Service codes do not work. Engineering codes for Android

We present you a selection of secret codes that are designed for ultra-convenient use of various gadgets based on the Android OS. These codes are considered secret because they are intended for use by engineers in service centers. But advanced users who are familiar with such codes can also freely use them. Just hasten to warn that for a novice user such codes can be too complicated.

And here is the selection itself, just open the dial window, then enter the code.

* # 06 # - for receiving IMEI gadget;

* # * # 8351 # * # * - to enable the voice settings and dialing options;

* # * # 4636 # * # * - used to obtain various information about the state of the gadget and settings. When you enter the gadget's display, four menus will appear:

· Battery information;

· General information about the phone;

· Information about the modes of use of the device;

· Statistical battery operation.

* # * # 7780 # * # * - using this code, settings are reset to the factory settings. Which settings allows you to reset the code:

· Google account if its settings are saved on the gadget;

· Applications and data stored in the phone’s memory;

· Applications downloaded from the Internet;

It should be noted that with the help of this code such data will NOT be deleted:

· Applications and OS settings that were there initially;

· Data on the SD card (audio, photo, video, etc.).

Before starting the cleaning, the phone will ask you for confirmation of actions, so there is always the opportunity to terminate your actions.

* 2767 * 3855 # - think carefully before using this code. Absolutely all information on the device is deleted, including internal memory. With it, engineers commit to flashing smartphone software.

If the code was entered, then the only chance to restore everything back is to remove the battery as soon as possible and carry out the reverse settings through the PC.

* # * # 34971539 # * # * - this code must be used when you need information about the camera of a smartphone. When you enter the code, four sub-items will appear on the screen:

· To reset the camera to an image (it’s better not to do this!);

· To reset the settings on the internal memory;

· To get the version of the camera settings;

· To check the number of flashing camera settings.

Important! Do not attempt to use the first option. You do not need it and when it starts, the camera will simply stop functioning. You will have to contact the service center for help.

* # * # 7594 # * # * - change the settings of the on / off button. The menu of this code will allow you to configure the system so that the smartphone shuts down without a window with various options for shutdown appearing.

* # * # 273283 * 255 * 663 282 * # * # * - this code is intended for commission reserve copy   files (photos, documents, etc.).

* # * # 197328640 # * # * - the cipher is used to enter the service check state.

* # * # 232339 # * # * or * # * # 526 # * # * or * # * # 528 # * # - several codes that are commonly used for testing a wireless network.

* # * # 232338 # * # * - the cipher for the MAC Wi-Fi network.

* # * # 1472365 # * # * or * # * # 1575 # * # * - codes for testing GPS.

* # * # 232331 # * # * - testing Bluetooth.

* # * # 232337 # * # - the code allows you to see the Bluetooth address.

There are also ciphers for checking applications and devices that were originally on the smartphone:

· * # * # 0283 # * # * - Loopback check;

· * # * # 0 * # * # * - LCD testing;

· * # * # 0673 # * # * or * # * # 0289 # * # * - check sound / audio;

· * # * # 0842 # * # * - code for checking vibration and backlight level;

· * # * # 2663 # * # * or * # * # 2664 # * # * - to check the sensitivity of the display;

· * # * # 0588 # * # - zoom control.

These codes will become very practical for advanced users of gadgets based on the Android OS. We remind you again: it is advisable to use these codes only when absolutely necessary. Codes allow you to solve some problems that from time to time arise with smartphones, but can also lead to the deletion of important data and files. Therefore, it is worth considering all the pros and cons before using any code in practice.

Many users of Android smartphones and tablets are not even aware of the existence of so-called engineering or service codes. Service codes on smartphones and on regular phones appeared much earlier than the first version of the Android OS was released. They are intended mainly for service center engineers and advanced users, so we want to immediately warn readers: if you don’t know what this code is for, then you should not enter it, but if you still decide to enter the code, then you do it at your own peril and risk. It’s worth considering before entering any code for “Android”, because This can lead to partial or complete data loss and damage the device itself. If you decide to use codes, let's look at each engineering code in more detail:

* # 06 # - Learn IMEI;

* # * # 4636 # * # * - Information and settings;

* # * # 8351 # * # * - Voice Dialer Logging Enabled;

* # * # 4636 # * # * - This code can be used to get interesting information about the phone and battery. It shows the following 4 menus on the screen:
  - Information about the phone;
  - Information about the batteries;
  - Battery statistics;
  - Usage statistics.

* # * # 7780 # * # * - This code resets the following settings to the factory settings: - settings for your Google account stored on your smartphone; - data and settings of the system and applications; - downloaded applications. The code DOES NOT delete: - current system applications and applications that come with a smartphone; - data on the SD card (photo, video, etc.). PS: Before resetting, the smartphone will ask for confirmation, so until the very last moment you will have a chance to change your mind.

* 2767 * 3855 # - Think before entering this code. This code is used for factory formatting, that is, it starts the deletion of all files and settings, including those stored in the internal memory. He also reinstalls the firmware of the smartphone. PS: After entering the code, there is only one way back - quickly remove the battery and start data recovery via PC.

* # * # 34971539 # * # * - This code is used to obtain information about the phone’s camera. It shows the following four parameters:
  - Updating the camera firmware in the image (do not try to repeat this option);
  - Updating the camera firmware on the SD card;
  - Get the firmware version of the camera;
  - See how many times the firmware has been updated.
ATTENTION: Never use the first option, otherwise your phone camera will stop working, and you will have to carry the phone to a service center to reinstall the camera firmware.

* # * # 7594 # * # * - This code can be used to change the mode of the End / On Off button. By default, with a long press of the button, a screen will be displayed asking you to choose any option: “Switch to silent mode”, “Airplane mode” or “Turn off the smartphone”.
  You can change the proposed options using this code. For example, you can make the phone immediately turn off, without choosing the option you need from the menu.

* # * # 273283 * 255 * 663 282 * # * # * - The code opens the file copy screen on which you can make backups   own data (photo, audio, etc.)

* # * # 197328640 # * # * - This code can be used to enter the maintenance mode. You can run various tests and change settings in the service mode for WLAN, GPS and Bluetooth;

* # * # 232339 # * # * or * # * # 526 # * # * or * # * # 528 # * # * - WLAN (use the "Menu" button to start various tests);

* # * # 232338 # * # * - shows the MAC address of WiFi;

* # * # 1472365 # * # * - GPS test;

* # * # 1575 # * # * - Another GPS test;

* # * # 232331 # * # * - Bluetooth test;

* # * # 232337 # * # - Shows the address of the Bluetooth device;

Codes for running various factory tests:

* # * # 0283 # * # * - Batch Loopback;

* # * # 0 * # * # * - LCD-test;

* # * # 0673 # * # * or * # * # 0289 # * # * - Melody test;

* # * # 0842 # * # * - Device test (vibration test and backlight test);

* # * # 2663 # * # * - Touch screen version;

Many users Android smartphones   and tablets are not even aware of the existence of so-called engineering or service codes. Service codes on smartphones and on ordinary phones appeared much earlier than the first version of the Android OS was released. They are intended mainly for service center engineers and advanced users, so I want to immediately warn readers. If you do not know what this code is for, then you should not enter it, but if you nevertheless decided to enter the code, then you do this at your own peril and risk. It is worth considering before entering any code for Android, because This can lead to partial or complete data loss and damage the device itself. If you decide to use codes, let's look at each engineering code in more detail:

Learn IMEI:
*#06#

Details and Settings
*#*#4636#*#*

Voice Dialer Logging Enabled
*#*#8351#*#*

* # * # 4636 # * # *
  This code can be used to get interesting information about the phone and battery. It shows the following 4 menus on the screen:
Phone info
  Battery Information
  Battery Statistics
  Usage statistics

* # * # 7780 # * # *

This code can be used to reset the factory settings.
  Settings Google account   records are stored in the phone
  System and application and settings
  Downloaded apps

Does not change:
  Current system software   and applications included
  SD card files e.g. photos, music files, etc.

PS: As soon as you enter this code, you will see a screen asking you to click on the “Reset” button. Thus, you will be able to cancel the operation

* 2767 * 3855 #
  Think before you enter this code. This code is used to reset the factory settings. This code will delete all files and settings, including internal memory. He will also reinstall the phone firmware.

PS: Once you enter this code, it will not be possible to cancel the operation, except to remove the battery from the phone. So think twice before using this code.

* # * # 34971539 # * # *

This code is used to obtain information about the phone’s camera. It shows the following four parameters:
  Upgrading the camera firmware to the image (do not try to repeat this option)
  Updating the camera firmware on an SD card
  Get camera firmware version
  Get firmware update No.

ATTENTION: Never use the first option, otherwise your phone camera will stop working and you will have to carry the phone to a service center to reinstall the camera firmware.

* # * # 7594 # * # *
  This code can be used to change the “End / On Off” button mode. By default, with a long press of a button, you will be shown a screen asking you to select any option from Silent mode, the mode in the Airplane and turning off the power.

You can change the proposed options using this code. For example, you can make the phone immediately turn off, without choosing the option you need from the menu.

* # * # 273283 * 255 * 663 282 *#*#*
  This code opens the file manager, where you can backup your files, for example, Images, sounds, videos and voice memos.

* # * # 197328640 # * # *
  This code can be used to enter maintenance mode. You can run various tests and change the settings in the service mode for WLAN, GPS and Bluetooth

* # * # 232339 # * # *   or * # * # 526 # * # *   or * # * # 528 # * # *   - WLAN (use the "Menu" button to run various tests)

* # * # 232338 # * # *   - shows the MAC address of WiFi

* # * # 1472365 # * # *   - GPS test

* # * # 1575 # * # *   - Another GPS test

* # * # 232331 # * # *   - Bluetooth test

* # * # 232337 # * #   - Shows the address of the Bluetooth device

Codes for running various factory tests:

* # * # 0283 # * # *   - Batch Loopback

* # * # 0 *#*#*   - LCD test

* # * # 0673 # * # *   or * # * # 0289 # * # *   - melody test

* # * # 0842 # * # *   - Test device (vibration test and backlight test)

* # * # 2663 # * # *   - Touch screen version

* # * # 2664 # * # *   - Touch screen test

* # * # 0588 # * # * - Motion Sensor

* # * # 3264 # * # *   - RAM version

These are the basic codes for Android that an advanced smartphone user may need, I repeat once again, do not enter the codes if you are not sure of their purpose or you can live well without them, there’s nothing for you to do. But to solve some problems in the work of the android device, these codes are extremely useful.