For many people, buying a new tablet or smartphone is a real event. Each owner expects that the new gadget will delight him for many years with reliable operation and the absence of problems associated with its operation.
And in this case, it does not matter who is the assembler of the device and what operating system is installed on it. But it often happens that modern mobile devices can hardly be called ideal.
Some time after the start of use, moments appear that the owner will probably want to fix in one way or another. Some are trying to finalize the software part of the mobile assistant to the ideal state. It all depends on what is considered ideal. One of the most accessible tools in the Android mobile operating system is engineering menu.
Android engineering menu: setup secrets
At the final stage of configuring the software shell of a mobile device running on the Android operating system, developers use the so-called Android engineering menu. The engineering menu is understood as the interface of a special program that allows you to make changes to the operation of the device, as well as view information from sensors and perform technological tests. The thoughtless use of this element can lead to unpredictable consequences. Most often, access to the engineering menu is hidden from users. However, his secret is essentially already known to many. To understand how you can call the engineering menu, just spend a few minutes looking for recommendations.
Important Points
Exit to the engineering menu "Android" can not be performed on all mobile devices. In order to take advantage of its capabilities, you need to make sure that the gadget meets a number of requirements. Primarily, CPU devices must be manufactured by MediaTek. On many inexpensive Spreadtrum models, the popular Snapdragon from Qualcomm, and various Tegra Nvidia and Intel, it is useless to try to launch the engineering menu, since it is missing. You will not be able to achieve performance even if an appropriate application is provided.
In addition, various modified operating systems, such as the popular CyanogenMod, do not allow you to run the configuration program. This is due to the fact that initially these systems were developed for devices with Qualcomm processor, which do not support the Android engineering menu.
It is also desirable that the operating system be original or at least created on a basic basis. The application file itself must be present among the programs, being hidden from standard conductor. So, for example, some manufacturers of mobile gadgets, after making the necessary settings for the software part, simply delete the Android engineering menu. In this case, recommendations for using the engineering menu are useless.
Using Secret Combinations
To get into the engineering menu settings in the Android operating system, you can use several methods. It is impossible to say which of them is better, since a direct comparison would be incorrect. Let's consider each of these methods in turn. One of the oldest options, which was used in the "ancient" models of tablets and smartphones, is that in special program- dialer, the user had to dial the engineering menu code. The operation was carried out similarly to checking the balance on the account. If the device recognizes and accepts the combination, the setup application starts. Some mobile device manufacturers use their own modified code. That's why standard set won't work here. In other situations, to call the engineering menu, you must dial the following combination of characters "*#*# 36 46 63#*#*". That's all.
The usual way
Using a secret combination of characters may not be convenient in all cases. The user can simply forget the correct order of the numbers. In the case of a modified set, it will be easier to use the program instead of finding the correct order of the characters. One of the most famous apps is Mobile Uncle Tools. This application is distributed free of charge, so the user will not have problems finding and installing it. At the time of this writing, current version was 2.9.9 or build 3.1.4, which has additional support for new processors.
In order for the program to work correctly, the user will first need to get root rights on their gadget. To get root rights, you can use various applications, for example, SuperSu or KingRoot. In this article, we will not talk about the features of working with a rooted device, since this is a separate rather voluminous topic. When the application is launched, you will need to select the third item, which is called Engineer Mode. Next, in the window that opens, select "Work with MTK". When a question about granting root access appears, you need to confirm the operation.
Restoring access to engineering mode
In the event that the manufacturer of the mobile device has decided to prudently remove the configuration program in order to ensure the security of the operating system, it will be possible to install it again. To do this, the user will need to find an installer on the Internet that restores EngineerMode.apk. When you find this component, you will only have to install it. Due to the abundance of analogue clones, we will not indicate the exact name. You can simply copy the specified file to system folder(system\app). After performing these operations, you can use any of the following methods to access the engineering menu: you can dial a number or call the menu directly from the program interface. It is worth noting that the user will need root rights to perform this operation.
Miracle program and its possibilities
Setting up Android through the engineering menu opens up the possibility for the user to solve several important tasks at once. In particular, here you can adjust the microphone sensitivity and speaker volume, reduce power consumption, limit the scanning of unnecessary ranges and reduce the search time for satellites. Let's take a closer look at the above functions.
How to increase the volume?
The volume of the call using the engineering menu is increased quite simply. To do this, select the "Audio" section. You will see a list of available modes. The Ring subsection of the LoudSpeaker Mode section is responsible for the system speaker in the system. Do not change the value of the parameter in the first window. In the second window, you can set a higher value for the parameter. After finishing editing, click on the Set button, which is located here. Next, you need to restart the device, while correctly exiting the program.
Operator Frequencies
To optimize the power consumption of your mobile device, you can try disabling the scanning of unnecessary frequency bands. The standard frequencies for working in 2G and 3G networks in our country are 900 and 1800 MHz. A pair of 850 and 1900 MHz is responsible for the American standard. To enable or disable the band you do not need, you need to use the Band Mode item in the engineering menu. Here you need to alternately go to the settings for both SIM cards and check the boxes next to the desired items. Pressing the Set button serves as confirmation.
How to improve GPS?
To improve the performance of the global positioning system, you must select the Location item in the Android engineering menu. Next, use the Location Based Service item and open the EPO. Here you need to make sure that the Download and Enabled items are ticked. Then you need to return to the YGPA item, select the information section and press "Full" - "Cold" - "Restart" in turn. Then you need to select the item Satellites or "Satellites". Until the answer is fixed on the map. This whole procedure will take 2 to 5 minutes. You just have to exit the engineering menu, close the program and reboot the device.
The engineering menu on Android devices is a special "wired" application in operating system, which allows to produce fine tuning devices. This is necessary to debug the operation of the hardware and, of course, software. But often users want to change any settings on their own. In this case, the question arises of how to enter the Android engineering menu. This can be done with special service codes or third-party software.
What opportunities does the engineering menu have
Settings and menu design on Android devices may differ depending on the phone manufacturer. In general, users resort to the help of the engineering menu for the following reasons:
- Audio settings on the phone (call volume, voice of the interlocutor during a call);
- Changing camera settings;
- Using recovery mode;
- Setting the microphone sensitivity;
- Disabling unused frequencies to save phone battery;
- Obtaining information about the MAC address of the device;
- Setting up Bluetooth and Wi-Fi.
The Android engineering menu provides the user with almost limitless possibilities. But you should always remember that only advanced users can use it. Changing some settings may cause your smartphone or tablet to not work properly. If you do not know what each menu item is directly responsible for, simply do not touch it.
The developer mode includes setting up Hardware Testing equipment, and also contains the following items:
- Audio - volume control in the phone's speakers.
- Camera - allows you to configure various camera settings (image size, type, and more).
- Diving current camera shows the current camera.
- CPU Stress Test produces a test load on the central processor.
- De-sense is a device manager that manages configuration settings.
- Display - setting the frequency of the outgoing signal.
- IO - setting up input / output operations.
- Memory - key information about memory.
- Power - information about the battery.
- SD Card Test - testing a memory card.
- TouchScreen - setting touch screen, sensitivity test.
- USB - performance testing USB port on your phone.
In the Connectivity tab, you can get information about devices that work with the outside world. These include Bluetooth, Wi-Fi and FM module. The Log and Debugging tab allows you to view the battery log, set the debugger level, and run a special MTK log. In the Others tab, you can change fonts, as well as view the temperature of the processor and battery.
How to enter the engineering menu: using code combinations
To enter the engineering menu as quickly and easily as possible, you will need special engineering codes. Each manufacturer has its own combination that opens access to the engineering menu in Android.
To enter the menu, you need:
In most cases, this technique allows you to open the service menu. Below are some combinations for the most popular phones:
- Models from HTC - *#*#3424#*#*, *#*#4636#*#* or *#*#8255#*#*;
- Samsung devices - *#*#197328640#*#* or *#*#8255#*#*;
- Sony smartphones - *#*#3646633#*#*, *#*#7378423#*#* or *#*#3649547#*#*;
- Huawei phones - *#*#2846579#*#* or *#*#14789632#*#*;
- Mobile from ZTE - *#*#4636#*#*.
There is also a universal code that is suitable for most smartphones and tablets running on the MTK processor. You can check your device's data sheet to see what processor you have. If this is a MediaTek (MTK) product, then try using the combination *#*#54298#*#* or *#*#3646633#*#*.
If it works, then you will see the developer menu in front of you. Some engineering codes on Android do not work in operating version 4.2.1 and 4.2.2.
What third-party applications can be used to enter the engineering menu
How to enter the engineering menu on Android if Android codes do not work? There is a way. To enter the engineering menu, you will need one of the applications that will allow you to get into developer mode without entering a combination. In the official store Google Play There are several such programs. One of them is "Launching the engineering menu of the MTK".
To use it, you need:
- Go to the "Play Market", while entering the name of the program in the search bar.
- Download and install it.
- Run on your phone.
After that, you will see a couple of tabs on which there will be various settings.
The application allows you to perform various tests (for example, a processor stress test), get information about the modem or memory, and much more. You can also make changes to the hardware. To do this, you only need to open the relevant sections and configure the settings. In this case, the phone will be on all the time.
An alternative is the Mobileuncle tools program. You can download it on the Internet. Install the application, and then go to the "Engineer Mode" submenu. Almost all menu items of the developer will be available in it.
We are all familiar with the rich settings of Android devices - each smartphone or tablet can be customized by activating or deactivating certain functions, adjusting certain parameters. But few people suspect the existence of such a thing as the Android engineering menu. It is hidden from view, since there is not much for a simple user to do here. But if you are an advanced user or want to gain experience in fine-tuning the device and operating system, then this menu will come in handy.
Service menu options
Let's see what the engineering menu is for in a smartphone? The answer is simple - for very fine tuning of the device. For example, increasing the volume on Android is possible only through the engineering menu. Here you need to visit the audio settings item and play around with the parameters presented. Here you can manually adjust the sound volume in various modes and at various levels of volume. Consider an example:
- You find that at maximum volume, the speaker of your smartphone begins to wheeze;
- We go into the engineering menu using one or another command;
- We go into the audio settings and change the volume in a given mode and in a given gradation;
- We exit the engineering menu and check the results - the volume should decrease.
Perhaps only such a fine adjustment through the standard setup menu? Naturally, there is nothing of the kind here at all.
Here you can also adjust the sound in the headphones, adjust the sensitivity of the microphone, and perform other actions with the sound. Before you go into the settings, you need to find detailed instructions, which will help you make adjustments as correctly as possible, without the risk of damaging the speakers with a microphone or completely depriving your smartphone / tablet of voice.What other functions are there in the engineering menu? Checking network modules, adjusting the reception range, setting up auto-answer, testing the modem, setting up connections with other devices, setting up the receiver, testing the camera, sensor, screen, battery and other modules. Geolocation settings are placed in a separate hidden menu - here you can check the performance of the GPS chip, enable / disable A-GPS, and check other settings. It is also possible to adjust fonts, play around with USB settings and perform other actions.
Please note that the service menu on Android is intended for professionals who are aware of their actions. If you climbed here out of idle curiosity, try not to touch the parameters that you do not understand and do not rearrange the sliders with the settings.How to enter the engineering menu on Android
Entry into the engineering menu on Android is most often carried out using special commands similar to the most common USSD commands. The difference is that you do not need to press the call button at the end - after typing the command, an automatic transfer to the specified menu will occur. The universal code for the engineering menu on Android is *#*#3646633#*#* . It works on many phones and allows you to instantly enter the service settings.
Some smartphones and tablets do not respond to the above command. Therefore, you can try the following options:
| Device manufacturer | Team |
| Sony | *#*#7378423#*#* |
| *#*#3646633#*#* | |
| *#*#3649547#*#* | |
| Philips | *#*#3338613#*#* |
| *#*#13411#*#* | |
| ZTE, Motorola | *#*#4636#*#* |
| HTC | *#*#3424#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Samsung | *#*#197328640#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Prestigio | *#*#3646633#*#* |
| LG | 3845#*855# |
| Huawei | *#*#2846579#*#* |
| *#*#14789632#*#* | |
| Alcatel, Fly, Texet | *#*#3646633#*#* |
| Smartphones and tablets with a MediaTek processor (most Chinese devices) | *#*#54298#*#* |
| *#*#3646633#*#* | |
| Acer | *#*#2237332846633#*#* |
The entrance to the engineering menu on Android is performed immediately after entering the command. There is no dependence on the version of the operating system - the codes are valid for Android 2.2, Android 4.4 and other versions of Android OS. If the code does not fit, you should look for other combinations.
Some commands lead not to the service menu, but to the testing menu - it allows you to check the screen, sound, wireless modules, microphone, and much more. Menus for testing can be in English or Russified.Some manufacturers deprive smartphones and tablets of access to the engineering menu, replacing it with numerous commands for testing modules or setting certain parameters. For example, this is what Samsung does - many new models are deprived of a single service menu. Information about available service teams can be found on specialized resources and on the websites of service centers.
To access the engineering menu, you can use special applications. A typical example is the application Mobileuncle MTK Tools. It will allow you to get separate access to the device settings and to the operating system settings. The application is really convenient, but it has a drawback - it only works on devices with MTK processors.
Setting up Android through the engineering menu is fraught with certain risks. For example, beginners always have the opportunity to accidentally disable one or another functionality. Understanding the purpose of certain items, you need to get acquainted with the appropriate instructions. Otherwise, equipment failure may occur. If you are afraid of damaging or breaking something, do
We are all familiar with the rich settings of Android devices - each smartphone or tablet can be customized by activating or deactivating certain functions, adjusting certain parameters. But few people suspect the existence of such a thing as the Android engineering menu. It is hidden from view, since there is not much for a simple user to do here. But if you are an advanced user or want to gain experience in fine-tuning the device and operating system, then this menu will come in handy.
Service menu options
Let's see what the engineering menu is for in a smartphone? The answer is simple - for very fine tuning of the device. For example, increasing the volume on Android is possible only through the engineering menu. Here you need to visit the audio settings item and play around with the parameters presented. Here it is possible to manually adjust the sound volume in various modes and at various volume gradations.
Consider an example:
- You find that at maximum volume, the speaker of your smartphone begins to wheeze;
- We go into the engineering menu using one or another command;
- We go into the audio settings and change the volume in a given mode and in a given gradation;
- We exit the engineering menu and check the results - the volume should decrease.
Perhaps only such a fine adjustment through the standard setup menu? Naturally, there is nothing of the kind here at all.
Here you can also adjust the sound in the headphones, adjust the sensitivity of the microphone, and perform other actions with the sound. Before getting into the settings, you need to find detailed instructions that will help you make the adjustments as correctly as possible, without the risk of damaging the speakers with a microphone or completely depriving your smartphone / tablet of voice.
What other functions are there in the engineering menu? Checking network modules, adjusting the reception range, setting up auto-answer, testing the modem, setting up connections with other devices, setting up the receiver, testing the camera, sensor, screen, battery and other modules.
Geolocation settings have been moved to a separate hidden menu– here you can check the performance of the GPS chip, enable/disable A-GPS, and check other settings. It is also possible to adjust fonts, play around with USB settings and perform other actions.
Please note that the service menu on Android is intended for professionals who are aware of their actions. If you climbed here out of idle curiosity, try not to touch the parameters that you do not understand and do not rearrange the sliders with the settings.
How to enter the engineering menu on Android
Entry into the engineering menu on Android is most often carried out using special commands similar to the most common USSD commands. The difference is that you do not need to press the call button at the end - after typing the command, an automatic transfer to the specified menu will occur. The universal code for the engineering menu on Android is *#*#3646633#*#*. It works on many phones and allows you to instantly enter the service settings.
Some smartphones and tablets do not respond to the above command. Therefore, you can try the following options:
- *#*#4636#*#*;
- *#15963#*;
- *#8255#*;
- *#*#7378423#*#* (for Sony smartphones);
- *#*#3424#*#* (code for HTC smartphones);
- *#*#2846579#*#* (code for Huawei smartphones).
The entrance to the engineering menu on Android is performed immediately after entering the command. There is no dependence on the version of the operating system - the codes are valid for Android 2.2, Android 4.4 and other versions of Android OS. If the code does not fit, you should look for other combinations.
Some commands lead not to the service menu, but to the testing menu - it allows you to check the screen, sound, wireless modules, microphone, and much more. Menus for testing can be in English or Russified.
Some manufacturers deprive smartphones and tablets of access to the engineering menu, replacing it with numerous commands for testing modules or setting certain parameters. For example, this is what Samsung does - many new models are deprived of a single service menu. Information about available service commands can be found on specialized resources and on the websites of service centers.
To access the engineering menu, you can use special applications. A typical example is the Mobileuncle MTK Tools app. It will allow you to get separate access to the device settings and to the operating system settings. The application is really convenient, but it has a drawback - it only works on devices with MTK processors.
If your smartphone / tablet works on a different platform, you can try looking for alternative applications to access the engineering menu on Android.
Setting up Android through the engineering menu is fraught with certain risks. For example, beginners always have the opportunity to accidentally disable one or another functionality. Understanding the purpose of certain items, you need to get acquainted with the appropriate instructions. Otherwise, equipment failure may occur. If you are afraid of damaging or breaking something, make a full backup of your device - in case of a fatal error, you can perform hard reset and restore your smartphone or tablet.
Never enter commands whose purpose you do not know. The thing is that some of them are designed to quickly change critical system parameters or to perform a general reset. Moreover, some commands execute general reset without confirmation, instantly erasing all content.
The engineering menu on Android devices is a special "wired" application in the operating system that allows you to fine-tune the device. This is necessary to debug the operation of the hardware and, of course, software. But often users want to change any settings on their own. In this case, the question arises of how to enter the Android engineering menu. This can be done with special service codes or third-party software.
Developer menu: what are the possibilities
Settings and menu design on Android devices may differ depending on the phone manufacturer. In general, users resort to the help of the engineering menu for the following reasons:
- Audio settings on the phone (call volume, voice of the interlocutor during a call);
- Changing camera settings;
- Using recovery mode;
- Setting the microphone sensitivity;
- Disabling unused frequencies to save phone battery;
- Obtaining information about the MAC address of the device;
- Setting up Bluetooth and Wi-Fi.
The Android engineering menu provides the user with almost limitless possibilities. But you should always remember that only advanced users can use it. Changing some settings may cause your smartphone or tablet to not work properly. If you do not know what each menu item is directly responsible for, simply do not touch it.
The developer mode includes setting up Hardware Testing equipment, and also contains the following items:
- Audio - volume control in the phone's speakers.
- Camera - allows you to configure various camera settings (image size, type, and more).
- Diving current camera shows the current camera.
- CPU Stress Test produces a test load on the central processor.
- De-sense is a device manager that manages configuration settings.
- Display - setting the frequency of the outgoing signal.
- IO - setting up input / output operations.
- Memory - key information about memory.
- Power - information about the battery.
- SD Card Test - testing a memory card.
- TouchScreen - touch screen setting, sensitivity test.
- USB - testing the operation of the USB port on your phone.
In the Connectivity tab, you can get information about devices that work with the outside world. These include Bluetooth, Wi-Fi and FM module. The Log and Debugging tab allows you to view the battery log, set the debugger level, and run a special MTK log. In the Others tab, you can change fonts, as well as view the temperature of the processor and battery.
Entering the menu: using code combinations
To enter the engineering menu as quickly and easily as possible, you will need special engineering codes. Each manufacturer has its own combination that opens access to the engineering menu in Android.
To enter the menu, you need:
In most cases, this technique allows you to open the service menu. Below are some combinations for the most popular phones:
- Models from HTC - *#*#3424#*#*, *#*#4636#*#* or *#*#8255#*#*;
- Samsung devices - *#*#197328640#*#* or *#*#8255#*#*;
- Sony smartphones - *#*#3646633#*#*, *#*#7378423#*#* or *#*#3649547#*#*;
- Huawei phones - *#*#2846579#*#* or *#*#14789632#*#*;
- Mobile from ZTE - *#*#4636#*#*.
There is also a universal code that is suitable for most smartphones and tablets running on the MTK processor. You can check your device's data sheet to see what processor you have. If this is a MediaTek (MTK) product, then try using the combination *#*#54298#*#* or *#*#3646633#*#*.
If it works, then you will see the developer menu in front of you. Some engineering codes on Android do not work in operating version 4.2.1 and 4.2.2.
Using Third Party Applications
How to enter the engineering menu on Android if Android codes do not work? There is a way. To enter the engineering menu, you will need one of the applications that will allow you to get into developer mode without entering a combination. There are several similar programs in the official Google Play store. One of them is "Launching the engineering menu of the MTK".
To use it, you need:
- Go to the "Play Market", while entering the name of the program in the search bar.
- Download and install it.
- Run on your phone.
After that, you will see a couple of tabs with various settings.
The application allows you to perform various tests (for example, a processor stress test), get information about the modem or memory, and much more. You can also make changes to the hardware. To do this, you only need to open the relevant sections and configure the settings. In this case, the phone will be on all the time.
An alternative is the Mobileuncle tools program. You can download it on the Internet. Install the application, and then go to the "Engineer Mode" submenu. Almost all menu items of the developer will be available in it.
Now you know how to turn on the mode android developer. It will help you quickly necessary settings or monitoring individual components smartphone.
Smartphones and tablets running Android have many interesting features hidden from prying eyes.
Why are they hidden? Firstly, so that an inexperienced user does not break anything, and secondly, they are needed in especially rare cases and are not used regularly. Today we will talk about the engineering menu.
What is it and why is it needed?
This is a special program that developers use at the final stage of configuration software platform mobile device. With it, they bring last changes into the operation of the device, check the functioning of various sensors and perform testing of system components. Also, hidden functionality is used to obtain a large amount of system information and conduct various tests (about 25 pieces).
Attention! This section created for experienced users who bear full responsibility for the consequences.
The engineering menu is available on smartphones and tablets running on the MediaTek processor. On the Qualcomm chipset, it is either cut down or absent altogether.
How to open the engineering menu?
To enter the engineering menu, you need to enter a special command in the dialing application: *#*#3646633#*#*. On some versions, the code *#*#4636#*#* or *#15963#* may work.
If the code didn't work, or if you don't have a dialer app (relevant for tablets that don't support calls), the MobileUncle Tools or MTK Engineering apps, which can be downloaded for free from Google Play, will help.
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 special code: *#*#3646633#*#*
Also on some Android versions command can 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#*#* - smart phones, 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 MTK processor), to get to the engineering menu had to install 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'm sure you'll find it there free apps and for other phones.
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 when headphones are connected to the phone or tablet or external speakers and you turn on 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 completion phone call 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 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 different models. it MTK platform, so be prepared to strain your brain and look 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) - at its core hidden application, which is used by developers 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 device malfunctions.
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.
In the dial pad, enter a combination of numbers and symbols to enter the menu
Table: combinations to start Engineering Mode
| Device manufacturer | Team |
| Sony | *#*#7378423#*#* |
| *#*#3646633#*#* | |
| *#*#3649547#*#* | |
| Philips | *#*#3338613#*#* |
| *#*#13411#*#* | |
| ZTE, Motorola | *#*#4636#*#* |
| HTC | *#*#3424#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Samsung | *#*#197328640#*#* |
| *#*#4636#*#* | |
| *#*#8255#*#* | |
| Prestigio | *#*#3646633#*#* |
| LG | 3845#*855# |
| Huawei | *#*#2846579#*#* |
| *#*#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 in a standard way the service menu cannot be launched, 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 installed firmware Cyanogen mod. 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.
To enter the engineering menu, select Engineer Mode
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.
In the program, call the additional menu and select the item Secret code explorer to see the list of codes
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 on Google Play: https://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 installing root access.
Instructions for obtaining root access through the Farmaroot application
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.
Sequentially change the maximum volume values for each level
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.
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 see if the other person hears you better.
Increased microphone sensitivity will allow the interlocutor to hear 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.
Disabled frequencies save battery power
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) - analogue of Bios on a computer, allows you to manage the device without logging in to the Android system. Recovery Mode Features:
- resetting the settings to standard;
- firmware update;
- access to root rights;
- creation backup 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.
After setting the settings, do not forget to press the SET button
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 given 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 |
| *2767*3855# | Firmware change, total rollback of settings. | |
| *#*#232339#*#* *#*#526#*#* |
Checking Wireless Connections | |
| *#*#34971539#*#* | Detailed information about the camera | |
| *#*#232338#*#* | View Wi-Fi Address | |
| *#*#273283*255*663282*#*#* | 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 (+ call) | Verizon Wireless | |
| 3845#*851# | T Mobile | |
| 3845#*850# | AT&T |
If for some reason service code didn't work, don't worry - install and run the Secret Codes app (Google Play link: https://play.google.com/store/apps/details?id=fr.simon.marquis.secretcodes&hl=en). 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.
There are many ways to improve a mobile device on Android using the engineering menu. The menu structure differs in different device models, but the basic functionality is preserved everywhere. When opening and changing parameters in the service section, be careful - some commands lead to system failures and device failure.
To enter the engineering menu, dial the number *#*#3646633#*#* and click on Audio or install the program MTK Recovery and enter the engineer through the program menu.
Description of service menu items:
- BatteryLog- information about the battery (status, charge level, voltage, temperature, condition, etc.)
- touch screen- contains several submenus
- handwriting- a simple finger drawing on the screen, serves as a test of screen responsiveness
- Verification - PointVerification- screen calibration test, when you click on the marked point, it shows the error
- Verification - LineVerification- same as PointVerification, only draws lines from one point to another
- V erification - ShakingVerification- shake test
- GPRS- GPRS operation tests, PDP (Packet Data Protocol) test
- Audio- setting all volumes and everything related to sound, contains the following submenus:
- Set Mode- select phone mode (Normal mode - normal mode, Headset mode - headset-headphones, Handfree mode - "hands free", most likely a bluetooth headset)
- normal mode- settings for normal mode
- Headset mode- settings for headphone mode
- Loud Speaker Mode- setting the speaker mode (the same Handfree mode?)
- Speech enhancement- adjustment/correction of speech signals
- debug info- information on debugging, the values are set via Parameter 0-15 and what they are responsible for is unknown.
- Speech logger- call recording. When you turn on "enable" after a conversation, it creates a file in the root of the sd-card with a name like this: Sun_Feb_2012__01_15_31.vm (Sunday_February_2012__time01_15_31.vm), I don't know what these files are and how to open them. Folder /sdcard/speechlog (which is specified as File location) - does not automatically create if you create such a folder manually, after the conversation it will be empty. When you press the "play" button in the Speech Logger menu, all *.vm files created on the sd-card are shown, and after clicking on them, nothing happens.
- camera- contains several submenus
- A.F.E.M.- choice of test for the camera (AF - auto focus)
- Raw Capture- starts Raw capture test
- start preview- shows the image from the camera on the screen
- WiFi- contains several submenus:
- Tx- Wifi Tx Registers tests
- Rx- Wifi Rx Registers tests
- EEPROM- this is the WiFi adapter firmware and the ability to disable / enable its functions via addresses (h, byte). Once again, I categorically do not advise you to try to change something, you can tightly kill the WiFi adapter and it will be very problematic to restore it, even if you make a "save as file" backup (for some reason, all values \u200b\u200bare saved as zero - 0000). I personally do not even suspect that we have an adapter installed.
- temperature sensor- temperature test WiFi adapter at work
- MCR- it is possible to read/write Value(h) values at Addr(h) address
- Bluetooth- contains submenu:
- TX Only test- specify the values, click, then Done, passes the Bluetooth Tx Registers test
- test mode- includes test mode
- NetworkInfo- information about RR (what I don’t know) select a tick about what we want to see information about, then press the button on the phone, select Check Information, look.
- AutoAnswer- contains only the "enable-enable/disable-disable" button. This is an auto pick up of the handset incoming call(checked).
- YGPS- tests and information about yGPS
- AGPS- the only menu in Russian, AGPS settings
Audio section menu:
- Set Mode- profile selection
- normal mode– standard (general, normal) profile
- Headset mode- headset mode
- Loud Speaker Mode- loudspeaker mode
- Speech enhancement- speech signal correction mode
Before choosing the maximum possible values, make sure it doesn't create any sound problems. It is usually not recommended to set it to 0, as this can cause the effect of rattling and other noise + gives unnecessary additional load on the speakers.
Before changing values, always write down what the defaults were, so that in case of which you can return them.
We use Normal mode:
- You will see a menu with four positions, where the first item is the profile number.
- We leave FIR - 0 and do not touch it. Let's go down to the following options.
- First, we set up the general volume modulation Tone, for this, in the Type menu section, select the Tone item (if it is not selected by default), then in the Value section below, set the volume value and click Set.
- Set to 1, but you can try different options from 0 to 100 - the higher the value, the quieter the sound, 0 is the maximum volume, however, it is not recommended to set 0, as the speakers will produce unpleasant side effects in the form of rattling and other bad things.
- Next, in the Type Side tone menu, and in no case do not touch it, otherwise you will hear yourself and not the interlocutor during the conversation. Or change the method of scientific poke at your own peril and risk
- Set Audio to 1
- Set Speech to 1
- In FM we put 1
- Set the Microphone to 12
- In Key tone it is by default 70 - did not change.
If it seems to you that the radio or music is playing quietly in the headphones, you can also edit the profile for the headset. Reboot your phone.