Zte t620 engineering menu. Engineering menu in Android phones

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 versions of Android the command may 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:

Some smartphone owners complain that they have difficulty hearing the other person; music is played quietly through the speaker. There are several ways to increase the speaker volume on Android. Volume swing is not the only possible method.

Smartphone owners who have difficulty distinguishing the words of their interlocutor during conversations will be helped by information on how to increase the volume on Android through the engineering menu. You can adjust the volume of the speaker and headphones.

Initially, the engineering menu is hidden from users. This is explained by the fact that it is necessary only for experienced smartphone owners who take full responsibility for possible problems with an electronic device.

Engineering menu available only to owners of smartphones with a MediaTek processor. To activate it, there are special codes that may differ depending on the brand of the device.

You need to enter codes like a regular number or USSD request. There is another way to call up the engineering menu - using special applications.

1. The most popular is MTK Engineering Mode.
2. There is another free application - “Launch the MTK engineering menu”.

The choice of method will have virtually no effect on the algorithm of actions on how to increase the volume of the speakers. After entering the engineering menu, you need to enter the MTK Settings section, then select Hardware Testing Audio. After this, a list will open consisting of 8 categories. Of these, 5 are categories for increasing or decreasing the volume of sounds.

1. Normal mode. In it, the phone works constantly when no peripheral devices are connected to it.
2. Headset mode, it is activated when speakers or headphones are connected.
3. Speakerphone mode, Android starts using it when nothing is connected to the smartphone and the user switches to speakerphone mode when making a call.
4. Headphone mode with hands-free calling. The mode is activated when a person switches to loudspeaker mode with headphones connected to an electronic device.
5. Volume during a call. Its activation occurs when a person is talking to someone as usual and no additional devices are connected to the phone.

In any of the above categories, when you select them, several sections will open.

1. Microphone (Mic)
2. The first and, in some smartphones, the second hearing speaker. (Sph, Sph2)
3. Sid – changing the values ​​of this parameter is not recommended, otherwise you can achieve the effect that a person will hear himself and not the interlocutor during a conversation.
4. Media regulation. (Media)
5. Adjusting the volume of incoming calls. (Ring)
6. Some smartphones have a radio volume setting. (FMR)

Examples

For example, if the interlocutor practically cannot hear you, you need to increase the microphone volume.

To do this, select Mic and maximum Level, which indicates the maximum step of the volume swing, then change the values ​​in the Value section, thereby increasing the microphone volume. After that, click Set. If the Setting success window appears, the values ​​have been changed and you can test them.

If a person’s smartphone does not have a high volume of incoming calls, the following steps must be taken. You will need to go to the engineering menu of the electronic device, go to the Audio section, then go to LoudSpeaker and select the Ring value. After this, for each step of the volume swing you need to increase the values. It is not recommended to set it to the maximum, for example, with a maximum of 160, it is advisable to set it to no more than 156. Otherwise, the speaker will make wheezing and noise when making a call.

Finally

After any changes to the Value values, do not forget about the Set button, otherwise the actions will not be recorded and applied. Also, after applying new settings, some smartphones need to be rebooted and only then tested the new values.

Before making any changes, experienced smartphone users recommend rewriting the default values. This will allow you to return everything to its place in case of unsuccessful adjustment of the smartphone volume.

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A beginner who bought a smartphone or tablet based on operating system Android, after a while, feels the need to reconfigure something in it or adjust it more precisely. Entering the Android engineering menu is simple: you just need to know the special commands.

The hidden engineering menu in Android devices allows you to manage system settings of your smartphone or tablet that are not available in the standard menu. For example, they allow you to increase the speaker volume during calls, forcefully select the frequency range of the network being used, enable a photo or video format that is not in the main camera settings, etc.

Parameters configured in the engineering menu

Using the engineering menu you can access functions such as:

• speaker or headphone volume;
• improved speech recognition;
• microphone sensitivity;
• voice quality when making calls;
• forced cellular network selection mode: “GSM only”, “WCDMA only”, “LTE only” (some network modes may not be available in the standard settings);
• binding to one base station, frequency or channel number;
• choice of technology and cellular data speed;
• testing and overclocking the processor;
• enable/disable sleep mode;
• testing Wi-Fi and Bluetooth radio modules;
• auto switching 2G/3G/4G in sleep mode;
• camera test drive;
• changing the photo format (default is JPEG or PNG);
• fine-tuning the display brightness and its response to illumination;
• locking/unlocking auto answer settings for incoming calls;
• improved GPS performance;
• full “reset”, including factory formatting of the smartphone;
• testing and setting motion sensors;
• testing color rendering on the display;
• testing and setting up vibration alerts;
• backup of multimedia files;
• determination of the level of harmful radiation (SAR) on a single device;
• FM radio settings and behavior.

Video: options for customizing a smartphone through the engineering menu

Commands for accessing menus

Commands for accessing the engineering menu vary depending on the manufacturer. There are also common commands for all versions of Android that allow you to configure individual device functions.

Main codes for entering the engineering menu

The commands you enter differ for different brands devices - select those that are suitable. It is not forbidden to check everything - commands that do not correspond to a specific manufacturer simply will not work.

Table: commands for accessing the engineering menu of various manufacturers

Google Commands for Android OS

Factory service Android codes, showing technical information information about the device are often not linked to the manufacturer. Basically, they are all built into Android by default. The range of “numbering” of commands was agreed upon by Google - as the creator of the operating system Android systems- with manufacturers of tablets and smartphones.

Table: Android factory service codes

The most popular service codes of the engineering menu

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

Table: service codes for changing phone settings

When using commands, keep the following in mind:

• By updating the camera firmware through the engineering menu, you can find out about the version of this firmware and the number of its updates - and also save this update to an image in the internal memory and on the SD card. It is not recommended to reflash the camera again - if it fails, you will simply ruin it;
• when resetting the Android system, deleting all user Google data A message will appear on the screen asking you to confirm the reset.

How to enter the engineering menu

To get to the engineering menu, follow these steps.

Video: how to open the engineering menu on Android

What to do if you can’t enter the menu

It happens that none of the commands intended for a particular brand of device are suitable - this is how the manufacturer protects inexperienced users from not fully thought-out actions. Some manufacturers, after software debugging of a smartphone, completely remove the engineering menu, and all of the above commands simply do not work. For example, Samsung does this. Some of the commands entered can be harmful, such as software

Often, instead of general service commands, more specific ones are triggered. If, despite all your attempts to “reach out” to the engineering menu, none of the service codes work, you need special applications.

Install the free Mobileuncle Tools application - it will distinguish between hardware and system settings. You may need to obtain Root access on Android. There are other applications: EngModeMtkShortcut, BetterCut, etc.

How to save settings

To ensure that settings made using engineering Android menu, have been preserved, you need to get out of it correctly. While in any section of the engineering menu, use the on-screen “Back” key either in the menu itself, or press the cancel call button or the “Back” key under the display - it is indicated as a reversal arrow - to go to a higher level of the engineering menu.

It is not recommended, after setting the value of any setting and confirming it with the Set key, turning off or rebooting the smartphone by pressing the power button, removing the battery from the device, etc. Exiting the engineering menu can involve pressing - sometimes holding for a few seconds - the same “Back” key below the display. When you exit the engineering menu, a message will appear on the smartphone screen asking you to save the settings you have made - 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 Android versions and builds are right for your device. If you have a branded smartphone with a version of Android that has pre-installed programs and components from Beeline, MTS, MegaFon or Tele2, feel free to install a “custom” version, for example, the well-known CyanogenMod assembly. Any earlier one may be suitable - or, conversely, the most “fresh” one - Android version.

In some cases, it is impossible to enter the engineering menu without obtaining Root rights. The task is to make an Android smartphone “rooted”. In other words, get “superuser” capabilities on your smartphone, allowing you to take the smartphone under the clearest and most complete control. This is achieved in the following ways, use any of them.

1. Install a custom (modified) version of Android on your smartphone. It already includes the Superuser software component, which provides access not only to the engineering menu, but also to the system folder.
2. Download from the Android Market any of the apps that can hack Android without using a computer. Suitable here different programs: Universal AndRoot, Unlock Root, z4root, Revolutionary, etc. Not all of them can help - you will have to test everything until it works.
3. You can also try applications for Windows that perform all manipulations with Root access on a smartphone directly from the PC - for example, the VRoot program. You also need a USB-microUSB cable - it is impossible to hack Android on a smartphone via Wi-Fi.

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

The more recent the 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 on English language. Having learned a little 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 - in whole or in part - is decided not by the Android version, but by the make and model of the smartphone. Try it different combinations and programs, but don't get too carried away.

If you perform inept actions or forget the entered codes, there is a risk of turning your smartphone into a lifeless device, and only a service center will be able to restore it to you.

And since if you “root” the device, you automatically lose the warranty. Android engineering menu is one of the most useful tools “advanced” user, preventing him from wasting the hardware resource of his device and the resource of cellular and wireless networks wasted. And it doesn’t matter what version of Android you have - 2.2, 4.2.2, 4.4.2 KitKat, 5.1, 6.0 or another - the engineering menu codes are determined only by the manufacturer. By completely subjugating your smartphone or tablet, you will deprive it of the opportunity to “live its own life” not according to your schedule, but according to the script of the manufacturer itself, mobile operators

and other intermediary companies, one way or another involved in the operation of mobile equipment in cellular networks. This is the shortest path to professionalism. Why do you need rooting? Android devices

The Android engineering menu is nothing more than a special subroutine designed for testing by developers of the operating system and device sensors. The interface of this program is represented by a set of options that allow you to change the hardware configuration of your mobile device. With its help, you can get comprehensive information about the hardware of the gadget, test the processor, RAM and physical flash memory, wireless connection modes, configure the parameters of the camera, display, microphone, speakers and much more.

Entering the engineering menu

All this, of course, is good, but how do you go to the engineering menu if there is no corresponding option in the Android interface? The advanced hardware settings menu is entered using a special code entered in the phone number dialing line. The menu should open immediately after entering the last character of the combination, but in some cases you may need to press the call button.

There is nothing complicated in the procedure itself, however, it should be taken into account that for different models mobile gadgets have their own codes. Below we have provided a list of codes for the most popular manufacturers.

Engineering menu codes in Android are universal, however, their correct operation on phones with “left” firmware is not guaranteed. To access hardware Android settings You can also use special programs, for example, "MTK Engineering Menu" or "Mobileuncle MTK Tools".

Such applications are especially useful on tablets whose firmware does not provide a dialer. The interface and set of available options in these programs are somewhat different, however, understanding them will not be difficult.

Whatever method you use, you need to exercise maximum caution when working with the engineering menu. Before starting work, it is strongly recommended that you write down all the initial parameter values ​​so that you can restore the settings. It is unacceptable to experiment with the engineering menu just to find out what comes out of it, as you can render your device unusable!

To obtain a list of engineering codes for specific model phone can be used special application Secret Codes, available on Google Play. On some mobile device models, full access to the engineering menu may require superuser rights (root).

What you can change using the menu

You know how to get to the engineering menu, now let's find out what settings can be made using it. The possibilities are more than wide. The menu subroutine supports changing the speaker volume level and microphone sensitivity, built-in camera settings, audio parameters, GPS, Bluetooth and Wi-Fi modules, turning off unused frequencies to save battery power. You can also test key components of your device and external memory card, configure I/O operations, determine the exact temperature of the processor and battery, and the level of harmful electromagnetic radiation.

Another useful function is to gain access to recovery mode - an analogue of BIOS on computers, which in turn contains a whole set of settings. Recovery mode features include resetting the device to factory settings, updating the firmware, creating a backup copy of the operating system, gaining root access, and deleting sensitive user data. It is not possible to list all the engineering menu options in one article; the more sensors and components there are in a phone or tablet, the more extensive it will be.

Increasing phone volume through the engineering menu

Now let’s demonstrate how to work with hardware settings using the example of one of the most popular operations and learn how to increase the volume on Android through the engineering menu. So, go to the menu using Mobileuncle MTK Tools or by entering the “magic” code, then find and open the Audio subsection. If you entered the menu through the Mobileuncle Tools program, this subsection will be located in the senior section Engineer Mode, in other cases it is usually located on the Hardware Testing tab.

In the Audio subsection you will have the following options:

• Normal Mode – normal mode that works when a headset is not connected to the device.
• Headset Mode – headset mode that turns on when headphones or speakers are connected to the smartphone.
• LoudSpeaker Mode – loudspeaker mode. Activated when the speakerphone is turned on, provided that a headset is not connected to the device.
• Headset_LoudSpeaker Mode – loudspeaker mode with a connected headset. The same as the previous one, but with headphones or speakers connected.
• Speech Enhancement - this mode is activated when talking on the phone without using the speakerphone.

There may be other settings in the section, for example, Debug Info and Speech Logger, but it is better not to touch them. Select the mode for which you want to change the volume level (let it be Normal Mode), select Type in the list that opens and indicate for which function we will change the volume. The following functions may be available:

• Ring – adjust the volume for incoming calls;
• Media – adjust the speaker volume when playing multimedia;
• Sip – sound settings for Internet calls;
• Sph – sound settings of the conversational speaker;
• Sph2 – sound settings of the second speaker (the option may not be available);
• Mic – change the microphone sensitivity;
• FMR – FM radio volume settings;
• Sid – it is better not to touch this parameter, otherwise problems with the interlocutor’s voice may occur.

Having selected a function, scroll through the current list and set desired value Value (from 0 to 255) and click to apply the new Set settings.

To change the volume level, you can also use preset templates - the Level option. Most phones have seven levels, from 0 to 6. It is advisable not to touch the Max Vol setting, just as you should not set the Value values ​​too high, otherwise the sound in the speakers will begin to wheeze. Other modes in the Audio subsection are configured in a similar way.

Some smartphone and tablet models require a reboot for the new settings to take effect.

Reset

And the last thing we will look at today is resetting the engineering menu parameters to factory values. It may be needed if, after making changes, the device begins to work incorrectly. There are several reset methods. If the system boots normally, go to the settings and open the “Backup and Reset” subsection.

You can also reset the engineering menu by entering a special service code in the dialer. Usually it is *2767*3855#, *#*#7780#*#* or *#*#7378423#*#*, but your phone model may require a different code.

Another option is to use the recovery mode mentioned above. To get into it, use one of these combinations:

• Power button + volume down.
• Power button + volume up.
• Power button + Home button + Volume down/up.
• Power button + volume up + volume down.

In the list of options that opens, select “wipe data/factory reset” → “Yes – delete all user data” → “reboot system now”. The device will reboot and the settings will be reset.

There is another way to reset the engineering menu settings, but it requires superuser rights. Using any file manager with the support root rights, go to the root directory of the system, and then delete all or part of the contents of the folder data/nvram/apcfg/aprdcl and reboot.

Files in a folder aprdcl they are responsible for setting up the engineering menu. It is not necessary to delete all files at once. If you mess up, say, your audio settings, all you need to do to restore the original settings is delete files that have an audio string element in their names. And one moment. Regardless of the reset method, always make a backup of your personal data and applications, as they may all be lost.

Purchasing a new smartphone or tablet is a real holiday for many. Every owner expects the gadget to be long years please with its reliable operation and the absence of any problems. Moreover, regardless of who the collector is and what control system installed.

However, as often happens, modern mobile devices can hardly be called ideal, since some time after the start of use, issues are identified that the owner wants to correct, in one way or another improving the software part of his mobile assistant to the ideal. Of course, in my understanding. One of the available tools is the Android engineering menu.

Secret settings that everyone knows about

At the final stage of configuring the software component of the gadget running the Google system, developers use the so-called Android engineering menu. a special program that allows you to make adjustments to the operation of the device, perform technological tests, and view information from sensors. Since thoughtless use of this tool can lead to unpredictable results, access to it is most often hidden from users. However, in fact, the secret is already known to everyone - to learn how to call up the mentioned menu, you only need to spend a few minutes searching for recommendations.

A few important points

However, not all mobile devices can log into the Android engineering menu. In order to take advantage of its capabilities, you need to make sure that the gadget meets certain requirements.

Firstly, the central processor must be manufactured by MediaTek (or MTK). On inexpensive Spreadtrum models, for example, SC-6825, popular Snapdragon from Qualcomm, various Tegra NVidia and Intel, trying to launch the Android engineering menu is useless. It is not there. It will not be possible to achieve functionality, even if you carefully install the appropriate application.

Secondly, various modified operating systems, for example, CyanogenMod, popular in some circles, do not allow running the configuration program, since they were originally developed for devices with a Qualcomm processor that do not support the Android engineering menu. In addition, it is highly desirable that the operating system be original or created on a basic basis.

Thirdly, the application itself (file) must be present among the programs, even if hidden from the standard Explorer. Thus, some mobile device manufacturers, after completing the software settings, simply delete the “Android” engineering menu. Descriptions and recommendations for use in this case are useless, which is obvious.

Secret combination

There are several ways to get into the engineering menu settings on Android. It is impossible to say which one is better, since a direct comparison is incorrect. Therefore, we will consider them one by one.

One of the most “ancient” options, which was used in the first models of smartphones and tablets, is that the user in the dialer program (the so-called dialer) dials not the subscriber’s number, but a special code of the Android engineering menu, similar to checking funds in the account. If the combination is recognized and accepted, the configuration application is launched. Some mobile device companies use their own modified code, so standard set doesn't always work. Otherwise, to call the menu, you should type the following character order without spaces - * # * # 36 46 633 # * # *. It's that simple.

Traditional access method

Using a secret combination is not always convenient, if only because the order of the symbols is easy to forget. Also, in the case of a changed set, it is easier to use the program rather than search correct order following signs. One of the most famous applications is the so-called “Mobile Uncle”, or MobileUncle Tools. It is free, so there are usually no problems with finding and installing it. At the time of writing, the current version is the official 2.9.9 or build 3.1.4, which has additional support for some new processors.

In order for the program to work, the user must first obtain root rights on his gadget. There are a lot of applications for this, for example, KingRoot, SuperSu, etc. In this article we will not talk about the nuances of working with a rooted device, since this is a separate voluminous topic. After launching the application, you should select the third item called Engineer Mode (both in Russian and English versions), and in the window that opens - “Work with MTK”. When prompted to provide root access, you must answer in the affirmative.

How to restore access to the engineer mode

If the manufacturer of the mobile gadget took care of the security of the operating system by prudently removing the configuration program, then it can be reinstalled. To do this, you need to find an installer on the Internet that restores EngineerMode.apk and install it.

We do not indicate the exact name due to the abundance of analogue clones. For example, one of them is called “Engineering Mode”. You can also simply copy the missing file to the system folder located on the path system\app. After this, you can use any method for access: either dialing a number or directly calling from the program interface. Please note that these operations require

Features of the miracle program

Through the engineering menu, despite the ambiguous attitude of gadget owners to this, it makes it possible to solve several important problems. In particular, adjust the sensitivity of the microphone, cure the “childhood disease” manifested in insufficient volume of the system speaker, reduce battery power consumption by disabling scanning of “extra” ranges, and reduce the time it takes the global positioning system receiver to search for satellites. Let's look at the above functions in more detail, since they are the ones that are most in demand.

Ringer volume

Raising the ringer volume is very easy. To do this, select the “Audio” section by swiping to the right. A list of modes will appear. LoudSpeaker Mode, Ring subsection, is responsible for the system speaker. The parameter in the first window should not be changed, but in the second you can enter more high value. The developers may initially set the indicator to 130, which is quite quiet, but 156 is already close to the limit. The maximum is 160. After editing, you need to press the Set button, located here, and reboot the device, correctly exiting the program.

Mobile operator frequencies

To optimize the power consumption of a mobile communication device, you can disable scanning of “extra” frequencies. In our country, when working in regular 2G/3G networks, the standard frequencies are 900 and 1800 MHz. The other pair, 850 and 1900 MHz, is an American standard. To enable or disable it, you need to select the Band Mode item, go into the settings for SIM-1 and SIM-2 one by one and uncheck/check the desired boxes. Confirmation is by pressing the Set button.

How to improve GPS? To improve performance, you need to turn on Wi-Fi, select Location in the Android engineering menu, go to Location Based Service and open EPO. Here you need to make sure that the Enabled and Download checkboxes are checked (if present). After this, you should return to YGPS and in the information section, alternately click “Full”, “Cold”, “Restart”. Next, you need to select the “Satellites” item and wait until the answer is recorded (green dots on the map). Everything takes from 2 to 5 minutes. After this, all that remains is to exit the menu, close the program and restart the gadget.

Summing up

The engineering menu of devices operating under control opens up opportunities for the owner of the gadget, the use of which allows you to configure the device in an optimal way. Often this the only way, allowing you to postpone the purchase of a new mobile assistant. This menu is contraindicated only for those who are already completely satisfied with the operation of their tablet, navigator or smartphone.