System codes for Android 5.1. Android engineering menu - how to get super supervision in the world of smartphones

The most popular of the current existing operating systems is definitely android. Under its control, most modern devices and various gadgets work. If earlier we could see it only on smartphones, now it is used everywhere. It is difficult to submit a modern TV running a different system. All this happens for one simple reason. This system is very functional and has many settings. But, despite its prevalence and ease of use, many do not even know what the android devices store secrets.

Among the many common features that the average user uses every day, there is also a reliably hidden functionality. A person can use his smartphone for several years and not even imagine all the features of his gadget.

It's time to reveal all the secrets and tell about the hidden "chips" of the popular operating system. In this article we will try to open all the secrets of Android.

Reliable-hidden mini game

On each device, regardless of the Android version, there is a hidden mini game. In different versions, android it is different, but they are all exciting and quite complicated. Independently guess where this game is almost impossible. It is so well hidden that a not-excluded person cannot launch it by chance. We describe the universal launch algorithm hidden game.

First we go into the basic settings of the device. At the bottom of the list, the list will have an inconspicuous and rarely used clause "On the phone". It is he who needs it. Click on it and go on. Now there will be a huge amount of information on the display screen. We will see the name of your gadget, the number of RAM, the version of the kernel and a lot more. But we need a string with the inscription "Android version".

After we found it, a multiple fast pressing on this line open a mini game. Press this inscription you need many times and with short intervals. The exact number of clicks are difficult to say, but it can be assumed that you have to be taped on the screen from five to ten times.

Of course, more advanced games with modern graphics can be installed on Android, but it's always nice to find something new in a long familiar thing.

Safe mode

Modern mobile phones in their functionality are practically equal to personal computers. It is difficult to even say what they are inferior. They have their own safe loading mode, which is not known.

This mode will be especially useful if a serious failure occurred in the system and the device finally depended. This feature will also be extremely useful for smartphones infected with a large number of viral programs that provoked disorders.

By downloading in this mode, the device blocks absolutely all third-party applications. In other words, the phone will start only with the factory list of programs. After that, you can remove malicious software or incompatible applications that braked the device.

In order to accomplish this action, you must click on the off key. After the shutdown button appears on the screen, click it and do not let go for a long time. Then confirm the reboot in the selected mode.

After rebooting, all previously installed applications will be painted in black and white. Thus, they are easily distinguished from system programs and subsequently removed.

Hidden Menu

When entering the main menu, we see the main list of tabs that use to configure your device. In fact, this is not a complete list of settings. The Android system has a hidden menu item that is intended exclusively for advanced users.

You can activate this item by clicking on the main phone settings. After that, scroll through the open page at the bottom. We will see the point called "About Phone". It is he who needs it. Go to it using one click. Among the numerous lines are looking for the inscription "Assembly". Click on it without stop until the display does not appear with the text "You Developer".

After that, you can congratulate you, the secret menu item is activated. To go to it, open the main menu and go over the "Advanced" tab. Now they strol down the page to the end and on one of the last positions will be the inscription "for developers". This is the most menu that was not available before and was not even displayed.
This tab is in itself a lot of new features:

1. You can see processes statistics. In fact, this information is provided in order to analyze the application time of the applications. If one of the applications is running continuously and is not systemic, it is a big reason to think about it to delete or stop this process.

2. Debugging by USB. This item is especially important for experienced users who are engaged in the firmware of the devices and the development of android applications.

3. You can limit the maximum number of background processes.

4. Ability to display the processor load.

5. Change the scale of animation, select the boundaries of objects and much more.

We will not now list all the items of this menu, their very large amount. Each can independently activate this option and familiarize yourself with all the capabilities of its device.

Lupa

On this secrets android does not end, but rather just begin. Another fairly useful feature is the ability to increase the screen or as it is also called - on-screen magnifier. This opportunity very much disrupts people with violation. Especially relevant this feature becomes for those who have a small diagonal of the screen.
Intensify such a function will not be any difficulty. As in most cases, we go into the gadget settings and go to the "Special Features" item. In this tab, among numerous settings, it is necessary to find "gestures to increase." We activate this opportunity and now we can increase any section of the display triple touching the finger.

Increase in the integrated memory

Until recently, the volume of the internal memory of the phone was catastrophically small. Smartphones with a memory of more than eight gigabytes were considered flagship. Much time has passed since then, but even now on some models, the volume of the built-in memory is not great. If they still take away the place that the system occupies, the user remains almost nothing. At the same time, the inserted flash drive does not save the situation, since it is impossible to install games and programs.

Starting from the sixth Androyd, such a problem disappeared. This version of the operating system implements a very convenient function. Now if you insert a flash drive into your device, the operating system will immediately task the user about the purpose of this flash drive. It is enough to choose the item that we want to use it as internal memory. After that, your gadget independently format the drive and will recognize it as the internal memory of the device. This will make it easily installing all kinds of games and programs on it.

Using this privilege, it is necessary to remember that all flash cards have different data transfer speeds. Now it is best to use the tenth-class drives. Otherwise, the installed content will slowly open and incorrectly work.

Screen screenshot Android device

In the process of using the phone, it is often necessary to save the screen image. There can be a lot of reasons for this: catch the foot frame of the film, fix the error that appears on the screen, save the fragment of its correspondence, etc. The reasons for each user are different.

To save the display image, it is enough to press the volume button down and the shutdown key of the gadget. After that, the snapshot will automatically be saved in the smartphone gallery.

Secret codes

As mentioned earlier, the Android system has a huge number of settings and a lot of opportunities to stabilize the shell. But for many users it will be a real discovery that you can manage the device not only with the standard settings menu, but also using the set of a secret combination of characters.

Of the most useful combinations you can allocate:

* # * # 0 * # * # * - allows you to test the display;

* # 06 # - using the specified command you can find out the unique IMEI of your gadget;

* # * # 4636 # * # * - With the help of this combination, you can find out a variety of data on the smartphone and its battery.

Device blocking in case of stealing

Smartphones and other devices running the operating system Android often become the desired object for the kidnappers. What to do if the smartphone is stolen, and it is stored a huge number of personal data that should not get into other people's hands?

There is one proven way to help securely secure your personal information. To do this, go to the basic settings, then open the Safety tab. Among the proposed options, we need to press "device administrators". Activate the "Remote Search and Lock" feature. Now our data is under reliable protection. With your personal google account, you can block the phone, regardless of where it is.

This feature will also be very relevant in the event of a loss of its gadget. In addition to blocking the device, all of its data can be restored on your computer.

Traffic control

All mobile operators have their own traffic limits and tariffs. In most cases, the user has a limited number of Internet traffic per month. To track the amount of megabyte spent, you can refer to the communication operator or set one of the numerous third-party applications. But if you closely familiarize yourself with the capabilities of your smartphone, you can see that there is a regular function in the settings. It allows you to be aware of Istracted megabytes.

To set the limit limit, you need to go to the basic settings, after which go to the "Data Transfer" tab. It is there that you can set the number of megabytes that we plan to spend. After the user exceeds the specified threshold, the device will immediately inform about it. In addition, using this feature you can track which application most consumes Internet resources. It is very convenient and saves on GPRS traffic.

Other secrets

Above the most interesting secrets of Android were listed. These features are standard and are present on each device. In addition to common secrets, there is a large number of individual phones from each manufacturer and in each version of android. The fact is that each manufacturer uses his unique android envelope. At the same time, all shells differ among themselves and have various advantages. Each particular phone manufacturer has its own unique "chips." For example on ZTE Nubia smartphones, repeatedly pressing on an empty display area produces the effect of a broken screen. No useful functionality in this, but it looks very funny.

Summing up, I would like to note that with the advent of new versions of the operating system, the number of functions and secrets android increases. It is possible that this list will soon be replenished with new interesting features.

Not many know about the existence of the Android OS with advanced apparatus settings - engineering menu . And someone knows, but not vkurse how to go to it and what to do with it.
In this article we will show ways to enter the engineering menu and some of its capabilities.

Log in In the engineering menu, you can simply speaking a special command (but it is necessary to add that this method does not work on all versions of Android and not on all devices)

Team to enter the engineering menu: *#*#3646633#*#*

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

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

If this method did not occur, you can use alternative!

And it consists of installing a program (which by the way in free access is on Google Play) " Mobileuncle MTK Tools.2.4.0"

This program will open access to the engineering menu (Ie will work like a set of combination*#*#3646633#*#*)

Settings there is a great set! Scrost for experiments is huge! To debug and adjust you can almost everything!

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

We go into the program ---\u003e Select the section "Engineer Mode"

Because For us, it is interesting to set the sound level to choose ---\u003e "Audio"

And voila, the menu you are interested in.

MAX Vol - one for the entire subsection, as a rule, is made 150 (it is possible to change 0-160 - it changes if you choose the MEDIA point in the subsection).

If in some submenu, for example, AUDIO - NORMAL - SPH, the overall level is not available to regulation, then enter another subsection, for example, Audio - Normal - Media - there will be the ability to adjust the overall volume level.

Subclauses:
Sph - volume levels when telephone conversation,
MIC - microphone sensitivity levels,
Ring - Call Volume,
Media is a volume when playing music, movies, games.

Call volume levels are set in Audio - Loudspeaker - Ring
Max Vol \u003d 150
Levels: 120 130 145 160 180 200 (more starts wheezing)

Volume Volume Volume in the telephone dynamics in Audio - Normal - Sph
Max Vol \u003d 150
Levels: 100 120 130 135 140 145 150

Talk levels in the microphone in Audio - Normal - MIC
Levels: 100 172 172 172 172 172 172

Multimedia 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 for the mode, by analogy:

Volume Volume Talking Through Robes Sets in Audio - Loudspeaker - Sph
Max vol \u003d 150 (it is one for all partition)
Levels: 80 100 110 120 130 140 150 (more starts wheezing)

Now all volume is adjustable in adequate bands.
If you are not satisfied with the volume levels - you can set your values \u200b\u200b(the greater the value, the greater the volume when adjusting the volume keys, or more microphone sensitivity)

By analogy, you can configure most of the sections! Experiment!

Manufacturers of smartphones on Android for testing devices are introduced and use the engineering menu. It contains all kinds of tests and settings of the device inaccessible to ordinary users. However, today, knowing the USSD command or downloading the application from PlayMarket, anyone can enter the engineering menu.

Why need a hidden engineering menu in android

Engineering Mode is essentially a hidden application that uses developers for testing and installing optimal mobile phone or tablet parameters. Specialists check the operation of the sensors and, if necessary, make adjustments to the functioning of system components.

Working with the Android technical menu, be careful - the change in the part of the functions leads to failures in the device.

How to enter the menu

To open the menu installed by the manufacturer, activate the number dialing panel on the smartphone and enter one of the USSD commands presented in the table. After entering the command, the numbers will disappear from the screen, and the menu will open instead.

Table: Combinations for running Engineering Mode

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

Video: How to work in Engineer Mode

If the code does not work, and the standard way to start the service menu is not detected, use third-party applications - you can download them on PlayMarket. Recommended programs - "Running the MTK engineering menu", MobileUncle Tools, Shortcut Master.

The manufacturers menu does not work on some models of devices with Android 4.2 JellyBean (X.X.1, X.X.2), as well as on Android 5.1 Lollipop. Also invalid menu when the Cyanogen MOD firmware is installed. Android 4.4.2 when rebooting, changes made in the application are reset.

"Running the MTK engineering menu"

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

MobileUncle Tools program

The application functionality 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 IMEI number and improve GPS. Root-right is required for stable operation.

Utility Shortcut Master

The Shortcut Master program is designed to work with labels and system applications: creating, searching, deleting. The direct function of entering the engineering menu in it is not. But with it, you can view a list of secret commands operating on your device. And by clicking on the name of the command, you will see the drop-down menu in which there will be a "execute" item. Convenient, and does not require extra action.

Root-right to access the engineering menu

To get to the service menu on some Android versions, the user must have a superuser (root). You can get right using specialized applications: Farmaroot, Universalandroot, Romaster SU and others. To get root-access to the device with Farmaroot:

Install and run to the program. Link to Google Play: //play.Google.com/store/apps/details?id\u003dcom.farmaapps.FileManager&hl\u003dru.
If the application supports the root right to install your device, then on the screen you will see a list of possible actions, among them - "Get Root". Select this item.
Select one of the pre-installed ROOT methods.
The program will start the installation.
At the end of the procedure, you will see a message about the successful installation of root access.

Possible problems and solutions:

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

What can be configured in the menu

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

Audio: Strengthen the volume level

If your phone calls insufficiently loudly, 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 \u200b\u200b- set the numbers ascending, from 120 to 200. Increase the value in the Max paragraph. Vol - Maximum 200. Press the SET button to save the settings.

Audio: increase the volume of telephone conversation

To enhance the tone of the speaker for conversations, in the AUDIO service menu section, select Normal Mode and open the Sph. Set values \u200b\u200bfor signal levels (LEVEL 1-6) from 100 to 150, and MAX number. Vol. - Up to 160.

To enhance the sensitivity of the microphone, go to the AUDIO - NORMAL MODE - MIC menu. For each level, assign the same microphone sensitivity values, for example, 200. Press the SET button, restart and check whether the interlocutor hear you better.

Video: Adjust the sound parameters in the engineering menu

Battery: Disable unused frequency

Smartphones quickly spend the battery life of applications, maintain cellular communication and network connections. With the help of the engineering menu, you can increase the battery life.

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

In Engineer Mode, open the Band Mode item. Disconnect unused frequencies by removing the check mark from the respective items - PCS1900 and GSM850. If the device supports two SIM cards, open the alternate SIM1 and SIM2 items and follow these steps in each. Press the SET button to save the settings.

If the smartphone and the SIM card operate 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 the scan of disconnected networks by returning to the same menu and installing the check mark.

Camera: Photo and video settings

By default, Android devices store snapshots in JPEG format. Meanwhile, photographers prefer to remove and process material in RAW to get more editing features. The technical menu allows you to select the desired image format.

In the Find Camera menu and select Capture Type. Install the photo format - RAW and press SET. Also in the Camera menu, you can enlarge the size of the pictures, set the ISO value, turn on the removal in the HDR for a higher photo detail, set the frame rate for the video. After changing each parameter, do not forget to press SET to save the settings.

Recovery mode

Recovery Mode - Analog BIOS on a computer, allows you to control the device without logging into the Android system. Recovery mode features:

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

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

If the settings are not preserved

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

To enter the settings after changing the parameters, make the tap on the Set button at the bottom of the screen. If the parameters are reset after the device is restarted, try entering the technical menus not through the application, but using a digital command.

Services service devices for Android

In addition to the technical menu, manage the functions of smartphones on Android allow secret USSD codes - combinations of numbers and symbols, which the user performs the action. Secret codes for different devices are shown in the table.

Table: List of Secret Commands for Android

Manufacturer	Digital command	Value
Codes for most manufacturers	##7780##	Rollback of settings and uninstalling user applications
	27673855#	Changing the firmware, total rollback settings.
	##232339## ##526##	Check wireless connections
	##34971539##	Camera Detailed Information
	##232338##	View Wi-Fi address
	##273283255663282##*	Activation of the backup of the media on the phone
	##1472365##	Express Test GPS
	##0##*	Screen check
	##2663##	View Touchscreen Information
	##2664##	Testing touchscreen
	##4636##	General Data Devices and Batteries
	##0673## ##0289##	Audiotestes
	##7262626##	Check receiving GSM.
	##0842##	Test Vibrational and Display Brightness
	##3264##	RAM information
	##232331##	Bluetooth communication Testing
	##8255##	Check Google Talk.
	##232337##	Bluetooth Address Information
	##1234##	Data firmware apparatus
	##44336##	Date of device assembly
	*#06#	Information about the issue IMEI
	##197328640##	Test service activity
	##1111##	FREE-TO-AIR software version
	##2222##	Iron room for free-to-air
	##0588##	Checking the approximation sensor
Sony (on the devices there are uniform commands)	05*#	Removing the lock from the PUK code
Motorola.	*#06#	IMEI
	##786##	Rollback of settings to the initial
	##1234## ##7873778##	Opening Applications with Root Rights
	##2432546##	Check availability
	##2486##	Login to the service menu
HTC	##4636##	Service menu
	##3282#	System Application EPST.
	##8255##	G-Talk Monitor
	##33284#	Network status
	##3424##	Test functionality
	##3424#	Diagnostics of the device
	##7738#	Diagnostics protocol
	##8626337#	Voice Coder.
Samsung (efficient shared codes)	## 778 (+ call)	Activation EPST Menu
LG (working 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 the service code did not work, do not be discouraged - install and run the Secret Codes application (Link to Google Play: //play.google.com/store/apps/details?id\u003dfr.simon.marquis.secretcodes&hl\u003d RU). The program will analyze the combination in the device and offer you a list. You can activate the combination directly in the application with one click on the name.

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

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

Options configured in engineering menu

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

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

Video: Smartphone setup capabilities through engineering menu

Commands to access the menu

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

Main codes for entering the engineering menu

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

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

Commands provided by Google for Android OS

Android factory service codes, showing technical information about the device, often do not have bindings to the manufacturer. Basically, they are all "sews" in the default Android. The group "Numbering" teams is agreed by Google - on the rights of the Android operating system - with manufacturers of tablets and smartphones.

Table: Android factory service codes

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

The most demanded service codes of the engineering menu

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

Table: Service codes for changing phone settings

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

When using commands, you must consider the following:

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

How to enter the engineering menu

To get to the engineering menu, follow these steps.

Video: How to open an engineering menu on Android

What to do if it did not work in the menu

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

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

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

How to Save Settings

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

It is not recommended by setting the value of any setting and confirming it with the SET key ("Set"), turn off or restart the smartphone by pressing the power button, pull out the battery from the device, etc. The output from the engineering menu can be pressed in the press - sometimes with hold For a few seconds - the same "Back" key, which is under the display. When you exit the engineering menu on the smartphone screen, a request message will appear about the need to save the generated settings - confirm it. There are tips on some of the sections of the engineering menu:

The reason why the engineering menu still does not save the settings may be "raw" firmware. Find out which version and build Android are suitable for your device. If you have a branded smartphone with the version of Android, which has pre-installed programs and components from Beeline, MTS, MegaFon or Tele2 - boldly establish a "custom" version, for example, a well-known CyanogenMod assembly. There may be any earlier - or, on the contrary, the most "fresh" version of Android.

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

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

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

The "Fresh" version - the more settings in the engineering menu will be in Russian. In the earliest versions of Android (1.x, 2.x), all service settings were in English. A little learn technical English, you can easily remember the purpose of each of the settings and if necessary, you can change them all in a few minutes.

The availability of the engineering menu is in whole or in part, it decides not the Android version, but the brand and model of the smartphone. Try different combinations and programs, but not too fond.

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

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

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

But in our digital world it is impossible to save any information!

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

Reset.

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

Reinstall the firmware.

Reset all settings with reinstalling the firmware can be using the * 2767 * 3855 # code. You can flash the phone via connection to a computer and installing a new firmware.

Test mode.

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

Camera information.

If you want to know what the camera is installed on your phone, type * # * # 34971539 # *.

Backup media files.

Oddly enough, you can backup copies of media files using a special code. Just type * # * 663 282 * # * # *.

Google Talk Monitoring Service.

Yes, Google spies you. And if you type * # * # 8255 # * # *, the monitoring service will open, which will tell you which information is known to Google.

Battery charge.

The battery charge is displayed in the upper right corner of the screen, but if you dial * # 0228 #, you can learn more.

Information about encryption.

What encryption uses your operator to protect your data? The answer to this question you will learn by typing * # 32489 #.

Data use statistics.

It is interesting for us to find out what the amount of data we use, because it often seems that money is not clear where. Check your operator: Dial * # 3282 * 727 336 * #.

3D features.

It does not work on all devices, but you can check the 3D settings by typing 3845 # * 920 #. So you will learn whether your device is supported by the display of 3D modules.

Check WLAN network.

Check the Wireless LAN settings are very simple: dial 526 # * # * # * # * # *.

GPS check.

To check how true your GPS settings are (because sometimes the global positioning system gives failure), enter * # * # 1575 # * # *.

Bluetooth check.

Do you have Bluetooth-connections gaps? Or has the connection become too slow? Check the Bluetooth settings and accessories by typing * # * # 232331 # *.

Check FTA SW (software).

If you want to know which software is used by your device, type * # * # 1111 # * # *.

Check FTA HW (components).

And if you are interested, on what gland your software will plow, type * # * # 2222 # * # *.

Diagnostic settings.

You can see the diagnostic test settings by typing * # 9090 #.

Here is the complete list of Android codes currently operating:

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

* # * # 7780 # * # * Resetting settings. Delete only applications.

* 2767 * 3855 # Full reset settings, reinstall the firmware.

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

* # 273283 * 255 * 663282 * # * Quick media files.

* # * # * # * Mode of testing of service activity.

# 526 # * # * Wireless testing.

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

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

* # * # 1575 # * # * various GPS tests.

* # * # 0283 # * # * Test Loopback.

* # * # * # * Test LCD display.

* # * # * # * # 0289 # * # * audio test.

* # * # 0842 # * # * Test vibration and backlight.

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

* # * # 2664 # * # * Test Touchscreen.

* # * # 0588 # * # * Test sensor approximation.

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

* # * # 232331 # * Bluetooth test

* # * # * Test GSM signal.

# * # 232337 # * # * Bluetooth address.

* # * # 8255 # * # * Google Talk service test.

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

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

* # * # 2222 # * # * FTA iron version.

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

# 8351 # * # * # * Enable / disable voice recording mode.