Engineering codes for Android smartphones

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

* # 06 # - Find out 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 batteries;

- Battery statistics;

- Usage statistics.

* # * # 7780 # * # * - This code resets the following settings to factory defaults:

- your Google account settings stored on your smartphone;

- data and settings of the system and applications;

- downloaded applications.

The code does NOT remove:

- current system applications and applications supplied with the smartphone;

- data on the SD card (photo, video, etc.).

PS: Before resetting the settings, 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 smartphone's firmware.

PS: After entering the code, there is only one way back - to quickly remove the battery and start data recovery via PC.

* # * # 34971539 # * # * - This code is used to get information about the phone camera. It shows the following four parameters:

- Updating the camera firmware to the image (do not try this option);

- Update camera firmware on 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 take your phone to a service center to reinstall the camera firmware.

* # * # 7594 # * # * - This code can be used to change the mode of the "Hang up / On / Off" button. By default, when you press the button for a long time, a screen will be displayed with a proposal to choose any option: "Switch to silent mode", "Airplane mode" or "Turn off smartphone".

You can change the suggested options using this code. For example, you can make the phone turn off immediately without selecting the desired option from the menu.

* # * # 273283 * 255 * 663 282 * # * # * - The code opens the file copy screen, where you can make backup copies of your data (photo, audio, etc.)

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

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

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

* # * # 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 # * # * - Test melody;

* # * # 0842 # * # * - Device test (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. We repeat once again: do not enter codes if you are not sure of their purpose! But for solving some problems in the operation of the device on Android, these codes are extremely useful.