Engineering menu - a section with advanced settings for "advanced" users. Allows you to carry out a test and check if all the functions of the smartphone are working - vibration, screen, speakers, network signal strength, etc. Today we will tell you how to enter this menu and what you can do in it.
Important! Do not take any action if you are not sure why they are needed and what consequences they can lead to. The information provided is for informational purposes only. You will be solely responsible for any adverse consequences.
The combinations for entering the engineering menu are the same for all Samsung smartphones. And the Galaxy S7 is no exception. You can get to the advanced settings section as follows:
If the above codes do not allow you to get into the engineering menu, try opening it as follows: simultaneously press the center button on the front panel and the volume up key. Without releasing the aforementioned buttons, press the on / off key of the smartphone.
In the section under study, it is possible to test the settings for the features of almost all functions and elements of the smartphone: from the battery and the touch screen to the volume level and network connections. At its core, it is possible to test absolutely every detail of the Galaxy S7 for performance.
We will not describe each section of the engineering menu and the available settings. Firstly, such a publication will be very voluminous. Secondly, if the user decides to enter the engineering menu, it is assumed that he initially knows why to do this and what changes need to be made to the settings to achieve the desired result. Without the relevant knowledge, you do not need to change anything in the engineering menu.
Service become useful in cases where the user needs to access some features that are not available in normal mode. By and large, they were invented to test the operation of the device, but we can also use them to call up various menus.
Advanced users deal with them all the time. For example, on some Galaxy devices, you can adjust the sound volume, find out hidden information about the phone, and much more. Now we will analyze the most useful service codes that are suitable for users of Samsung smartphones and tablets.
Denial of responsibility: this information is intended for advanced users. You should not try to change anything in the settings if you are not familiar with mobile devices. We are not responsible for any subsequent problems, including loss of data or damage to hardware.
I repeat that you should not touch those parameters, the meaning of which you do not know. You risk losing the functionality of your phone or valuable data.
We hope these system codes and key combinations will be useful to you, but, as for the 100th time, we want to warn you that you should use them with double caution.
Many devices running the Android OS are additionally equipped with a special environment - the engineering menu. With its help, the user has the opportunity to test all the sensors and modules of the mobile device, as well as adjust certain parameters of the gadget for himself for its more comfortable use. In Samsung phones, Engineering Mode is hidden in the system by default. And in different models, the entrance to it is performed differently. Yes, and the functionality of this area may also differ. Let's look at how to enter the engineering menu on the Samsung Galaxy A5, Galaxy S6, J3 and other smartphones from the Galaxy line.
The main purpose of Engineering Mode is to fully test mobile devices at the final stage of their production. The specified environment was originally developed for debuggers of smartphones and tablets, but today anyone can use it. The main thing is to know how to open the technical mode on Galax.
You can enter the engineering menu using a special combination (USSD code), which is written in the dial pad. At the same time, in different phone models, these commands may differ:
On other devices from the Galaxy line, you can use the service combinations *#*#4636#*#*, *#*#8255#*#* or *#*#3646633#*#*.
If you can’t open the engineering menu using the above commands, you can resort to one of the programs designed specifically for this purpose (EngineerMode, Mobileuncle Tools, Shortcut Master, etc.). To start the technical mode, just install and run one of the utilities. After that, you will automatically enter Engineering Mode.
All applications for opening the engineering menu work only with MTK processors (MT6573, MT6577, MT6589, etc.) and with some Exyon chips. For phones equipped with a Qualcomm CPU (for example, Samsung Galaxy A5), such software will be useless.
Having figured out how to enter the engineering menu on Samsung, let's look at its main features. A full-fledged Engineering Mode for MTK chips is equipped with a large number of tools with which you can make a complete diagnosis and fine-tune Samsung in many ways.
However, many smartphones have a stripped-down version of the technical mode, which somewhat reduces its functionality. And in mobile devices based on the Qualcomm processor, through the engineering menu, you can only view information about some modules and perform small tests of the main elements of the phone (display, modem, SIM cards and battery).
The Connectivity section is intended for diagnosing and configuring Wi-Fi, Bluetooth and FM wireless modules. It is not recommended to change anything here, as this can lead to the failure of the smartphone. 
The most popular engineering menu tab is Hardware Testing. This is where you can test the performance of the processor, battery, speakers, camera, display and GPS module. This area allows you to make a complete diagnosis of Samsung at the time of its purchase and identify possible product malfunctions. 
Dear friends, with this article we open a new section on the site dedicated to mobile devices. This section will publish articles about smartphones and tablets. Today we will talk about the popular smartphone Samsung J1. Despite the fact that the smartphone model is outdated, it still remains popular. Quite a few smartphone users are looking for information on how to enter the Samsung J1 engineering menu to change various parameters. In this article, we tried to give you detailed information about the engineering menu of the Samsung J1 smartphone.
| *#526#* *#528#* *#232339#* |
WiFi test |
| *#197328640#* | Maintenance menu, which runs various tests to test the device. |
| *#232331#* | Bluetooth test. |
| *#2664#* | Touch screen test |
| *#1575#* *#1472365#* |
GPS test |
| *#0842#* | Vibration and display backlight test. |
| *#0289#* *#0673#* |
Melody test |
| *#7594#* | Set how the device's power button works. When you hold the power button for a long time, a menu with options is shown (turn off, restart the device, turn on flight mode, etc.), the combination allows you to make changes to this menu. |
| *#232338#* | Shows the MAC address of the Wi-Fi module. |
| *#232337#* | Shows the MAC address of the Bluetooth module. |
| *#8350#* | Voice Dialer Logging Disabled - Disables logging of the last 20 voice calls. |
| *#8351#* | Voice Dialer Logging Enabled - turns on the recording of the last 20 voice calls (not conversations), i.e. logs your voice dialing voice and dialing history in LOG and WAV formats to the /data/data/com.android.voicedialer/app_logdir folder. |
| *#8255#* | Start monitoring GTalk. |
| *#4636#* | Obtaining information about the phone model, battery, usage statistics, testing, as well as other settings and system information. |
| *#3264#* | Shows the device's random access memory (RAM) version. |
| *#2663#* | Shows the touch screen version. |
| *#06# | Shows the IMEI number of the device. If the phone has two SIM cards, then two IMEI numbers will be displayed. |
| *#0283#* | Shows information about Loopback packet data. |
| *#34971539#* | Shows the camera firmware version and general information about the device's camera. |
| *#0588#* | Launch of the integrated motion sensor. |
| *#273283*255*663282*#* | Launching the built-in file manager, with which you can make backup copies of files. |
| *#1234#* *#12580*369# |
Firmware version information |
| *#9998*862# | Setting the voice encoder mode (normal, headphone or speakerphone) |
| *#2222# | Information about the firmware version of the operating system |
| #*5376# | Deleting all messages |
| #*2562# #*3876# #*3851# |
Normal restart of the device without deleting data |
| *#4636#* | Usage statistics, battery and Wi-Fi data |
| *#1111#* | Information about the FTA software version |
| *#2222#* | FTA hardware version data |
| *#7262626#* | GSM Signal Testing for 3G Models |
| *#44336#* | Data about CSC, PDA, build date of Samsung J100F Galaxy J1 model |
| *#2263# | Selecting Network Bands for 3G Models |
| *#0808# | Switching PC communication mode via USB connection. For a normal connection with a PC, install AP and MTR + ADB. |
| *#9900# | System data dump |
| *#7353# | Another test mode. Attention - “Melody” is a conversational speaker, so it is quiet, and “Speaker” is the rear, main speaker. |
| *2767*3855# | Full reset. Resetting the device firmware to the factory state erases all information. The operation cannot be undone. |
| *#7780#* | Resetting the device to factory settings, while resetting the settings will not affect installed applications and information on the memory card. |
Any TV, including those that do not belong to Smart TV devices, has a service menu that controls vital settings. In particular, the size of the image horizontally and vertically, brightness correction, as well as other parameters that can seriously affect the operation of the device. Therefore, if you do not understand how and what to do, it is better to leave this service altogether.
It is not surprising that the service menu on Samsung TVs is usually called extended, because it is used if you need to make serious changes to the operation of the TV itself. And to use it, you need to have a special remote control. Moreover, it is important that it be “native” to the TV, that is, it comes with it in the kit. Otherwise, even if you get into the menu, it will be difficult to be there, because the control is not reliable.
As already mentioned, the average user is not recommended to experiment with the service menu on Smart TV, including Samsung K series or any other series, even J. It's not that this is a whim of developers. On the contrary, users can press the wrong key on the remote control, and all settings will go wrong, which will lead to a complete loss of normal operation of expensive equipment.
But in the hands of a master who entered the service menu of TVs, it can turn a standard Smart TV into almost a home theater. However, sometimes these settings can be opened completely by accident, by involuntarily pressing some key combination. If this happens, then you can change:
In general, if the user needs to change some automatic settings, then this is done here.
In order to go to the service menu, you need to perform a few simple manipulations. But they are available only if there is a remote control. For some models, a standard remote control is suitable, like for Samsung 5, or you will have to use a special remote control that is not included in the kit, and you will need to buy it separately. But this is not a problem, because there are a lot of service stores.
It is important that before you finish working in the "Hotel Option" section, check the "OFF" mark to save some functions from failures. And also, since the user has entered the menu, and knows how to enter here at any time, you also need to understand how to exit and not damage the settings. This is done in this way:
