameters of the phone or tablet.

By default, hidden in the system so that each user cannot access it. Called, as a rule, by means of a small code entered using a standard dialer. Thanks to wide opportunities, access to the engineering menu, and its control can be made using third-party applications.

Why is the engineering menu hidden? With careless use of the application features, you can harm your smartphone or another device. As noted above, an engineering menu is intended for manufacturers (developers, for tests). Therefore, it should be attentive, making any changes here.

Secret codes for Android (service, engineering) are somewhat different from the considered menu. If the engineering menu opens access to many parameters to many parameters, then one entered service code leads only to one, as a rule, functions. Codes are a lot.

And there is both universal (work on most Android smartphones, even mobile phone) and codes for specific models devices. A little later we will analyze the most popular.

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

Android engineering menu - the most popular code

There are two popular methods: through a secret code or with a special software. Naturally, the first way is easier and more reliable, but not without nuances. Universal code, which will definitely transfer you to the engineering menu, not to find.

On one smartphone, one works on the other - the other, on the third - the third one. However, Android is not the first year, because the users of the most popular codes that are triggered on most devices are derived. So:

# * # 3646633 # * # * - The most common login code into the engineering menu android menu;
# 15963 # * # * - If the previous one did not work, try these;
* # * # * # * # * # * # * # * - Used on smartphones from Sony's company; # 364647 # * # * - Used on smartphones from Sony;
# * # * # * # 8255 # * # * - pay attention to the owners of HTC devices;
* # * # * - In some cases, it works on samsung;
3845 # * 855 # - often used to access the engineering menu on Android smartphones LG;
# * # 54298 # * # * - Works on many devices with MediaTek processor;
* # * # * Or * # * # * # * - Huawei has its own set of codes. # 2846579

At least at least one, but should work on your device. The code is simply inserted by means of a dialer (phone application "on the desktop). As a rule, even the call button should not be pressed (not always) - at the end of the set will happen automatic start Services. But not everything is so simple, there are certain difficulties of launching the engineering menu on some android phones.

It is impossible to enter the engineering menu Android: Causes

first, on many smartphones or tablets with processors Qualcomm Snapdragon., Intel or Tegra or not provided for menu, or access to it is very difficult. In some cases, you can not even try.
secondly, custom firmware may cause problems. In a number of them, there is simply no or blocked access to configuration tools. For example, the engineering menu you will not find in cyanogenmod firmwarewhich is very popular among users. The reason is simple - initially the firmware was developed for Snapdragon database.
thirdly, the source of problems can be the manufacturer itself who hid the engineering menu is more reliable or decided to remove it at all. Here we will take a different kind of mistakes, from which none of the devices are insured.

Actually, solutions to problems lie on the surface. If the smartphone is on Snapdragon, Intel or Tegra, then in most cases anything will not succeed. However, on these devices you can access a row hidden settingswhich we will tell you just below.

By the way, on smartphones Xiaomi.which most of them are presented on the basis of Qualcomm chips, you can get access to the engineering by clicking several times on the "kernel version" in the smartphone settings (section "on the phone"). Finally, in some cases, refractming android devices on the stock (official) firmware will help.

In the second way to open access to the engineering menu can be applications. They are quite a lot, you can download free from, but almost everything is designed for smartphones based on MediaTek processor.

Again, it is not a fact that each of the programs will smoothly work on your device - there is a hundred reasons for which they will refuse to function. Small companies are engaged in the development of such funds, because you probably have to try out several.

What can be configured in the engineering menu?

how appearance interface and set of parameters for configuration may differ for different smartphones. If you take the device on Qualcomm Snapdragon, then you often have everything you can do - look for information about various modules and make any tests.

Make any changes to the parameters will not work. But Smartphones on MediaTek offer much more features: sound configuration, network setting, various modules, and so on.

So, no matter what an externally engineering interface may differ on different devices, deal with items will not be. Let's go through the main possibilities.

Once again: Changes you put on your own fear and risk. Do not change the parameter values \u200b\u200bthat do not know anything.

Informative Opportunities for Android Engineering Menu

The first thing that the Android engineering menu offers is to explore various information about the device. It mainly concerns the network, wireless interfaces and batteries (on smartphones with Snapdragon processors using the * # 4 4636 # * # * command. What can be viewed in these sections:

IMEI phone - a special (unique) room, which is assigned to each smartphone;
Phone number - not always indicated;
Network - denotes the current operator;
Roaming - are or not;
Network information - Consider or not, is enabled or disabled;
Call redirection - is used or not;
Network type, network index;
Signal volume and your location in the form of coordinates.

In the "On Battery" section:

Condition: Charged or not;
Charge level (in percent);
Tension and temperature;
The technology on which the element is produced;
Time with the last reboot.

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

Testing the parameters of the smartphone in the engineering menu

Quite interesting engineering menu, allowing the tests of various smartphone parameters. Often helps to find the source of the problem, because of which the system functions incorrectly. What specific tests can be made:

Complex (Automatic Test) - each parameter of the smartphone is tested;
REPORT (report) - A test report is provided;
Testing buttons, memory cards and SIM cards, vibrations, speakers, connectors - All this can be checked for performance;
Screen tests - on brightness, sensitivity, and so on;
Testing cameras and flash, flashlight, wireless interfaces and sensors (gyroscope, accelerometer and other).

Again, the set of testing options may differ. It all depends on the engineering menu of a specific android device. Undoubtedly useful functionswhich will be useful to many users. For example, when buying a used smartphone, you can test the screen for performance.

Changing the parameters in the hidden menu Android

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

It is better not to touch the parameters at all, the appointments of which we do not know, and also to make screenshots or marry everything that change. If you have any problems, you can return the options to the default values. Consider here the most interesting sections.

Cellular Configuration (Telephony) and IMEI Change

Engineering menu Android - frequency

There are focused installations to change network parameters. You can hardly remove the smartphone in order by changing these parameters, but you can break the network to break away, so you remember where you shoot and where to put ticks to in the future, if anything, return everything into place.

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

First, you can remove the selection from the frequency (subsection Band Mode.) on which your operator does not work. Find out what bands your mobile operator, Remove the checkboxes from all the others. This will help slightly reduce energy consumption, as it will know for exactly what frequencies to connect it.

In the same subsection, on the contrary, you can include the desired frequencies. It is necessary when the manufacturer from the factory does not activate the necessary for your region. For example, often "out of the box" chinese smartphones Can not work in Russia with LTE. This problem will help solve the service menu on Android.

Secondly, in the subsection Network SELECTINGwe can set the priority of networks that are used for access (2G, 3G, 4G). Everything is done for the same purpose: an increase in time autonomous work From battery. Typically, 3G and / or 4G networks are turned off. Not in each region there is support for these networks, and the communication module, as it may, continues to look for them, spending energy. Disconnected - and no problems. In addition, the device will not switch to 3G or 4G, spending traffic.

In subsection GPRS., we, simple users It is better not to climb if there is no reason for the reason. Here are indicated various settings For the work of a smartphone with a network, as well as an item for changing IMEI.

Attention! There were precedents of criminal prosecution for illegally shift IMEI numbers. More often, the punishment is a cash fine, a suspended period. However, there were cases of real imprisonment.

The IMEI change function can be useful after an unsuccessful firmware attempt when the identification number "flies". Then you can simply rewrite it from the box in which the device is supplied.

Connectivity

Here, as in the case of GPRS, you have nothing to do. The section itself is designed to make changes to the settings of Wi-Fi and Bluetooth modules. The section will not be able to configure something that the smartphone works is better, but you can easily harm the electronic comrades.

Therefore, here we use only testing functions, and if you need to make any fixes to return the device to the working state, carefully study the purpose of each parameter on the network.

Sound volume setting in Android engineering menu (AUDIO)

Engineering menu Android - volume setting

Judging by the number of queries in the search, it is to increase the volume of the Android users resort to the engineering menu. Everything is simple enough:

Select the Hardware Testing tab -\u003e Audio. Select the right mode;

Normal Mode - is responsible for the output of sound on the main speaker.
HEADSET MODE - With it, the sound volume is adjusted in headphones.
Loudspeaker - enter the settings for adjusting the sound parameters during speakerphone.
Headset_loudspeaker Mode - allows you to increase or decrease the sound volume for speakerphone mode with connected headphones.

Now you choose from the drop-down list, for which device will configure the volume in the Android engineering menu;

SIP - options for Internet telephony. MIC - the sensitivity of the microphone is set. SPH (maybe two) - setting the speaking speaker. Media - multimedia speaker (main). Finally, an item that is better not to touch - SID. After the changes may appear echo.

In the LEVEL string, the volume level is set to each step (pressing) the volume of the volume. By default - 0. You can not touch if, of course, the sound on your device does not jump sharply when the button is pressed.
In the Value IS string, the value of each step (volume level) is set;
The most interesting line "MAX VOL", with which the maximum volume on Android increases through the engineering menu.

As a rule, the manufacturer of the smartphone is set not maximum value, so we can fix it yourself. Please note that at the maximum level there are raws of dynamics. To find the most comfortable value, go through options.

Secret codes for android

In addition to the engineering menu, you can use secret codes to access different functions. It is as difficult here to predict which of the commands will work on your device. Consider the most popular and useful:

*#06#	We get IMEI smartphone
##232338##	Learning Mac address and Wi-Fi data
##232337##	Shows Bluetooth address
##3264##	Displays information about RAM
##1234## ,	Learning all about the program part
##2663##	View Data on Screen Sensor
*#34971539#	Displays information about the installed camera sensors
#0#	Used for integrated smartphone test
##0##*	Useful for the test screen
##2664##	Runs the display sensor test
##0842##	Produces vibration test
##0289##	Come in handy for sound testing
##1575##	Runs Testing the GPS Module
##7262626##	Used to check mobile communication
##7780##	Reset smartphone settings - in whole or in part
#*5376#	Erases all SMS with smartphone
#*3851#	Will be suitable for rebooting the device
*#2263#	Setting network ranges
##273283255663282##*	Calling backup files

Often in chinese (yes for sure and not only chinese) phones on android database In the engineering menu there are far from being exhibited optimal settings Volume speakers, headsets (headphones) and microphone, fix them and consider in this article.

How to get to the engineering menu of the phone based on android

To get to the engineering menu, open the number of numbers and enter special code: *#*#3646633#*#*

Also on some versions of Android can work as a team # 15963 # * and * # * # 4636 # * # *

If your phone's processor is not MTK, then different options are possible.

I will give me codes known to me to open the engineering menu on different phones and tablets:

*#*#54298#*#* or *#*#3646633#*#* - Smartphones based on the MTK processor

*#*#8255#*#* or *#*#4636#*#* -Smartphones Samsung

*#*#3424#*#* or *#*#4636#*#* or *#*#8255#*#* - Smartphones HTC.

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

*#*#3646633#*#* – smartphones texet., Fly, Alcatel,

*#*#3338613#*#* or *#*#13411#*#* — smartphones Fly., Alcatel, Philips

*#*#2846579#*#* or *#*#2846579159#*#* - Huawei smartphones

*#*#2237332846633#*#* - devices from Acer

Immediately after entering, the command should disappear and open the engineering menu. But on some devices it will still be necessary to press the "Call" key.

A list of sections of the engineering menu of the phone will appear.

Just in case, take a notebook and handle and set the settings that were set on your phone to your intervention. Little, anything happens.

On my phone (based on MTK processor) to get to the engineering menu I had to install a free utility (program) from Google Play. « Mobileuncle MTK Tools."That opens access to the engineering menu (that is, it works similarly to the magic combination set * # 3646633 # * # *).

I am sure that you will find free Apps And for other phones.

Speaker Settings, Headset (Headphones) and Phone Microphone through Engineering Menu

For clarity, we will briefly analyze the adjustment of the volume of the machine:

We go into the program or recruit a magic combination to enter the engineering menu. Next, in the menu that opens, choose the section " Engineer Mode.»

A section will open in which you can select the engineering menu of the Android system (skip it), and the engineering menu of the phone itself.

We need an engineering menu of the phone, so select the "Engineer Mode (MTK) section". This item is encountered in the drawing with a red marker.

A very long menu will open through which you can access almost any phone settings. But not enough to get to them, you need to know how to manage them.

Therefore, do not change what you have no idea.

At the worst, write down the parameters that were before your intervention to return it back. We continue!

Since it is interesting for us to configure the sound level, select the "Audio" item, I covered it with a red marker.

And ... Magic! The settings of the speaker and microphone parameters settings are open.

And actually why we climbed into this menu? Something does not work so from curiosity? Okay, continue to understand!

It is worth lingering and figure out what all these menu items mean.

Normal Mode. (Settings section in normal or normal mode) - such an active mode when nothing is connected to the smartphone;

Headset Mode. (headset mode) - this mode is activated after connecting headphones or external columns;

Loudspeaker Mode. (speaker mode) - It is activated when nothing is connected to the phone or tablet, and you turn on a loud connection during a call on the phone;

Headset_loudspeaker Mode. (the loudspeaker mode when the headset is connected) - this mode is activated if you connect headphones or external speakers to the phone or tablet, and you turn on a loud connection while talking on the phone;

Speech Enhancement (Talk mode by phone) - this mode is activated in normal mode of talking by phone, and it is not connected to it (headset, external speakers) and the speakerphone is not enabled.

Debug info - It is not clear for what - information on the backup of information or its debugging;

Speech Logger. - I did not fully understand, most likely, logging during negotiations or recording a conversation. If you check the box next to "Enable Speech Log", then after completion phone call In the root directory of the memory card, appropriate files are created. Their name and structure gets the following form: the day of the week_mets_nity__nd_mintes_sekunds (for example, Friday_yul_2016__Trem17_12_53.pcm).

Why serve these files and how they can come in handy - incomprehensible. The / sdcard / voip_debuginfo directory (which is the storage location with information on the backup) - it is not automatically created if you create it manually, then after the conversation it will remain empty.

Audio Logger. - Used to record sound that supports quick search, playback and saving it.

When entering any of the modes, you will be available to various volume settings (TYPE). Here is a list of basic settings you need to know:

SIP - settings for Internet calls;
MIC - microphone sensitivity settings;
SPH - Configure speaker settings (that we apply in the ears);
SPH2 - settings of the second conversational speaker (I do not have it in the phone);
SID - we skip, when changing these parameters, during the negotiations on your smartphone or tablet, you can hear yourself instead of the interlocutor;
Media - setting the volume of the multimedia;
Ring - setting the volume of the incoming call;
FMR - FM Radio Volume Settings.

Under the settings item, a list of volume levels (LEVEL) is available (see Figure).

Such levels are usually 7, from Level 0 to Level 6. Each such level corresponds to one click on the volume of the volume of the volume of your smartphone or tablet.

Thus, Level 0 is the most quiet level, and LEVEL 6 is the most loud level of the signal. Please note each level you can assign your values \u200b\u200bthat are in the Value IS 0 ~ 255 cell. They should not go beyond the range from 0 to 255 (the lower the value, the quiet volume).

To change this parameter, you need to erase the old value in the cell and write a new one, and after pressing the "SET" button (that next to the cell) for assignment.

At the end, the MAX VOL section is seen below. 0 ~ 255 (on my smartphone, such as Max Vol. 0 ~ 255, it all depends on the manufacturer). This item sets the maximum volume of the volume level, it is one to all LEVEL.

Dear friends. The name of the items may differ on different models. This is the MTK platform, so be prepared that you have to strain the brain and search for compliance in your menu. I have a jiayu g3 phone.

I had changed immediately, but perhaps someone will need to restart the phone so that they come into force.

Although, it seems, you should not break anything and if the changes do not like to always enter the old value ..
But still..
All changes you make at your own risk !!! Do not forget to turn on the thinking!

P.S.:This on the phone discovered the font size setting. It turns out you can still increase!
P.P.S.: If something is still not clear, then here is the video to set the sound in the engineering menu: