Inzhenernoe menyu na Android: kak voyti i nastroit

Inzhenernoe menyu — eto skrytyy razdel operatsionnoy sistemy Android, prednaznachennyy dlya diagnostiki oborudovaniya i tonkoy nastroyki parametrov, nedostupnykh v obychnom interfeyse. Developers use it at the stage of creating smartphones to test radio modules, screens, sensors and audio paths. The average user often needs access here in case of communication problems, after an unsuccessful flashing, or to calibrate proximity sensors.

This section is entered through special USSD-kody or third-party applications, however, the procedure greatly depends on the device manufacturer and firmware version. Nekorrektnoe izmenenie parametrov v etom menyu mozhet privesti k potere signala, nerabotosposobnosti tachskrina ili dazhe "okirpichivaniyu" gadzheta, poetomu deystvovat sleduet predelno ostorozhno i osoznanno.

Nizhe my podrobno razberem universalnye metody dostupa, spetsificheskie kody dlya populyarnykh brendov i osnovnye funktsii, kotorye mozhno bezopasno ispolzovat dlya uluchsheniya raboty vashego smartphone.

Universal login methods through codes

The fastest way to get into the service mode is to use the phone's numeric keypad. You don't need root access or a computer connection, just enter a sequence of characters. Odnako stoit pomnit, chto na sovremennykh versiyakh Android (nachinaya s 9.0 i vyshe) mnogie proizvoditeli blokiruyut eti kody v tselyakh bezopasnosti.

Naibolee rasprostranennym universalnym kodom yavlyaetsya ##4636##. Posle vvoda poslednego simvola menyu dolzhno otkrytsya avtomaticheski, bez neobkhodimosti nazhatiya knopki vyzova. This code opens a section Testingwhere battery information, usage statistics and phone information are available.

If the first code did not work, try alternative combinations that may be active on your device:

• 📞 ##8255## — launches GTalk service mode (rare, but found).
• 🔧 ##3646633## — often used on processors MediaTek for deep hardware customization.
• 📡 ##197328640## —service menu for devices based on Samsung.

Please note that entering these commands is only possible through the standard "Phone" application. Third-party dialers from the app store may not process these sequences correctly, ignoring them as plain text.

Vendor-specific codes

Large vendors often modify the shell Android so deeply that standard commands stop working. In such cases, it is necessary to use proprietary engineering codes developed specifically for this brand. Knowledge of these combinations is critical for owners of specific brands.

For devices Xiaomi, Redmi and Poco the main code is ##6484## or ##4636##. The first opens the extended CIT (Customer Information Test) menu, which allows you to test each component of the device individually. The second gives access to network settings.

Owners Samsung are a little more lucky: they have one of the most functional service modes. Kod #0# otkryvaet menyu bystroy diagnostiki ekrana, sensora i dinamikov. Dlya dostupa k bolee glubokim nastroykam radiomodulya ispolzuetsya kod *#2263#.

Cmartfony na protsessorakh MediaTek (chto vklyuchaet mnogie modeli Oppo, Vivo, Realme i byudzhetnye Xiaomi) chasto reagiruyut na kod ##3646633##. Eto menyu pozvolyaet menyat region radiomodulya, chto inogda pomogaet pri problemakh s lovley seti v rouminge.

Brend	Osnovnoy kod	Dopolnitelnyy kod	Naznachenie
Samsung	#0#	*#2263#	Test ekrana i radiomodulya
Xiaomi	##6484##	##4636##	Polnaya diagnostika CIT
Huawei	##2846579##	##1212##	Project Menu i testy
Sony	##7378423##	#0#	Service Mode
LG	3845#*#model#	#546368##model#	Cust Menu (zavisit ot modeli)

Ctoit uchityvat, chto proshivki mogut obnovlyatsya, i razrabotchiki inogda blokiruyut ranee rabochie kody v novykh versiyakh PO. If the code stops working after updating the system, this is the normal behavior of device protection.

Use of third-party applications

When built-in codes do not work or are blocked by the manufacturer, specialized utilities from the store come to the rescue. Google Play. These applications act as an intermediary, sending necessary requests to the system or providing a graphical interface for hidden settings.

One ​​of the most popular tools is the application MTK Engineering Mode. It is designed specifically for devices on chips MediaTek and allows you to access the Hardware Testing, Location and Connectivity tabs without entering complex codes. Prilozhenie avtomaticheski opredelyaet vozmozhnosti vashego protsessora.

Dlya ustroystv na protsessorakh Qualcomm i drugikh platformakh khorosho zarekomendovalo sebya prilozhenie QuickShortcutMaker. It does not open the engineering menu directly, but allows you to create shortcuts to hidden system activities, including test modes, which are usually hidden deep in the depths. Attention: Download such utilities only from the official store. Third-party APK files from forums may contain malicious code that can steal your personal data or take full control of your device. Android.

⚠️ Attention: Download such utilities only from the official store Google Play. Third-party APKs from forums may contain malicious code that can steal your personal data or take full control of your device.

Another useful tool is Phone Info SAM. Although it is positioned as a tool for viewing device information, it has functions for verifying the authenticity of the smartphone and accessing some hidden menus, especially relevant for owners Samsung.

Why codes stopped working on Android 10+

Starting with Android 10, Google has tightened security policies and limited the access of applications and USSD codes to privileged system functions. Many codes have been disabled at the framework level to prevent inexperienced users from accidentally breaking the device. Oboyti eto mozhno tolko poluchiv Root-prava, chto lishaet garantii.

Osnovnye funktsii i nastroyka seti

Camaya vostrebovannaya funktsiya inzhenernogo menyu dlya obychnogo polzovatelya — eto nastroyka predpochtitelnogo tipa seti. Eto aktualno v zonakh neuverennogo priema, kogda telefon postoyanno pereklyuchaetsya mezhdu 3G i 4G, vyzyvaya razryvy soedineniya.

Chtoby zafiksirovat set, nuzhno pereyti v razdel Phone Information (chasto dostupen po kodu ##4636##). There you will find a drop-down list Set Preferred Network Type. Vybor rezhima LTE Only zastavit telefon iskat isklyuchitelno vyshki 4G, ignoriruya bolee starye standarty.

Odnako ispolzovanie rezhima LTE Only imeet sereznyy pobochnyy effekt: v bolshinstve sluchaev vkhodyashchie i iskhodyashchie golosovye vyzovy stanut nevozmozhny, esli vash operator ne podderzhivaet tekhnologiyu VoLTE (Voice over LTE). The phone simply will not be able to switch to 3G to make a call.

• 📶 GSM Only — forced operation only in 2G networks. Polezno dlya ekonomii zaryada batarei v glukhoy mestnosti, gde 4G est, no signal ochen slabyy i telefon tratit mnogo energii na ego poisk.
• 🌐 WCDMA Only — rabota tolko v 3G. Can be used to improve the quality of voice communication where 4G is busy and 3G is more stable.
• 🚀 NR/LTE/GSM —automatic selection of the best available standard, including 5G (NR). Rekomenduetsya dlya povsednevnogo ispolzovaniya.

Takzhe v etom razdele mozhno vypolnit operatsiyu Refresh ili Turn Off Radio / Turn On Radio. Eto programmnaya perezagruzka radiomodulya, kotoraya chasto pomogaet vosstanovit set bystree, chem polnoe perepodklyuchenie akkumulyatora ili perezagruzka telefona.

Diagnostika displeya i sensora

Inzhenernoe menyu pozvolyaet provesti detalnuyu proverku ekrana, chto osobenno polezno pri pokupke b/u ustroystva ili posle padeniya smartfona. Vy mozhete vyyavit bitye pikseli, proverit ravnomernost podsvetki i otkalibrovat sensornyy sloy.

V razdele testirovaniya displeya (chasto vyzyvaetsya kodom #0# na Samsung ili cherez CIT na Xiaomi) dostupny testy tsvetov: krasnyy, zelenyy, siniy i belyy. Carefully inspect the screen at the maximum brightness level for dark spots or dots that do not change color.

The sensor test (Touch) usually asks you to draw lines along special contours or fill a grid of squares with touches. If any sector is not colored when you swipe your finger, it means that the touchscreen in this area is damaged or has “dead zones.”

There is a separate procedure for calibrating the proximity sensor (which turns off the screen during a call). Esli ekran ne gasnet ili ne vklyuchaetsya, kogda vy ubiraete telefon ot ukha, naydite punkt Proximity Sensor and follow the instructions on the screen (usually you need to cover the top of the phone with your palm and remove it several times).

⚠️ Warning: Do not attempt to change the factory color or touchscreen calibration values ​​manually unless you see obvious problems. Resetting the factory calibration settings can lead to incorrect operation of the sensor, which is difficult to fix without special equipment.

Resetting IMEI and problems with the radio module

One ​​of the most difficult and risky operations in the engineering menu is restoring IMEI. This unique identifier may disappear after an unsuccessful flashing or damage to the partition NVRAM. Without IMEI, the phone does not see the network and cannot make calls.

In the modem engineering setup menu (often on the base MediaTek) there is a section CDS Information -> Radio Information. There you can manually register IMEI using AT commands. The command looks something like this:

AT+EGMR=1.7,"Your_IMEI_1"
AT+EGMR=1.10,"Your_IMEI_2"

Where the first parameter is responsible for the first SIM slot, and the second for the second. You need to enter these commands into the AT commands input field, and then press the Sendbutton. After this, the device must be rebooted.

It is important to understand the legal aspect: changing the IMEI to someone else's number or faking an identifier is an illegal act in many countries. You should only restore your original number indicated on the box or in the documents.

⚠️ Attention: Incorrect entry of AT commands can permanently block the radio module. If you are not sure of your actions, it is better to contact a specialized service center, where the procedure will be carried out using programmers.

Frequently asked questions and troubleshooting

Why does the code ##4636## not work on my phone?

The manufacturer of your smartphone could have disabled this code in firmware Try installing the application QuickShortcutMaker, search for "Testing" or "Device Info" and create a shortcut to launch this menu directly, bypassing dialing a number.

Is it possible to increase the speaker volume through the engineering menu?

Yes, in the section Audio (often on MediaTek chips) you can adjust the volume levels for different scenarios (headphones, speaker, headset). However, set the values ​​with caution: exceeding the permissible limits can physically burn the speaker.

Is it safe to enter the engineering menu?

Viewing information (software versions, statistics, screen tests) is completely safe. The only sections that are dangerous are those that allow you to write data to the modem memory (IMEI, antenna calibration) or change processor frequencies. Avoid making changes to unfamiliar fields.

How to exit the engineering menu if it is frozen?

Usually it is enough to press the "Back" button on the navigation bar or the physical return button. If the interface does not respond, try bringing up the multitasking menu and closing the application. In extreme cases, simply rebooting the smartphone will help.

Will the engineering menu disappear after resetting the settings?

No, this is a system partition built into the firmware. Resetting to factory settings (Factory Reset) will not remove the ability to log in using codes, but will return all parameters you changed (if they were saved) to the factory values.