Engineering menu Android 4.1 2 volume. Entering the engineering menu on Android (command and program)

Often in Chinese (and probably not only Chinese) phones based on Android, in the engineering menu there are far from optimal settings for the volume of the speaker, headset (headphones) and microphone; we will look at fixing them in this article.

How to get to the engineering menu of an Android phone

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

Also on some Android versions the command might work *#15963#* and *#*#4636#*#*

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

Here are the codes known to me for opening the engineering menu on different phones and tablets:

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

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

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

*#*#7378423#*#* – Sony smartphones

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

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

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

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

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

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

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

On my phone (based on an MTK processor), in order to get to the engineering menu I 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 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 look at setting the device’s volume level:

We go into the program or dial the 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 phone’s engineering menu, so 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 get to almost any phone settings. But it’s not enough to get to them, you need to know how to manage them.

Therefore, do not change what you have no idea about.

At worst, write down the parameters that were before your intervention, so that you can return them back later. Let's continue!

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

And... magic! The menu of interest to us for setting the parameters of the speakers and microphone opens.

Why did we actually go into this menu? Doesn't something work like that out of curiosity? Okay, let's continue to figure it out!

It’s worth stopping here and figuring out 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(speaker 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(speaker mode with a headset connected) – this mode is activated if you connect headphones or external speakers to your phone or tablet, and you turn on the speakerphone while talking on the phone;

Speech Enhancement(phone conversation mode) – this mode is activated in the normal mode of telephone conversations, and nothing is connected to it (headset, external speakers) and the speakerphone is not turned on.

Debug Info– it’s not clear why – information on backing up information or debugging it;

Speech Logger– I haven’t fully figured it out, most likely it was logging during negotiations or recording the 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 take the following form: Day of week_month_year__hour_minutes_seconds (for example, Friday_July_2016__time17_12_53.pcm).

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

Audio logger– used to record sound that supports quick search, playback and saving.

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

• Sip – settings for Internet calls;
• Mic – microphone sensitivity settings;
• Sph – earpiece speaker settings (the one we put on our ears);
• Sph2 – settings for the second speaker (I don’t have one on my phone);
• Sid – skip, if you change these parameters during negotiations on your smartphone or tablet, you can hear yourself instead of your interlocutor;
• Media – adjust the multimedia volume level;
• Ring – adjust the volume level of the incoming call;
• FMR – FM radio volume settings.

Under the settings selection item, 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.

Thus, 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 located 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.

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

Dear friends. The names of the items may differ on different models. This is an MTK platform, so be prepared to rack your brain and look for a match in your menu. I have a Jiayu G3 phone.

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

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

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

Initially secret codes mobile devices were intended for employees of the relevant service centers, reports lifter and Anonymous.

But in our digital world, no information can be kept secret!

Therefore, we have collected the most useful codes for Android devices:

Reset.

Open your phone and enter *#*#7780#*#*. Another way is to open the settings menu and select Reset settings.

Reinstalling the firmware.

You can reset all settings by reinstalling the firmware using the code *2767*3855#. You can also reflash your phone by connecting to a computer and installing new firmware.

Test mode.

This mode is used by testers and programmers. Enter *#*#*#*#197328640, then go to settings - a new testing menu will appear there.

Camera information.

If you want to find out what kind of camera is installed on your phone, dial *#*#34971539#*#*.

Backup media files.

Oddly enough, you can do backups media files using a special code. Just dial *#*#*273 283 255* 663 282*#*#*.

Google Talk Monitoring Service.

Yes, Google is spying on you. And if you dial *#*#8255#*#*, a monitoring service will open that will tell you exactly what information Google knows.

Battery charge.

Battery charge is displayed on the right top corner screen, but if you dial *#0228#, you can find out more.

Encryption information.

What encryption does your carrier use to protect your data? You will find out the answer to this question by dialing *#32489#.

Data usage statistics.

We all find it interesting to know how much data we use, because it often seems that the money is going to no one knows where. Check your operator: dial *# 3282 * 727 336*#.

3D capabilities.

This doesn't work on all devices, but you can check your 3D settings by dialing 3845 #*920#. This will tell you if your device supports displaying 3D modules.

Checking the WLAN network.

Check wireless settings local network very simple: dial 526#*#*#*#* or 528#*#*#*#*.

GPS check.

To check if your GPS settings are correct (because sometimes the Global Positioning System crashes), enter *#*#1575#*#*.

Checking Bluetooth.

Do you experience disconnected Bluetooth connections? Or has the connection become too slow? Check your Bluetooth settings and components by dialing *#*#232331#*#*.

Checking FTA SW (software).

If you want to know what software used by your device, dial *#*#1111#*#*.

Checking FTA HW (accessories).

And if you are interested in what hardware your software runs on, dial *#*#2222#*#*.

Diagnostic settings.

You can view diagnostic testing settings by dialing *#9090#.

Here is a complete list of codes for Android that are valid today:

*#*#4636#*#* Information about the phone, battery and usage statistics.

*#*#7780#*#* Reset settings. Uninstalling applications only.

*2767*3855# Complete reset, firmware reinstallation.

*#*#34971539#*#* Full information about the camera.

*#*#273283*255*663282*#*#* Fast backup of media files.

*#*#197328640#*#* Service activity testing mode.

*#*#232339#*#* / *#*#526#*#* Testing a wireless network.

*#*#232338#*#* Wi-Fi Mac address.

*#*#1472365#*#* Quick GPS test.

*#*#1575#*#* Various GPS tests.

*#*#0283#*#* Loopback test.

*#*#0*#*#* LCD display test.

*#*#0673#*#* / *#*#0289#*#* Audio test.

*#*#0842#*#* Vibration and backlight test.

*#*#2663#*#* Touchscreen version.

*#*#2664#*#* Touchscreen test.

*#*#0588#*#* Proximity sensor test.

*#*#3264#*#* RAM version.

*#*#232331#*#* Bluetooth test

*#*#7262626#*#* GSM signal test.

*#*#232337#*#* Bluetooth address.

*#*#8255#*#* Test Google service Talk.

*#*#1234#*#* Information about the firmware.

*#*#1111#*#* FTA software version.

*#*#2222#*#* FTA hardware version.

*#*#44336#*#* Build time.

*#*#8351#*#* / *#*#8350#*#* Enable/disable voice dialing registration mode.

Access to the engineering menu of your Android smartphone provides additional control options for the gadget.

Moreover, this real opportunity change "unchangeable settings", enable functions that are blocked but designed by the developer, and really improve (or ruin if ineptly interfered with) your gadget.

Engineering menu - what is it?

Engineering menu and hidden settings were present in the very first phones!

This gave and continues to give developers the opportunity to customize and test gadgets in the most unusual modes.

True, most are designed for smartphones and tablets based on the MediaTek processor.

Do not forget that if applications do not work correctly, you can create problems that are much greater than the problem of getting into the engineering menu, so be careful.

In addition, it is not a fact that the first application you choose will work correctly on your smartphone.

So you'll likely have to download and install several options before you find the one that works for you.

What parameters are available for configuration in the engineering menu

Of course, different smartphones may have different design schematics and menu functions.

Therefore, when you get to this function, you may find slightly different options and menu items on different phones.

Therefore, for example, a device on Qualcomm Snapdragon will have rather meager capabilities and everything will be limited to just viewing various parameters and their testing.

At the same time, smartphones based on MediaTek will have much wider capabilities.

However, remember that these settings are hidden by the developer for a reason.

When changing them, you must be aware of what you are doing, otherwise it may end badly for your gadget.

Important! Make it a rule to never change settings that you do not know the meaning of or are not sure how it will affect the operation of the device. Otherwise, you risk ruining your mood for a long time.

Information you can get from the menu

Basic data available on any type of smartphone:

Phone IMEI– personal identification (unique) number of the device.

Phone number– sometimes not specified;

Net– your operator;

Roaming– whether you are roaming;

Network information– whether you are being contacted and whether the network is turned on;

Call forwarding– is it currently in use?

Network type, network index;

Signal volume.

Your location coordinates.

There is also a section “about the battery”, it will contain the following data:

1 State– whether the battery is currently charging or not.

2 Charge level– in percentage charge/discharge ratio.

4 Battery Type- production technology

5 Time elapsed since last charge.

In addition to this information, the engineering menu may contain much more various useful data, depending on the type of menu provided by the developers.

Testing a smartphone using Engineering Mode capabilities

It often happens that despite all the correct visible settings, the phone does not function correctly.

The speed of the processes does not correspond to the stated parameters, the volume of used random access memory less than it should be, failures to operate or install valid applications, and lack of proper functionality are detected.

And the standard user menu does not provide any way to detect the cause of such problems.

The engineering menu just makes it possible to conduct in-depth testing of the system and the device itself for hidden malfunctions or incorrectly set parameters.

The following modes are available:

1 General (Automatic Test)– this test will test every parameter of the smartphone;

2 Report– a full test report is displayed;

3 Testing of all functional modules, processor, memory cards and SIM cards, vibration, speakers, microphone, connectors - literally everything the phone is loaded with can be checked for adequate operation.

4 Screen tests– parameters such as brightness, clarity, sensitivity, response speed, compliance with visualization and touchscreen;

5 Testing work gyroscope, cameras, accelerometer, flash, and much more.

This is what testing mode looks like.

To open it, you need to go to the appropriate section (most often “Testing” or something like that).

This is only a small fraction of what the engineering menu can provide for testing, and as you would expect, different phones will have various instruments for testing and items of tested objects will be different.

However, the benefits of such opportunities cannot be overestimated.

Such testing can help you understand whether changing settings will help solve a particular problem, or needed.

Or maybe the problem is at the level of a physical breakdown, and it makes sense, for example, to replace a part.

A similar test would also be useful when purchasing a used device.

Thus, you can immediately detect modules that are not working or have errors and understand whether the gadget is worth buying or not.

Let's look at examples of using the mode.

Adjusting the sound volume (Audio)

Thanks to the engineering menu, you can change the volume settings of the external speaker, earphone speaker, headphone output, and, not least, the microphone.

However, in this case, you should also be guided by a real need, for example, if you are told that you are hard to hear (due to loud noise in the microphone, or because no matter how much you turn up the volume, you can be heard quietly, others can be heard well , namely you quietly).

Then it makes sense to change the microphone settings.

Otherwise, if your microphone is working well, you risk ruining people's enjoyment of talking to you on the phone by changing the microphone setting, the effect of which you yourself cannot hear.

To adjust the sound, do this:

1 Enter the menu and select the tab Hardware Testing, then Audio. Select the desired mode. They are as follows:

• Normal Mode– sound mode of the main speaker of the phone (which is near the ear);
• Headset Mode– adjusting the headphone volume level;
• LoudSpeaker– the volume of the external speaker – the loudspeaker that is used during hands-free calling;
• Headset_LoudSpeaker Mode– this is the sound level in the mode when the headphones and loudspeaker are working simultaneously.

2 From the list of tabs, select the settings of which device you need. Again, there are these options:

This parameter is very difficult to configure, so it is better not to change it.

If configured incorrectly, the phone may begin to hear itself, which may result in noise, whistling or an unpleasant echo.

So you or your interlocutor will begin to hear yourself during a conversation.

• Line "Level" this is a parameter for the value of each step of the volume setting in standard menu. The ideal parameter is 0. It is better not to touch it, since this parameter is rarely knocked down or incorrectly configured.
• "Value is" and here is the parameter for each step of the volume of the external speaker (ring tone);
• Line "Max Vol", and there is a parameter that sets the upper sound threshold, that is, the maximum volume that can be set on the phone simply by adding the volume to maximum, for example, during a conversation.

Configuring cellular settings

In this case we will adjust the frequencies.

If you don't know what parameters cellular communication is used by your operator, changes in this window may result in loss of connection, so it is better to let the phone automatically select frequencies for communication.

However, unchecking unused frequencies gives a small bonus to energy savings.

At the same time, if your phone is intended for a different region and the manufacturer did not initially assign the frequencies you need, then this menu will help you enable them.

Attention! There have been precedents for criminal prosecution for unauthorized change IMEI numbers. Moreover, the punishment can be a fine, a suspended sentence, a criminal record, and in some cases even imprisonment.Vprison!

Android special codes

In addition to the engineering menu itself, there are also various secret codes that help manage the parameters of your phone.

Rice. 8. Special codes on Android OS

The ability to manage and change settings is a definite advantage.

But let’s not forget that it’s not for nothing that they are hidden and intended for those who know what they are doing.

It's not for nothing that we don't have access to the parameters of the laws of physics of our universe?

Who knows what would happen if we were able to change the force of gravity or the boiling point of water? This is alarming, isn't it?

Use power carefully.

Developers operating system from Google have provided special service codes Android. They are a special combination consisting of numbers from 0 to 9 and the symbols “*” and “#”. In some cases they are called engineering or secret. Using codes you can find out additional information about your mobile device and set advanced settings for many parameters. Combinations can also be used by developers to debug faults in case this is not possible in the usual way.

If you know the code, which, in fact, is the key to a particular setting, then simply enter it in the calling application, after which the information will instantly be displayed on the screen. Typically, secret codes are used to set individual settings by experienced users who are familiar with . Today, there are special applications that simplify working with service codes. You can find and install them in the standard way - through the Google Play store. But the easiest way is to find information about the service code and record it on a convenient medium so that at any necessary time you can use the combination to configure your gadget.

Service codes for setting individual settings for an Android phone or tablet

Compatibility of codes with different models of mobile devices

The Android operating system, which is installed on most mobile devices different manufacturers, may differ. For this reason, special sets of numbers and symbols will not always be compatible with your tablet model or mobile phone. To check whether the combination will work, you need to enter it into the application for making calls. If your smartphone or tablet does not react in any way to entering the code, it means that it is simply incompatible with your gadget model. It is very important to enter all symbols and numbers carefully, as any mistake may result in .

Popular devices from manufacturers HTC, Sony, Samsung, Asus support engineering codes. If you need to enter a combination on your tablet, you first need to install special application to make calls, which is possible. Before using secret codes, remember that this may lead to reset of settings, blocking of some parameters and partial loss of functionality. You need to take only those actions that you are confident in and remember each of them.

Secret combinations

The table shows the main service codes for Android devices.

There are ones that are suitable exclusively for gadgets from certain manufacturers. For example, the combination ##3424# opens diagnostic mode in HTC devices, *#0011# calls service menu on devices Samsung Galaxy S4. And using the combination **05***# you can unlock PUK on Sony mobile devices.

Application for using service codes

There is a way to make it easier to use engineering codes on your mobile device. You can download and install the Secret Codes application on Google Play. It is able to identify service combinations and present them in a table. Users have the opportunity to choose necessary set symbols and numbers, after which the code is instantly activated to set settings and view information.

The Secret Codes application does not always find a complete list of engineering combinations. First of all, it depends on the model and manufacturer of the mobile gadget. Sometimes the program offers an incomplete list of combinations. In any case, it is advisable to install it for all users who want to use service Android codes in the operation of your phone or tablet.

Service combinations on Android are used in situations where the problem cannot be solved in the usual way. We recommend that you first try to find open access. If this cannot be done, only in this case use service codes. In some situations, they are the ones who are able to revive a mobile device.