How to enter the engineering menu of an Android device. Engineering menu "Android": description, settings Battery: disable unused frequencies

In four years, Android has transformed from a small but ambitious project into perhaps the most complex and feature-packed mobile OS of our time. Android supports a huge number of technologies and functions, many of which are hidden from the user or hidden in places you wouldn't even think to look at. This article is a collection of tips and tricks that can be applied to any Android device without the need to root.

01. DISABLE THE AUTOMATIC CREATION OF ICONS ON THE DESKTOP

I think I’m not the only one who is annoyed by the way the market behaves when installing an application. For some reason he thinks that for any more or less software or the next game I definitely need an icon on the desktop, and he successfully creates it. And I have to delete it. And then another one. And so every time.

Fortunately, this behavior is easy to disable - just open Google settings Play (in the left panel) and uncheck the “Add icons” option. There you can also disable the forced password request every 30 minutes when purchasing applications, as well as the hated auto-update of applications.

02. DISABLE GOOGLE SEARCH AND OTHER USELESS SOFTWARE

The standard firmware of Android smartphones includes a huge amount of useless software, ranging from a bunch Google applications(do you know that Google requires manufacturing companies to include almost all the software it develops in the firmware of their devices?) and ending with all sorts of junk from the smartphone manufacturer. All of this (or at least most) can be disabled.

Go to “Settings → Applications → All”, tap on the desired software and click “Disable” (of course, you will be warned how “dangerous” this is). By the way, when disconnecting Google search Google Now will also disappear, as well as the search bar from the desktop (after a reboot), instead of which there will be an empty area.

03. RESET TO SAFE MODE

Few people know, but Android, like many other operating systems, has a so-called Safe mode. This is a mode in which the operating system boots with disabled third party applications. Malware that is not very skillfully written (one that is not registered in the system partition) then falls off, like any software that interferes with the normal operation of the system. Safe mode can be used to bypass screen blockers, applications that cause the smartphone to freeze, or, alternatively, to identify who is actually eating up the battery - the next firmware or software update.

The mode is turned on in a rather simple, but not at all obvious way: by holding down the power button and then holding your finger on the “Turn off power” item. After rebooting, the culprit of the problem can be removed through “Settings → Applications”.

04. GET RID OF INSTRUCTIVE NOTIFICATIONS

“The construction of the castle is finished!” - how did you get these notifications? Everyone who is not too lazy is trying to notify me about all possible and impossible events: “Vasya Dzhubga replied to you on Twitter,” “You have 100,500 new messages,” “You won surgery to enlarge your right leg.” You swipe away one notification, and three new ones appear in its place.

How to get rid of all this slag: hold your finger on the notification for a long time and uncheck the “Stop” button. This is the recipe for KitKat. In Lollipop, everything is a little different, but the essence is the same: hold down, then the i button, in the window that opens, put a checkmark on “Block”. There you can also force the notification to be a priority so that it is always at the very top.

05. DON'T FORGET ABOUT THE SERVICE MENU

Another not at all obvious function is the service menu. It can be opened by dialing *#*#4636#*#*. Basically there are different Technical information such as IMEI number, signal strength, current location or network type. But there is also a very useful function for some situations to force the smartphone to switch to desired type networks (2G, 3G, LTE).

In conditions of poor 3G/LTE signal levels, the device tends to reset to 2G in order to save battery power and ensure subscriber availability. This behavior can be disabled. Open the service menu and in the “Set up preferred network type” item, select WCDMA only or LTE only. In the same way, you can switch your smartphone to 2G - GSM only. It will help if you need to save battery power and the Internet is rarely used. By the way, you can also disable the radio module there altogether (until the next reboot, of course).

Smartphones based on Chinese MTK chips have their own and much more sophisticated service menu. His number is *#*#3646633#*#*. There is various system information and a huge number of tests, among which you can find several useful settings, such as adjusting the call volume or, for example, changing GPS/AGPS settings. The menu itself is terribly illogical and contains so much varied information that I don’t even dare to describe it, but simply send the reader to three letters - XDA.

06. USE A STANDARD BROWSER

I don't know why users don't like the built-in one so much Android browser. In my opinion, he is wonderful. Lightweight, fast, based on the Chromium engine, can synchronize with Google account(that is, it immediately includes all bookmarks and passwords from Chrome), but most importantly, it has a very convenient and almost ingenious navigation method. This is the so-called radial menu, which can be activated in the settings (only in Android 4.0–4.4).

07. MANAGE YOUR CONTACTS FROM YOUR COMPUTER

Google has web services not only for remotely installing software, blocking and searching for a smartphone, but also for managing contacts. All people's contacts ever saved and synchronized when connecting a new smartphone can always be found on the page google.com/contacts. They can be viewed, edited, added and deleted. Moreover, oddly enough, it is essentially part of Gmail.

08. MONITOR YOUR PROCESSOR LOAD

Android has a built-in function to show the current CPU load and active this moment processes on top of the screen. In theory, it is intended for application and firmware developers and is hidden from ordinary users, but no one is stopping us from activating it. But first you will have to reach the “For Developers” settings section, which by default does not exist at all.

Go to settings, then “About phone”, find the line “Build number” and tap on it seven times in a row. The message “You have become a developer!” should appear on the screen. This means that the “For Developers” item is now open, and we go to it. We rewind almost to the very bottom of the screen and in the “Monitoring” section we find the “Show CPU load” switch.

Turn it on and see a list in the upper right part of the screen. The first line is the so-called loadavg, which shows the number of processes that had to run or wait their turn to run in the last minute, five and ten minutes. To put it very roughly: if these values, divided by the number of processor cores, are above one, this means 100% processor load in the last minute, five or ten minutes, respectively. Below is a list of the most power-hungry processes (essentially, an analogue of the top command from Linux).

09. USE ADB TO BACKUP SOFTWARE ON YOUR COMPUTER

We have already written more than once about a wonderful tool called ADB, which can significantly simplify managing a device from a computer for a person who is familiar with the console (here we are mainly talking about Linux, of course). In addition to the ability to install software, transfer files to a smartphone, view logs and other useful things, ADB has recently made it possible to backup all smartphone settings and applications.

To use this functionality, install the universal ADB driver (goo.gl/AzZrjR), then download ADB itself (goo.gl/3P7klM), install the driver, then expand the archive with ADB, connect the smartphone to the computer with a USB cable, launch command line and execute the command

$ adb devices

If no devices are found, it means that ADB debugging mode is disabled on your smartphone. To enable it, go to “Settings → For Developers”, turn on the “USB Debugging” switch. Now we execute the previous command again and agree to the warning that appears on the smartphone screen. Now you can make a backup:

$ adb -apk -shared -f backup.ab

A message will appear on the smartphone screen asking you to specify the encryption password for the backup - you can safely press “Next”. The application backup process will begin, which will affect both the APK packages themselves (the -apk flag in the command) and their settings. All applications from the memory card will also be included in the backup. You can restore a backup using the following command:

$ adb restore backup.ab

10. DISABLE BACKGROUND DATA TRANSFER IN APPLICATIONS

Working in the background, applications can actively use the Internet for a variety of purposes, from updating their content to leaking information about your location. In addition, such activity in any case leads to increased battery consumption.

Android has the ability to selectively restrict applications from transferring data in the background, but it is located in a place where most users would hardly ever look. To prevent any application from using the Internet in the background, you need to go to settings, then “Data transfer”, scroll down the screen to the list of applications actively using the network (for some it will be a surprise that it is there at all) and tap on the desired software. At the bottom there will be an option “Limit background mode" It is worth keeping in mind that the option will disable data transfer only via mobile network, so data will continue to flow over Wi-Fi.

11. USE THE SEARCH BAR

Often, smartphone owners Android based neglected search bar at the top of the main screen. This is really logical, given the ability to search by typing a query into address bar any mobile browser.

Meanwhile, the desktop search bar does much more than just redirect your request to google.com. It allows you to search contacts, applications, calendar events, bookmarks and web browser history in automatic mode. For normal smartphone use, it may not be as useful, but when connecting an external keyboard, it is an indispensable tool. Just click and enter the name of the application, contact or anything else, and it immediately appears on the screen.

12. USE SMART LOCK

Smart Lock is one of those features that you don’t think about, but once you try it, you can’t live without it. This is one of the most notable new products Android Lollipop and one of the most useful features added to Android in Lately. The idea of Smart Lock is extremely simple - it disables the PIN code or other lock screen protection if there is a specific Bluetooth device or map location nearby.

By default, Smart Lock is “sort of” disabled. That is, it does not light up anywhere, but after pairing with a new Bluetooth device (of any type), it will definitely offer to add it to its white list. After this you will forget about her again. But only until you enable lock screen protection in the “Security” section of the settings. Now it will work as it should.

The Smart Lock settings themselves are in the same section, and, in addition to adding new Bluetooth devices, you can specify “safe places” there, along with a list of options based on Google Now “observations.” By the way, if you disable it, as described in the first tip, then this functionality will also be lost.

13. SAVE ENERGY RIGHT

Another notable innovation from Lollipop is its power saving mode. It migrated to standard Android from the firmware of smartphone manufacturers, who previously sold it independently. Now the function is in pure Android- you use your smartphone to the fullest, and when the battery charge reaches 15%, the system suggests turning on the power saving mode, which turns off background transmission data, reduces brightness to a minimum, disables some sensors and reduces screen rendering FPS to a couple of tens of frames per second. For clarity, the status bar and on-screen buttons at the bottom of the screen turn red - so you don’t forget.

To save battery life on a smartphone with an AMOLED screen, you can set black wallpapers and use apps with black backgrounds.

The energy saving mode is customizable. Go to “Settings → Battery → menu → Power saving mode.” Here you can specify a condition automatic switching on mode (though the choice is meager: 5%, 15% or never) and, most importantly, turn on the mode right now. Very convenient if you have a long trip ahead without the possibility of recharging.

14. MONITOR TRAFFIC

Most likely, smartphone manufacturers, as usual, will shovel the standard Android 5.0 interface and change everything (hello Samsung - the biggest fan of breaking interfaces), but in the standard Lollipop curtain, or rather, in the “second curtain” with
flasks quick settings There is one highlight. The data transfer button in the center does not switch data transfer at all, but expands into an interface that allows you not only to view the current traffic consumption, but also to disable data transfer using the switch on top.

15. SHARE NOT YOUR PHONE, BUT THE APPLICATION

Especially for those who like to give their phone to other people, Lollipop has a Screen pinning feature that allows you to lock your smartphone on one application without the ability to close it or switch to another. Like many other useful features, it is completely invisible and hidden quite deep in the settings. To activate, go to “Settings → Security”, scroll almost to the very end and turn on the “Block in application” option.

Now if you click the view button running applications(“Browse”), an pushbutton will appear at the bottom of the current application’s thumbnail. Once you tap the icon, the screen will be locked on the selected app and you will need to hold the Back and Overview buttons simultaneously to go back. In this case, you will have to enter a PIN code if it is set for the lock screen.

XX. USE ACITIVITY LAUNCHER

Any graphic Android application includes one or more so-called “activities”. Each of them is an application window (screen), for example the main screen or the settings screen, maybe even a file selection window. By default, you can open directly (from the desktop) only those activities that the application developer marks as main; the rest are accessible only through the application itself and only if the developer himself allows this.

However, having the right tool at hand, you can reach any other activity of any application and even create a shortcut for it on the desktop. Activity Launcher does just that. Just install the application, select “All actions” in the menu at the top and find the software you need. All of her activities will appear on the screen, and any of them can be opened with a simple tap or placed on the desktop by holding your finger for a long time.

An example of useful “internal” activities is the Chrome bookmarks window (Chrome →Bookmark), access to the hidden AppOps mechanism in Android< 4.4.2 (Настройки → AppOps), запуск поиска в TuneIn Radio (tunein.ui.activities.TuneInSearchActivity). Очень много активностей имеет в себе ES Проводник, включая редактор, music player, image viewer and much more. Any of them can be launched directly from the desktop. In the same way, you can open any section of the settings and gain access to some OS functions that are difficult to reach. This is completely legal functionality and does not require root.

Android has big set hotkeys for connected keyboards. You can use Arrow, Tab, and Enter to navigate the desktop and various menus. In addition, the following key combinations are available:

Esc - “Back” button;
Win + Esc - Home button;
Ctrl + Esc - “Menu” button;
Alt + Tab - switch between applications;
Ctrl + Space - switch layout;
Ctrl + P - open settings;
Ctrl + M - control installed applications;
Ctrl + W - change wallpaper;
Win + E - write a letter;
Win + P - music player;
Win + A - calculator;
Win + S - write SMS;
Win + L - calendar;
Win + C - contacts;
Win + B - browser;
Win + M - google maps;
Win + Space - search;
To find out your MAC and IP address, go to “Settings → Wi-Fi → menu → Advanced
new functions". MAC and IP will be at the very bottom.

Lollipop has a built-in Flappy Bird style game. Go to “Settings → About phone”,
Tap on the “Android Version” item several times, then hold your finger on the “Lollipop” that appears. Let's play.

Google Now supports a large number of Russian-language voice commands. All of them can be divided into two groups: voice search and the voice commands themselves. Voice search allows you to perform an intelligent search on Google, when the system displays a specific answer on the screen instead of a list of links, and voice commands allow you to perform certain actions, for example, send an SMS or set an alarm. The list of commands is shown in the Google Now Voice Commands image. Voice search includes more than a dozen various types questions:
Weather. What will the weather be like tomorrow morning?
Addresses. Where is the nearest pharmacy?
Flight information. When does Aeroflot flight number 2336 depart?
Time. What time is it in London?
Events. When is sunset today?
Computing. What is the square root of 2209?
Translation. How do you say "cucumber" in Spanish?
Sport. When does Spartak play?
Finance. What is the S&P 500 index today?
Data. What is the height of the tallest building in the world?
Exchange Rates. Convert 2600 rupees to US dollars.
Images. Show photos of the Golden Gate Bridge.
Interestingly, Google Now understands a large number of much less obvious questions in English. As an example we can give:
Should I wear a jacket today?
How much tip for 420 rubles?
Where is my parcel?

This, of course, is not all that could be talked about, but it will not be possible to lengthen the article, and many of the other possibilities are already known. Don't forget about these tricks, and your smartphone will become
a little more convenient.

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

Our smartphones carry a lot of secrets that are hidden by manufacturers. Do you know anything about the engineering menu on Android? Have you heard about secret codes? Since they opened our article, it means they heard something remotely. All these tools appeared at the birth of the first mobile phones, but, as is natural, over the years they became more functional and understandable.

However, it is worth noting right away that the manufacturers’ plans do not include making the engineering menu or secret codes for (as the name implies) available to everyone. And this makes sense. Let's go in order.

What is the Android engineering menu, secret codes?

So, Engineering Mode (engineering menu) - special application, which is installed on almost any smartphone. Used by the manufacturer to conduct various tests and optimize the operation of functions, sensors and other parameters of a phone or tablet.

By default, it is hidden in the system so that every user cannot access it. Called, as a rule, using a small code entered using a standard dialer. Thanks to its extensive capabilities, the engineering menu can be accessed and managed using third-party applications.

Why is the engineering menu hidden? If you use the application's capabilities carelessly, you can damage your smartphone or other device. As noted above, the engineering menu is intended for manufacturers (developers, for conducting tests). Therefore, you should be careful when making any changes here.

Secret codes for Android (service, engineering) are somewhat different from the menu considered. If the engineering menu gives access to many parameters at once, then one entered service code leads to only one, as a rule, function. There are a lot of codes.

Moreover, there are both universal ones (work on most Android smartphones, even mobile phones), and codes for specific models devices. We'll look at the most popular ones a little later.

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

Android engineering menu - the most popular code

There are two popular ways: through a secret code or using special software. Naturally, the first method is simpler and more reliable, but not without nuances. There is no universal code that will definitely take you to the engineering menu.

On one smartphone one triggers, on another – another, on a third – a third. However, Android is not the first year, so users have developed the most popular codes that work on most devices. So:

*#*#3646633#*#* – the most common entry code into the Android engineering menu;
*#15963#* and *#*#4636#*#* – if the previous one did not work, try these;
*#*#7378423#*#* or *#*#3646633#*#*or *#*#3649547#*#* – used on smartphones from Sony;
*#*#3424#*#* or *#*#8255#*#* – we draw the attention of owners of HTC devices;
*#*#197328640#*#* – in some cases it works on Samsung;
3845#*855# – often used to access the engineering menu on LG Android smartphones;
*#*#54298#*#* – works on many devices with a MediaTek processor;
*#*#2846579#*#* or *#*#14789632#*#* – and Huawei has its own set of codes.

By at least, at least one, but it should work on your device. Simply enter the code using the dialer (Phone application on the desktop). As a rule, you don’t even need to press the call button (not always) - when you finish dialing, the service will automatically start. But not everything is so simple; there are certain difficulties in launching the engineering menu on some Android phones.

I can’t enter the Android engineering menu: reasons

Firstly, many smartphones or tablets with Qualcomm Snapdragon, Intel or Tegra processors either do not have a menu or are very difficult to access. In some cases, you don't even have to try.
secondly, custom firmware may be the cause of the problems. In a number of them, access to configuration tools is simply absent or blocked. For example, you will not find the engineering menu in firmware CyanogenMod, which is very popular among users. The reason is simple - the firmware was originally developed for Snapdragon-based devices.
thirdly, the source of the problems may be the manufacturer himself, who hid the engineering menu more reliably or decided to remove it altogether. This also includes various types of errors from which none of the devices are insured.

Actually, solutions to problems lie on the surface. If the smartphone is powered by Snapdragon, Intel or Tegra, then in most cases nothing can be done. However, even on these devices you can access a number of hidden settings, which we will talk about below.

By the way, on Xiaomi smartphones, which are mostly based on chips from Qualcomm, you can access the engineering data by clicking several times on “Kernel version” in the smartphone settings (section “About phone”). Finally, in some cases, flashing your Android device to stock (official) firmware will help.

The second way to open access to the engineering menu is through applications. There are quite a few of them, you can download them for free from, but almost all of them are designed for smartphones based on the MediaTek processor.

Again, it is not a fact that each of the programs will work smoothly on your device - there are a hundred reasons why they will refuse to function. These tools are developed by small companies, so you'll probably have to try a few.

What can be configured in the engineering menu?

How appearance interface and the set of settings for settings may differ for different smartphones. If you take a Qualcomm Snapdragon device, then often all you can do is look at information about the various modules and perform some tests.

You will not be able to make any changes to the parameters. But MediaTek smartphones offer much more options: sound configuration, network settings, various modules, and so on.

So, regardless of the fact that the external interface of the engineering menu may differ by different devices, it won’t be difficult to figure out the points. Let's go through the main features.

Once again, you make changes at your own risk. Don't change the values of parameters you don't know anything about.

Informative features of the Android engineering menu

The first thing the Android engineering menu offers is to study various information about the device. It mainly concerns the network, wireless interfaces and battery (on smartphones with Snapdragon processors using the command *#*#4636#*#*). What can you see in these sections:

Phone IMEI is a special (unique) number that is assigned to each smartphone;
Phone number – not always indicated;
Network – the current operator is indicated;
Roaming – whether you are there or not;
Information about the network - whether it is being serviced or not, enabled or disabled;
Call forwarding – whether used or not;
Network type, network index;
Signal volume and your location in the form of coordinates.

In the "About the battery" section:

Status: charging or not;
Charge level (in percent);
Voltage and temperature;
The technology used to produce the element;
Time since last reboot.

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

Testing smartphone parameters in the engineering menu

Quite an interesting feature of the engineering menu, which allows you to test various parameters of the smartphone. It often helps to find the source of the problem that is causing the system to not function properly. What specific tests can be performed:

Comprehensive (Automatic Test) – every parameter of the smartphone is tested;
Report – provides a test report;
Testing buttons, memory cards and SIM cards, vibration, speakers, connectors - all this can be checked for functionality;
Screen tests - for brightness, sensitivity, etc.;
Testing cameras and flash, flashlight, wireless interfaces and sensors (gyroscope, accelerometer and others).

Again, the range of testing options may vary. It all depends on the engineering menu of a particular Android device. Undoubtedly useful features, which will be useful to many users. For example, when purchasing a used smartphone, you can test the screen for functionality.

Changing settings in the Android hidden menu

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

It’s better not to touch parameters at all, the purpose of which you don’t know, and also take screenshots or mark on a piece of paper everything that you change. If problems arise, you can return the options to their default values. Let's look at the most interesting sections here.

Setting up cellular communications (Telephony) and changing IMEI

Android engineering menu - frequencies

Settings for changing network parameters are concentrated here. You are unlikely to be able to disable your smartphone by changing these parameters, but the network search can be disrupted, so remember where you take pictures and where you put the checkmarks, so that in the future, if anything happens, you can return everything to its place.

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

Firstly, you can deselect frequencies (subsection Band Mode) on which your operator does not work. Let's find out what ranges yours operates in mobile operator, uncheck all the others. This will help reduce energy consumption a little, since it will know exactly which frequencies to connect to.

In the same subsection, on the contrary, you can turn on the desired frequencies. This is needed when the manufacturer from the factory does not activate the necessary ones for your region. For example, often “out of the box” Chinese smartphones cannot work in Russia with LTE. The service menu on Android will help solve this problem.

Secondly, in subsection Network Selecting we can set the priority of the networks that are used for access (2G, 3G, 4G). Everything is done for the same purpose: increasing time battery life from the battery. As a rule, 3G and/or 4G networks are turned off. Not every region has support for these networks, and the communication module, be that as it may, continues to search for them, consuming energy. Turned it off and no problem. In addition, the device will not switch to 3G or 4G, wasting traffic.

To subsection GPRS, us, ordinary users It's better not to climb unless there is a good reason to do so. Here you can find various settings for how your smartphone works with the network, and there is also an option for changing IMEI.

Attention! There were precedents for criminal prosecution for illegal shifting IMEI numbers. More often the punishment is a fine or a suspended sentence. However, there were cases of actual imprisonment.

The IMEI change function can be useful after an unsuccessful firmware attempt, when the identification number “flies off”. Then you can simply copy it from the box the device came in.

Connectivity

Here, as in the case of GPRS, most people have nothing to do. The section itself is intended for making changes to the settings of Wi-Fi and Bluetooth modules. In this section you won’t be able to configure anything to make your smartphone work better, but you can easily harm your electronic friend.

Therefore, here we use only testing functions, and if it is necessary to make some corrections to return the device to a working state, we carefully study the purpose of each parameter on the Network.

Setting the sound volume in the Android engineering menu (Audio)

Android engineering menu - volume adjustment

Judging by the number of queries in the search, it is in order to increase the volume that Android users resort to the engineering menu. It's quite simple:

Select the Hardware Testing -> Audio tab. Select the desired mode;

Normal Mode – is responsible for outputting sound to the main speaker.
Headset Mode – it is used to adjust the sound volume in the headphones.
LoudSpeaker – includes settings for adjusting sound parameters during speakerphone calls.
Headset_LoudSpeaker Mode – allows you to increase or decrease the sound volume for speakerphone mode with connected headphones.

Now from the drop-down list we select for which device we will adjust the volume in the Android engineering menu;

Sip – options for Internet telephony. Mic – sets the microphone sensitivity. Sph (maybe two) – setting the earpiece speaker. Media – multimedia speaker (main). Finally, an item that is best left untouched is Sid. After changes, an echo may appear.

The “Level” line specifies the volume level value, which is associated with each step (click) of the volume rocker. The default is 0. You can leave it alone, unless, of course, the sound on your device jumps sharply when you press a button.
The “Value is” line specifies the value of each step (volume level);
The most interesting line is “Max Vol”, with which the maximum volume on Android is increased through the engineering menu.

As a rule, the smartphone manufacturer does not set the maximum value, so we can correct it ourselves. Please note that at the highest level the speaker wheezes. To choose the most comfortable value, we go through the options.

Secret codes for Android

In addition to the engineering menu, you can use the secret codes. Here it is also difficult to predict which of the commands will work on your device. Let's look at the most popular and useful:

*#06#	Getting the IMEI of the smartphone
##232338##	Find out the MAC address and Wi-Fi information
##232337##	Will show Bluetooth address
##3264##	Displays information about RAM
##1234## ,	Let's learn everything about the software part
##2663##	View screen sensor data
*#34971539#	Displays information about installed camera sensors
#0#	Is used for complex test smartphone
##0##*	Useful for testing screen
##2664##	Runs a display sensor test
##0842##	Performs a vibration test
##0289##	Useful for sound testing
##1575##	Starts testing GPS module
##7262626##	Used to check mobile communications
##7780##	Resetting your smartphone - completely or partially
#*5376#	Erases all SMS from your smartphone
#*3851#	Useful for rebooting the device
*#2263#	Setting up network ranges
##273283255663282##*	Calls backup files

Majority Android devices have hidden functions, which include engineering Xiaomi menu, and any other phone. It is hidden primarily from inexperienced users so that they do not mess things up.

Why do you need an engineering menu?

The engineering menu is used by developers to final configure the device. Here you can check the operation of all sensors and test the main components. There are about 25 different types of tests in total.

How to open the engineering menu on Xiaomi smartphones?

There are 2 ways to enter the Xiaomi engineering menu:

Method number 1 - through dialing

This method works for everyone Xiaomi smartphones Mi and Redmi lines - you need to enter in dialing mode: *#*#6484#*#*. If this code doesn't work, try it *#*#4636#*#* .

Method number 2 - through settings

The algorithm of actions is simple:

Open " Settings» smartphone
Go to the menu " About the phone«
We find the item “ Kernel version" and quickly click on it 5 times

It is worth noting that depending on the model of your smartphone, the engineering menu may differ.

This is what the engineering menu looks like on Xiaomi Mi 8 Lite:

In this case, the menu has 32 items (their number may also differ depending on the smartphone model):

Check version info— information about the version. Here you can see the IMEI and serial number;
SIM card- shows SIM cards installed on a smartphone;
Support TFCard— information about a third-party SD drive;
touch sensor— touchscreen test;
Display— display test;
Receiver— standard speaker test;
speaker— conversational speaker test;
Light sensor— light sensor test;
Proximity sensor— proximity sensor test;
OTG— testing external USB;
Charger test— charging check (you need to connect the charger);
Battery indicator— displays the charge level and temperature of the battery;
Read camera— rear camera;
Rear sub camera— rear auxiliary camera;
Rear dual camera— rear dual camera;
Front camera- front-camera;
FPC fingerprint sensor— checking the fingerprint sensor;
Keyboard test— checking the “volume up”, “volume down” and “lock” keys;
Vibrator test— vibration test;
Notification light (LED)— flashlight and display brightness test;
Main MIC— test of the main microphone;
Top MIC— test test of the top microphone;
Headset test- headphone test;
Wi-Fi AP Scan— scanning Wi-Fi networks;
Wi-Fi Address- address Wi-Fi networks, to which the smartphone is connected;
Bluetooth scan— search for bluetooth devices;
Get Bluetooth address— bluetooth address of your device;
Accelerometer— checking the acceleration sensor;
Gyroscope— checking the gyroscope;
Magnetic sensor— magnetic sensor test;
GPS— checking the GPS sensor;
SAR Sensor— level of electromagnetic radiation.

And here's what it looked like on the old one Xiaomi Redmi 3s:

The menu consists of five items:

Automatic Test. All parameters will be tested automatically.
Single Item Test. Here you can run any of the tests separately.
Test Report. Here you can view the test results.
SW add HW version. Find out the version of your smartphone.
Device View. All information about the device's hardware.

If everything is clear with points 1,3,4,5, then the second one needs to be discussed separately, since it includes a bunch of tests.

Key– checking the functionality of physical buttons
Blacklight– testing the display for brightness
TouchPanel– sensor testing
TFlash– checking the memory card
Bluetooth– searches for all available devices
SIM Card– checking the availability of SIM cards
Vibration– vibration test
Loopback– tests the conversational microphone for recording and playback
LCD– display colors
GPS– search for satellites
Gyro– gyroscope operation
G-sensor- speed sensor
Proximity Sensor– responsible for fading the screen during a conversation
Optical Sensor– optical sensor
Magnetic Sensor– magnetic sensor
RTC– built-in clock
Speaker– checking the speaker
Receiver– checking the standard speaker
Headset– test the headphone jack, headsets and sound playback
LED– notification indicator
FM– checking the radio operation
Camera– testing the camera and flash
Battery– battery and charging operation
WiFi– looking for access points
Torch– checking the flashlight

As you can see, using the engineering menu on Xiaomi you can get a lot of information. An experienced user will be able to use it to roll back the smartphone to standard (factory) settings, test the operation of all sensors, find out more detailed information about the device, optimize battery consumption and much more.

Not many people know about the existence of the OS Android menu with advanced device settings - engineering menu . And someone knows, but doesn’t 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 capabilities.

You can enter the engineering menu simply by entering a special command (but we must add that this method doesn't work for everyone Android versions and not on all devices)

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 should open. But on some devices you will still need to press the "Call" key

If this method does not have any effect, you can use an alternative!

And it consists of 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 dialing a combination*#*#3646633#*#*)

There are a lot of settings there! There is huge scope for experimentation! Almost EVERYTHING can be debugged and adjusted!

For clarity, let’s briefly look at setting the device’s volume level:

Go to the program ---> select the "Engineer Mode" section

Because We are interested in adjusting the sound level, select ---> "Audio"

And voila, the menu we are interested in 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 general level is not available for regulation, then enter another submenu, for example, Audio - Normal - Media - there will be an opportunity to adjust the general volume level.

Sub-items:
Sph - volume levels during telephone conversations,
Mic - microphone sensitivity levels,
Ring - ringer volume,
Media - volume when playing music, movies, and games.

Ring volume levels are set in Audio - LoudSpeaker - Ring
Max Vol = 150
Levels: 120 130 145 160 180 200 (starts to wheeze more)

Phone speaker conversation volume levels in Audio - Normal - Sph
Max Vol = 150
Levels: 100 120 130 135 140 145 150

Microphone conversation 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:

Speakerphone 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 wheezing starts)

Now all volumes are adjusted within adequate ranges.
If you are not satisfied with the volume levels, you can set your values (the higher the value, the greater the volume when adjusting with the volume keys, or the greater the sensitivity of the microphone)

By analogy, you can configure most sections! Experiment!

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

Where to find the engineering menu on Samsung Galaxy

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

You can enter the engineering menu using a special combination (USSD code), which is written in the dial panel. However, these commands may differ in different phone models:

in Samsung J7 and J1 the actual combination is *#*#0011#;
for Samsung Galaxy A5, Galaxy S5, Galaxy S6, the dial *#*#8255#*#* or *#*#197328640#*#* is suitable;
on Samsung Galaxy A3 the code is *#*#9646633#*#*;
for Samsung Galaxy S3 – *#*#0#*#*;
in Samsung Galaxy S7 Edge – *#*#8255#*#* or *#*#4636#*#*.

On other devices from the Galaxy line, you can use the service combinations *#*#4636#*#*, *#*#8255#*#* or *#*#3646633#*#*.

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

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

Main features of the engineering menu on Samsung Galaxy

Having figured out how to enter the engineering menu on Samsung, let's look at its main features. Full Engineering Mode for MTK chips equipped big amount tools with which you can perform a complete diagnosis and fine-tune your Samsung in many respects.

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

On the Samsung Galaxy A5 and Galaxy S6, the main sections of the engineering menu are:

Telephony;
Wireless interfaces (Connectivity);
Testing mode (Hardware Testing).

In the Telephony tab, the user has the opportunity to:

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

The most popular tab in the engineering menu is Hardware Testing. This is where you can test the performance of the processor, battery, speakers, camera, display and GPS module. This area allows you to perform a complete diagnosis of Samsung during its purchase and identify possible malfunction products.