Fly engineering menu codes. Android engineering menu: settings, tests and functions. Photo gallery: wireless data transmission

Often in Chinese (and certainly not only Chinese) Android-based phones in the engineering menu, far from optimal volume settings for the speaker, headset (headphones) and microphone are set, and we will consider their correction in this article.

How to get into the engineering menu of an Android phone

To get into the engineering menu, open the dialer and enter a special code: *#*#3646633#*#*

Also, on some versions of Android, the command may work *#15963#* and *#*#4636#*#*

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

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

*#*#54298#*#* or *#*#3646633#*#* – smartphones based on the MTK processor

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

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

*#*#7378423#*#* – Sony smartphones

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

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

*#*#2846579#*#* or *#*#2846579159#*#* – Huawei smartphones

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

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

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

Just in case, take a notebook and a pen and take notes on the settings that were set on your phone before your intervention. You never know, anything can happen.

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

I am sure that you will also find free applications for other phones there.

Volume settings for the speaker, headset (headphones) and microphone of the phone through the engineering menu

For clarity, let's briefly analyze the volume setting of the device:

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

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

We need the engineering menu of the phone, so we select the "Engineer Mode (MTK)" section. This point is circled in the figure with a red marker.

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

So don't change what you have no idea about.

At worst, write down the parameters that were before your intervention, in order to return them later. We continue!

Since we are interested in setting the sound level, select the “Audio” item, I circled it with a red marker.

And… magic! The speaker and microphone settings menu that interests us opens.

And actually why did we climb into this menu? Is something not working out of curiosity? Okay, let's keep looking!

Here it is worth lingering and understanding what all these menu items mean.

normal mode(settings section in normal or normal mode) – this mode is active when nothing is connected to the smartphone;

Headset mode(headset mode) - this mode is activated after connecting headphones or external speakers;

Loud Speaker Mode(loudspeaker mode) - it is activated when nothing is connected to the phone or tablet, and you turn on the speakerphone while talking on the phone;

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

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

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

Speech logger- I didn’t fully figure it out, most likely, keeping a log during negotiations or recording a conversation. If you check the box next to "Enable speech log", then after the end of the phone call, the corresponding files are created in the root directory of the memory card. Their name and structure takes the following form: Day of week_month_year__hour_minutes_seconds (for example, Friday_July_2016__time17_12_53.pcm).

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

audio logger– Used to record sound that supports quick search, playback and save it.

When you enter any of the modes, you will have access to various volume settings (Type). Here is a list of the main settings you need to know:

Sip - settings for Internet calls;
Mic - microphone sensitivity settings;
Sph - settings for the conversational speaker (the one that is applied to the ears);
Sph2 - settings for the second conversational speaker (I don't have it on my phone);
Sid - skip, when you change these parameters during negotiations on your smartphone or tablet, you can hear yourself instead of the interlocutor;
Media – setting the multimedia volume level;
Ring - setting the volume level of the incoming call;
FMR - FM radio volume settings.

Under the item for selecting settings, a list of volume levels (Level) is available (see figure).

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

So level 0 is the quietest level and level 6 is the loudest signal level. Please note that each level can be assigned its own values, which are in the Value is 0~255 cell. They should not go beyond the range from 0 to 255 (the lower the value, the quieter the volume).

To change this parameter, you need to erase the old value in the cell and write a new one, and then press the “Set” button (the one next to the cell) to assign it.

Finally, at the bottom you can see the Max Vol. 0~255 (on my smartphone, for example Max Vol. 0~255, it all depends on the manufacturer). This item sets the maximum value of the volume level, it is one for all levels.

Dear friends. Item names may vary depending on the model. This is the MTK platform, so be prepared to use your brain and search for a match in your menu. My phone is Jiayu G3.

My changes were applied immediately, but someone may need to restart the phone for them to take effect.

Although, it seems, you shouldn’t break anything, and if you don’t like the changes, you can always enter the old value ..
But still..
ALL CHANGES YOU MAKE AT YOUR OWN RISK!!! Don't forget to turn on the thinker!

P.S.: I found the font size setting on my phone. It turns out you can still increase!
P.P.S.: if something is still not clear, then here is a video on setting up sound in the engineering menu:

Android smartphone manufacturers implement and use the engineering menu to test devices. It contains all kinds of tests and device settings that are not available to ordinary users. However, today, knowing the USSD command or downloading the application from PlayMarket, anyone can enter the engineering menu.

Why do you need a hidden engineering menu in Android

Engineering Menu (Engineering Mode) is an inherently hidden application that developers use to test and set the optimal parameters for a mobile phone or tablet. Specialists check the operation of sensors and, if necessary, make adjustments to the functioning of system components.

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

How to enter the menu

To open the menu set by the manufacturer, activate the dial pad on your smartphone and enter one of the USSD commands presented in the table. After entering the command, the numbers will disappear from the screen, and a menu will open instead.

Table: combinations to start Engineering Mode

Device manufacturer	Team
Sony	##7378423##
	##3646633##
	##3649547##
Philips	##3338613##
Philips	##13411##
ZTE, Motorola	##4636##
HTC	##3424##
	##4636##
	##8255##
Samsung	##197328640##
	##4636##
	##8255##
Prestigio	##3646633##
LG	3845#*855#
Huawei	##2846579##
Huawei	##14789632##
Alcatel, Fly, Texet	##3646633##
Smartphones and tablets with a MediaTek processor (most Chinese devices)	##54298##
	##3646633##
Acer	##2237332846633##

Video: how to work in Engineer Mode

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 - "Start the MTK engineering menu", Mobileuncle Tools, Shortcut Master.

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

"Launching the MTK engineering menu"

The application allows you to open and configure the engineering menu without a set of digital commands. Works correctly on MediaTek processors (MT6577, MT6589, etc.) and Android 2.x, 3.x, 4.x, 5.x systems. According to user reviews, the program successfully performs its functions, but after rebooting the smartphone, the settings made using the application are reset.

Mobileuncle Tools

The functionality of the application is similar to the previous one, but, in addition to accessing the engineering menu, the user gets the opportunity to view information about the screen, sensor and memory of the device, as well as update the firmware, restore the IMEI number and improve GPS. Root rights are required for stable operation.

Shortcut Master Utility

The Shortcut Master program is designed to work with shortcuts and system applications: creating, searching, deleting. There is no direct function to enter the engineering menu. But with its help, you can view a list of secret commands that are active 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 doesn't require any extra work.

Root rights to access the engineering menu

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

Install and run the program. Link in Google Play: //play.google.com/store/apps/details?id=com.farmaapps.filemanager&hl=en.
If the application supports installing root rights on your device, then you will see a list of possible actions on the screen, among them - “Get root”. Select this item.
Choose one of the preset root methods.
The program will start installing.
At the end of the procedure, you will see a message about the successful installation of root access.

Possible problems and solutions:

the application closed in the middle of the installation - restart the device and try again;
Root rights were not installed - try installing using a different method (choose a new exploit in the application).

What can be configured in the menu

The appearance of the engineering mode and the options for adjusting the parameters may vary depending on the model of the tablet or smartphone. In the menu, users most often adjust the sound, change the camera settings and use the recovery mode. The adjustment parameters and procedure are shown below. Be careful - the names of menu items may vary in different device models! You act at your own risk.

Audio: increase volume level

If your phone is not loud enough, find the Audio section in the engineering menu and go to LoudSpeaker Mode. Select Ring. For each signal level (level 1–6), change the values - set the numbers in ascending order, from 120 to 200. Increase the value in the Max. Vol - maximum 200. Press the SET button to save the settings.

Audio: increase the volume of a telephone conversation

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

To increase the sensitivity of the microphone, go to the menu Audio - Normal mode - Mic. For each level, assign the same microphone sensitivity values, for example, 200. Press the SET button, reboot and see if the other person hears you better.

Video: adjusting sound settings in the engineering menu

Battery: disable unused frequencies

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

Modern devices scan several GSM frequencies - 900/1800 MHz and 850/1900 MHz. In Russia, a pair of 900/1800 MHz operates, which means that there is no need to scan the network at other frequencies. The radio signal for the second pair can be turned off, which will significantly save the charge level.

In Engineer Mode, open the Band Mode item. Disable unused frequencies by unchecking the corresponding items - PCS1900 and GSM850. If the device supports two SIM cards, open SIM1 and SIM2 in turn and follow the steps in each. Press the SET button to save the settings.

If your smartphone and SIM card work in 3G networks, disable networks that are not used in Russia: WCDMA-PCS 1900, WCDMA-800, WCDMA-CLR-850. Press the SET button again.

You can enable scanning of disabled networks by returning to the same menu and checking the boxes.

Camera: photo and video settings

By default, Android devices save pictures in JPEG format. Meanwhile, photographers tend to shoot and process their footage in RAW for more editing options. The technical menu allows you to select the desired image format.

Find Camera in the menu and select Capture Type. Set the photo format to RAW and press SET. Also in the Camera menu, you can increase the size of pictures, set the ISO value, enable shooting in HDR for higher photo detail, and set the frame rate for video. After changing each parameter, remember to press SET to save the settings.

recovery mode

Recovery Mode (Recovery Mode) - an analogue of Bios on a computer, allows you to manage the device without logging into the Android system. Recovery Mode Features:

resetting the settings to standard;
firmware update;
access to root rights;
creating a backup copy of the OS;
removal of personal data from the system.

In Recovery Mode, do not perform an action if you are not sure what it will lead to. Some commands can harm the device and the system.

If the settings are not saved

Users who have access to the technical menu complain that the parameters changed in it are not activated or are reset when the device is restarted.

To activate the settings after changing the parameters, tap on the SET button at the bottom of the screen. If the parameters are reset after the device is rebooted, try entering the technical menu not through the application, but using a digital command.

Service codes for Android devices

In addition to the technical menu, secret USSD codes allow you to control the functionality of Android smartphones - combinations of numbers and symbols, by typing which the user performs an action. Secret codes for different devices are shown in the table.

Table: list of secret commands for Android

Manufacturer	Digital team	Meaning
Codes for most manufacturers	##7780##	Rollback settings and uninstall user applications
	27673855#	Firmware change, total rollback of settings.
	##232339## ##526##	Checking Wireless Connections
	##34971539##	Detailed information about the camera
	##232338##	View Wi-Fi address
	##273283255663282##*	Activate media backup on your phone
	##1472365##	Express GPS test
	##0##*	Screen check
	##2663##	Viewing touchscreen information
	##2664##	Touchscreen testing
	##4636##	General device and battery data
	##0673## ##0289##	Audiotests
	##7262626##	GSM reception test
	##0842##	Vibration and display brightness test
	##3264##	Information about RAM memory
	##232331##	Bluetooth communication test
	##8255##	Checking Google Talk
	##232337##	Bluetooth address information
	##1234##	Firmware data of the device
	##44336##	Device build date
	*#06#	Information about the IMEI number
	##197328640##	Service activity test
	##1111##	Version of free-to-air programs
	##2222##	Iron number for free-to-air
	##0588##	Proximity sensor test
Sony (unified commands operate on devices)	05*#	Unblocking a PUK code
Motorola	*#06#	IMEI
	##786##	Roll back settings to original
	##1234## ##7873778##	Opening apps as root
	##2432546##	Check for updates
	##2486##	Entering the service menu
HTC	##4636##	Service menu
	##3282#	EPST System Application
	##8255##	G-talk monitor
	##33284#	Network status
	##3424##	Functional test
	##3424#	Device Diagnostics
	##7738#	Protocol Diagnostics
	##8626337#	Voice Coder
Samsung (general codes effective)	##778 (+call)	EPST menu activation
LG (work with codes replaces the technical menu)	3845#*855#	International Devices
	3845#*400#	Chinese devices
	5689#*990#	Sprint
	##228378 (+ challenge)	Verizon Wireless
	3845#*851#	T Mobile
	3845#*850#	AT&T

If for some reason the service code did not work, do not worry - install and run the Secret Codes application (Google Play link: //play.google.com/store/apps/details?id=fr.simon.marquis.secretcodes&hl= ru). The program will analyze the combinations valid in the device and offer you a list. You can activate the combination directly in the application with one click on the name.

The engineering menu provides access to manual configuration of the "iron" part of the smartphone. To enter, you need to enter a special code or install an application, but there are a number of features that you should pay close attention to. If you could not enter the engineering menu the first time, then you did not take into account the features of the device. It should immediately be clarified that any intervention in the operation of the device can lead to its inoperability and loss of warranty.

Hidden system features

At the last stages of smartphone setup, developers test the system for errors and check the operation of all device sensors. Especially for this, a special subroutine is sewn into Android - the engineering menu, which provides access to the 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 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.

We enter a special code to enter the engineering menu

If there are no problems, then 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, a menu subsection with elements for testing smartphone sensors, setting up a USB connection, performing internal and external memory tests.

If it didn't work the first time

Not on all devices it is possible to enter the engineering menu. Let's look at some common problems and how to fix them.

Android is a complex Unix-based operating system. If something cannot be done, you have not taken into account all the nuances of the functioning of a particular subroutine.

List of special codes

One of the common reasons for blocking the entrance to the engineering menu is the wrong 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. The list of combinations is given in the table. If you don't like the one you want, try another combination.

Table: code options for different Android models

DIY engineering menu

If none of the special codes fit, don't get upset. There are many applications on the network with the functionality of the engineering menu. It is worth noting that the postscript MTK in the names speaks eloquently of 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 improvement mode, and much more.

Mobileuncle MTK Tools provides a set of settings

Another program is MTK Engineering Mode. The program completely repeats the regular engineering menu.

MTK Engineering Mode repeats the regular engineering menu

For those whose device is not equipped with an engineering menu, there is another option: installing third-party firmware. Third-party builds very often have a wide range of customization options.

Where to begin

When you first enter the menu, you can get lost in the wilds of parameters.

Engineering menu settings

Settings open up huge possibilities for users.

Depending on the hardware platform, some items may not be available or may be missing.

In this section, you can configure the mobile connection settings.

Auto Answer. Enable/disable automatic answer to an incoming call.
band mode. Allows you to manually select the frequency range for the operation of the GSM module. You will see all technologies and frequencies for them supported by your smartphone model. If you wish, you can uncheck the ranges 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). This option enables or disables conditional forwarding. It must be supported by the operator.
AT Command Tool. A developer utility that supports AT commands. This menu item will be of interest to programmers and developers. Using this menu, you can perform various queries directly on the system without visual add-ons.
modem test. Setting the compatibility of the "access point" option with different types of connected devices.
network selection. Here you can select mobile communication standards (GSM, WCDMA, LTE). For additional energy saving, disable 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 the upper corner) and click Check Information. This option is convenient for checking the quality of services of a mobile operator.
GPRS. Setting up a connection to the mobile Internet, selecting an active SIM card (if there are several).
HSPA info. Information about the 3G network if supported by your mobile operator.
Mobile data service preferred. The Internet will be prioritized over voice traffic to increase the data transfer rate. Incoming calls may not go through.
Fast dormancy. Allows you to save battery power in third-generation networks. The option must be supported by the carrier.
RAT Mode (Phone Info). Allows you to select the preferred 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 quality of communication.
SIM ME Lock. This subsection allows you to configure the regional parameters of the GSM module (MNC, NCC) in manual mode.

Photo gallery: mobile communication options

We get to the main window of the subsection Turn on or turn off auto-answer Turn on or turn off conditional forwarding Set up the "Modem" mode Display information from the GSM module Set up mobile Internet Select the priority of the connection type Set up the operation of the 3G mode Select the type of mobile connection Check the network power Set up regional communication parameters

Wireless interfaces

The 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, start the debug mode.
CDS Information. Information about the parameters of wireless interfaces.
FM receiver. Checking the FM module of the device.
WiFi. Testing the module for transmitting and receiving information on the specified frequency channel.
WiFi CTIA. Recording logs of wireless technology tests.

Photo gallery: wireless data transmission

We select the section for checking the wireless modules of the device We check the bluetooth operation mode We find information about wireless interfaces We configure the FM module We check the operation of the WiFi module We write data about the WiFi module test to the log file

Audio - fine-tuning the sound playback parameters.
Camera - a set of options 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 - execution of 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 information about the battery.
Sensor - sensor calibration.
Multi-Touch - checks the number of available points for simultaneous touching the screen.
Location Engineer Mode - checking the parameters of the GPS module.

Photo gallery: equipment testing

We go to the section for checking electronic components Adjust the volume of the earpieces Adjust the power supply of the camera Adjust the standby mode Adjust the frequency of the central processor Adjust the sleep mode View information about the battery Adjust the touch screen Check the capabilities of the multi-touch function Adjust the GPS module

Adjusting the speaker volume

In the subsection, you can adjust the overall volume level, the volume of the headphones and the speakerphone.

Changes in volume settings should be treated carefully. All parameters are individual for a specific device model. Incorrect configuration may result in poor hearing performance.

There are a number of general options:

MaxVol - the overall volume level. The range of values is from 0 to 160. The larger the number, the louder the volume.
Sph - volume during a telephone conversation.
Mic - microphone sensitivity.
Ring - speaker volume for an incoming call.
Media - volume level when watching movies, listening to music and playing games.

Very often, users are unhappy with the volume of the speaker 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 an incoming call, then you need to increase the value of the Ring parameter. We advise you not to set a value higher than 200, this can lead to speaker failure. To hear you better, change the Mic parameter from 100 to 172. This will increase the speaker's sensitivity.

ROOT - a panacea for a smartphone

On a smartphone without root rights, the functionality of the engineering menu is limited: some items are not displayed, the changes made are not saved. Any interference with the operation of the smartphone requires open access to the system. Do not forget that getting root access can harm your gadget, the warranty on the device is void. We strongly recommend that you back up important information to a memory card and sync with your google account and remove it to avoid data loss. To unlock full access to the system, you can use one of the existing methods.

Installing the application directly on the device (KingRoot)

Superuser access can be opened from a smartphone using special programs. Consider the sequence of operations on the example of the KingRoot program:

After that, you can safely change the parameters in the engineering menu, all changes will be saved. If the result is negative, move on to the next method.

Obtaining superuser rights via PC (Kingo Root)

This method differs in a slightly larger number of preparatory activities:

The engineering menu is used to configure the device and test the hardware. This is a built-in subroutine of the system, which is an indispensable tool for both experienced users and beginners in the world of mobile devices. However, it should be noted that manipulations with the engineering menu can render the gadget inoperable.

Not many people know about the existence of a menu with advanced device settings in the Android OS - engineering menu . And someone knows, but does not know how to enter it and what to do with it.
In this article, we will show how to enter the engineering menu and some of its features.

You can enter the engineering menu simply by typing a special command (but I must add that this method does not work on all versions of Android and not on all devices)

The command to enter the engineering menu: *#*#3646633#*#*

Also, on some versions of Android, the command may work *#15963#* and*#*#4636#*#*

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

If this method does not work, you can use the alternative!

And it consists in installing the program (which, by the way, is freely available on Google Play) " Mobileuncle MTK Tools 2.4.0"

This program will open access to the engineering menu (that is, it will work similarly to a set of combinations*#*#3646633#*#*)

There are a lot of settings! The scope for experimentation is huge! You can debug and adjust almost EVERYTHING!

For clarity, let's briefly analyze the volume setting of the device:

We go into the program ---> select the section "Engineer Mode"

Because we are interested in setting the sound level, select ---> "Audio"

And voila, the menu of interest to us opens.

Max Vol - the same for the entire subsection, as a rule, it is set to 150 (you can change 0-160 - it changes if you select the Media item in the subsection).

If in some submenu, for example, Audio - Normal - Sph, the overall level is not available for adjustment, then enter another submenu, for example, Audio - Normal - Media - there you will be able to adjust the overall volume level.

Sub-points:
Sph - volume levels during a telephone conversation,
Mic - microphone sensitivity levels,
Ring - call volume,
Media - volume when playing music, movies, games.

Ring volume levels are set in Audio - LoudSpeaker - Ring
MaxVol=150
Levels: 120 130 145 160 180 200 (more starts wheezing)

Conversation volume levels in the phone speaker in Audio - Normal - Sph
MaxVol=150
Levels: 100 120 130 135 140 145 150

Microphone speaking volume levels in Audio - Normal - Mic
Levels: 100 172 172 172 172 172 172

Media volume levels are set in Audio - LoudSpeaker - Media

Levels: 110 130 160 190 210 230 250

All the same can be configured for the Headphone mode, by analogy:

Speaker volume levels are set in Audio - LoudSpeaker - Sph
Max Vol = 150 (it is the same for the entire section)
Levels: 80 100 110 120 130 140 150 (more starts wheezing)

Now all volumes are regulated in adequate ranges.
If you are not satisfied with the volume levels, you can set your own values (the larger the value, the greater the volume when adjusting the volume keys, or the greater the microphone sensitivity)

By analogy, you can customize most sections! Experiment!

Not every person who has his own mobile phone is thoroughly versed in the various features of the operation of his device and the intricacies of its settings. In particular, many do not know how to enter the phone's engineering menu and why you need to do this at all. In fact, the engineering menu often becomes one of the main tools of specialists from various service centers who eliminate all kinds of firmware errors or any malfunctions in the internal program of the device.

How to enter?

Many people have heard about the engineering menu and know that you can enter it, but do not know how. You can enter the engineering menu by dialing *#*#3646633#*#* and pressing the Audio button, or simply by using the specialized MTK Recovery utility.

Audio

This section has several categories:

Set Mode - select a profile.
Normal Mode - standard profile.
Headset Mode - mode of using a special headset.
LoudSpeaker Mode - the mode in which the loudspeaker in the phone is activated.
Speech Enhancement - a mode in which a fully automatic correction of speech signals is carried out.

Before choosing any limit values, you should make sure in advance that this will not cause you to run into any sound problems later. In the vast majority of cases, it is highly not recommended to do this, for the reason that the maximum settings can provoke the appearance of a rattling effect and a number of other interferences, as well as create an extra load on the speakers, which provokes their faster failure.

In addition, never forget that before changing certain settings, it is imperative to write down those that were set by default so that in case of any problems you can quickly return them to their original value.

normal mode

After you have figured out how to enter the phone's engineering menu and what its main paragraphs are, we go into Normal Mode. Here you will see a menu in which there are four positions, among which the first item is the profile number. Paragraph FIR - 0 - must be left and not touched, and then go below, into the following characteristics.

Initially, you should set up the general volume modulation Tone, for which you will need to set the optimal volume value in the corresponding Value paragraph and press the Set button. Initially, you can set it to 1, or you can try a wide variety of options from 0 to 100. The higher the value, the quieter the sound, while 0 is the maximum possible volume. But, as mentioned above, it is highly not recommended to set the value to zero, as the speakers will start to give out a wide variety of side effects, such as sound rattling and much more.

Now we go to the Type Side tone menu, but it is initially not recommended to touch anything here, since it may happen that during the conversation you will hear only yourself, but not the interlocutor. Or try to change at your own risk the values in different ways. The most suitable are the following characteristics:

Audio - 1.
Speech-1.
FM-1.
Microphone - 1.
Key-tone - 70.

If it seemed to you that music or the radio was playing too quietly in the headphones, then in this case you can slightly adjust the profile for the headset, but do not forget to restart the phone after that so that the settings are saved.

How to change the volume of conversations?

The conversational volume through the engineering menu changes as follows:

We go to the menu.
Choose Audio.
We find the Speech enhancement characteristic, which is responsible for how well we hear the caller on the other side.
Click on the Common Parameter button, and then select Normal Mode.
Now we look at the characteristic Parameter (0), after which we set Parameter - 6.
We start editing this parameter and change it from the standard 400 to 1, after which we press the Set key.
Now the audibility will become even more than acceptable, and in some cases you even have to lower the volume (often this effect is given by the Samsung engineering menu).

Headphone volume

By setting the following characteristics, you can adjust the volume of headphones or speakers in the direction you need while watching a video, as well as listening to music or radio:

Head Set Mode (type):

Audio = 10.
Side Tone = 50.

LoudSpeaker Mode (type):

FM = 10.
Side Tone = 50.
Audio = 15.

Normal Mode (type):

FM = 10.
Side Tone = 50.
Audio = 20.

By setting these characteristics, you will get an acceptable volume in the process of listening to any material. In particular, this allows you to make both the Samsung engineering menu of modern models, and the menu of most other phones.

Service menu

The service menu also has several main items that users may be interested in:

1.BatteryLog. The engineering menu of FLY and other modern phones allows you to get extremely accurate information about the state of the battery, including temperature, voltage and other fine parameters.

2.Touchscreen. A fairly wide parameter, which has the engineering menu of FLY and other manufacturers that produce modern touchscreen phones. This section contains several submenus:

handwriting. A fairly simple option is to draw with your finger on the screen, which allows you to check how well the sensors respond to touching them.
PointVerification. It allows you to diagnose and, when you press the corresponding button, shows if there are any errors and, if so, how much they deviate from the desired value.
LineVerification. Almost the same as the previous paragraph, only here lines are drawn from one point to another.
ShakingVerification. Shake check.

additional characteristics

In the Type section, you can also change other characteristics that interest you, ranging from the volume of the speaker during negotiations (Speech) to the volume of keystrokes (Key tone). Again, in all parameters, the value must be set in the range from 0 to 255, after which the Set button is pressed, which saves the characteristics. The exact same procedure is also set in Headset Mode if you want to fine-tune the volume on your headphones. If you are a fan of a sufficiently high volume, which the phone cannot initially provide you with, then in this case, values \u200b\u200bfrom 1 to 5 will be optimal for you, but not 0 at all.

It is immediately worth noting the fact that not specific volume values \u200b\u200bare given here, but only the principle is described. Specific values will already directly depend on the characteristics of your speaker and microphone, because, for example, the settings that the Explay engineering menu provides can bring the parameters an order of magnitude higher than the capabilities of your phone, as a result of which it, trying to match these parameters, may simply break. Keep this in mind and try to choose real characteristics that can meet your needs.

How to check?

In most phones, the engineering menu provides a specialized Ring Tone item, which can be used to listen to any standard ringtones directly from the engineering menu in order to determine how much we have changed the volume. Of course, it's best to call someone after completing all the settings and "live" check the settings, but if you are trying to do everything quickly and do not want to spend a lot of time, this function is the most optimal for you.

Turning up the volume of conversations

Setting through the engineering menu of the volume of negotiations is carried out in the above service menu. You can access it as follows:

Dial *#*#3646633#*#*.
Install the specialized program Mobileuncle Tools on your phone. The first menu in this program is the entrance to the engineering menu of phones. Using the program is much more optimal than doing everything manually, since there is no need to dial a large number of digits. After all, only the values \u200b\u200bthat will be optimal sometimes have to be selected within a few hours.

After that, you can dial various numbers and check how well you can hear your interlocutor and yourself.

Explay features

A separate feature of the Explay engineering menu is the Battary parameter, which is responsible for battery levels. This characteristic determines the level of battery charge and tells the phone when to turn off the power during charging. Thus, it is possible to slightly increase the battery life of the phone, but at the same time, you should understand that this also affects battery life, so changing these characteristics is not always the best solution.

It is also worth noting that the new type of phones have a function when you cannot call other subscribers when the battery is low. It is in this situation that knowledge of how to enter the phone's engineering menu to change the battery characteristics may come in handy, which will allow you to spend its resource on outgoing calls longer.