Service (they are engineering, they are also secret) codes are used to quick access to various functions, often even hidden ones. There are universal codes for Android, and there are those that are available only for certain device models.
Not so long ago, I published an article in which I said,. To do this, you could use special software or use one of the secret codes. Now I will talk about the most popular of them, thanks to which you can carry out many system settings.
Popular secret codes for Android smartphones
Why are these codes called "secret"? It's just that most ordinary users do not need them, they are not published in the instructions for smartphones. First of all, "secret codes" are intended for engineers and developers to conduct various tests.
To use any of the service codes, you need to enter it in the dialer. On tablets you will have to download third party application to make calls - enter in Google search Play the request "Dialer" and download your favorite "dialer".
- *#06# - information about the IMEI of the smartphone
- *#*#4636#*#* - information about Wi-Fi, battery and usage statistics
- *#*#3646633#*#* or *#*#83781#*#* - entrance to engineering menu on smartphones with MTK processor(through it you can)
- *#*#8255#*#* - testing Google service talk
- *#*#7594#*#* - if you enter this combination, after that, when you press the power button, the smartphone will immediately turn off, without offering a menu
- *#*#44336#*#* - information about PDA, CSC, build time and other data about the smartphone
- *#*#232338#*#* - MAC address WiFi
- *#*#7780#*#* - instant reset to factory settings ( hard reset). Removes only applications
- *2767*3855# - instant factory reset, but unlike the previous one android way completely reinstalled
- *#*#1234#*#* or *#12580*369# - information about device firmware
- *#*#1111#*#* - information about FTA software version
- *#*#2222#*#* - information about FTA hardware version
- *#*#0283#*#* - Loopback test
- *#*#0*#*#* - screen test
- *#0*# - testing various components: screen, camera, speakers, vibration, microphone and others
- *#*#0673#*#* or *#*#0289#*#* - audio test
- *#*#0842#*#* - vibration and backlight test
- *#*#232339#*#* or *#*#526#*#* - wireless network test
- *#*#1472365#*#* - GPS test
- *#*#1575#*#* - detailed GPS test
- *#*#232331#*#* - Bluetooth test
- *#*#232337#*#* - show bluetooth address
- *#*#2663#*#* - touch screen version
- *#*#2664#*#* - touch screen testing
- *#*#0588#*#* - motion sensor testing
- *#*#7262626#*#* - GSM signal test
- *#197328640# - switch to service mode
- *#*#3264#*#* - RAM version
- *#*#8351#*#* - activation of the voice dialing registration mode
- *#*#8350#*#* - turn off the voice dialing registration mode
- #*5376# - delete all SMS
- *#2222# - Android firmware version
- #*2562#, #*3851#, #*3876# - reboot smartphone, tablet
- *#34971539# - full information about cameras and updating their firmware
- *#*#273283*255*663282*#*#* - quick creation backup media files
- *#*#4636#*#* - secret menu for Motorola devices
- **05***# - Unlock PUK on Sony
- 3845#*855# - service menu on LG G3
- *#0011# - service menu on samsung galaxy S4
- ##778 (+ call button) - displays the EPST menu (for Samsung)
- ##3424# - diagnostic mode (for HTC)
- ##3282# - EPST (for HTC)
- ##8626337# - VOCODER (for HTC)
- ##33284# - network status technical data (for HTC)
- ##7738# - protocol revision (for HTC)
In principle, these are the most basic and universal service (secret) codes for Android tablets and smartphones, but all manufacturers add support for their own, so if you are interested in codes for a particular device, download the application. It will be discussed below.
Android service codes in the Secret Codes app
The Secret Codes app will scan the system for engineering codes and list the result. You just need to click on the code of interest and you will go to the desired option.
Unfortunately, this method has a disadvantage: on some devices, the application does not find a single service code, and on some it does not find everything. But on the devices I tested, everything was fine, and the reviews in Google Play almost all are positive.
In many of our articles you will see text like: Win + R .
This text indicates that you need to press the combination of the key with the Windows logo and the letter R.
Keyboard shortcuts are combinations of two or more keys that can be pressed to perform tasks that usually require the use of a mouse or other pointing device.
This list is more complete, most of the keyboard shortcuts are valid for other operating systems of the Windows family.
The following are the most commonly used keyboard shortcuts.
Keyboard shortcuts for working with text.
| Keys | Action |
|---|---|
| Ctrl+A | Select all text. |
| ctrl+c (or Ctrl+Insert) | Copy the selected text fragment. |
| Ctrl + X | Cut the selected text fragment. |
| Ctrl+V (or? Shift+Insert) | Paste the selected text fragment. |
| ctrl + ? | Move the cursor to the beginning of the previous word. |
| ctrl + ? | Move the cursor to the beginning of the next word. |
| ctrl + ? | Move the cursor to the beginning of the previous paragraph. |
| ctrl + ? | Move the cursor to the beginning of the next paragraph. |
| ? Shift+? | Select text forward character by character. |
| ? Shift+? | Select text backward character by character. |
| ctrl + ? Shift+? | Select text from the cursor position to the beginning of the next word. |
| ctrl + ? Shift+? | Select text from the cursor position to the beginning of the previous word. |
| ? Shift + Home | Select text from the cursor position to the beginning of the line. |
| ? Shift + End | Select text from the cursor position to the end of the line. |
| Alt left + ? Shift | Switch input language if multiple input languages are used. |
| ctrl + ? Shift | Switch keyboard layout if multiple keyboard layouts are used. |
| Left Ctrl + ? Shift Ctrl right + ? Shift | Changing the reading direction of text for right-to-left languages. |
Keyboard shortcuts for working with windows and the desktop.
| Keys | Action |
|---|---|
| F5 (or Ctrl+R) | Refreshes the active window or desktop (if active). |
| F6 or Tab? | Cycle through items in a window or on the desktop. |
| Alt + Esc | Cycles through items in the order they were opened. |
| Alt + Tab ? | Cycle through windows in normal mode. |
| Ctrl + Alt + Tab ? | Open a window to switch between windows normally. Use the arrow keys to navigate between them. |
| Win + Tab ? | Cycle through elements (windows, programs) in Flip3D mode. |
| Ctrl + Win + Tab ? | Open window to switch between windows in Flip3D mode. Use the arrow keys to navigate between them. |
| Ctrl + mouse wheel (up/down) on the desktop | Increase / Reduce the size of icons on the desktop. |
| Holding? Shift+? | Highlight multiple items in a window or desktop, including the current one. |
| Holding? Shift+? | Highlight down multiple items in a window or on the desktop, including the current one. |
| Holding Ctrl + Space | Select any multiple individual items in a window or on the desktop. To navigate, use the arrow keys. |
| Ctrl+A | Select all items in a window or on the desktop. |
| ctrl+c (or Ctrl+Insert) | Copy selected elements. |
| Ctrl + X | Cutting selected elements. |
| Ctrl+V (or? Shift+Insert) | Paste selected elements. |
| Alt+Enter ? | Opening the properties dialog box for the selected file, folder. |
| Alt + Space | Display context menu active window. |
| Alt+F4 | Closes the current item or exits the active program. |
| ? Shift+F10 | Opens the context menu for the selected element. |
| win+? | Expand the window to full screen. |
| win+? Shift+? | Stretch the window to the top and bottom of the screen. |
| win+? | Minimize to a window, or minimize to the taskbar. |
| win+? | Maximize and dock the window to the left edge of the screen. |
| win+? | Maximize and dock the window to the right edge of the screen. |
| Win+M | Minimize all rollable windows. Non-collapsible windows (For example: File Properties) will remain on the screen. |
| win+? Shift+M | Restore all minimized windows. |
| Win+D | Show desktop / Return to program. Minimizes and restores everything, including non-minimisable windows. |
| Win+G | Cycle through gadgets. |
| Windows + Home | Minimize/Restore all windows except the active one. |
| Win + Space | Show desktop without minimizing windows. |
Keyboard shortcuts for working with multiple monitors.
Keyboard shortcuts for working with the Taskbar.
| Keys | Action |
|---|---|
| ? Shift+click the icon on the taskbar | Opening a program or quickly opening another instance of a program. |
| ? Shift+click right click click on the icon on the taskbar | Display the menu window for the program. |
| ? Shift+right-click on a grouped taskbar icon | Displays the menu window for the group. |
| Ctrl+click a grouped taskbar icon | Cycle through group windows. |
| ctrl + ? Shift+click the icon on the taskbar | Opening the program as an administrator. |
| Ctrl + Tab ? | Switch between thumbnails in the same group. |
| Win + Digit | Run / Switch to the program using the location of its icon on the taskbar. The numbers from 1 to 9 are serial number applications on the taskbar, counting from the left (0 is the tenth application). |
| ? Shift + Win + Number | Launching a new instance of the program using the location of its icon on the taskbar. |
| Ctrl + Win + Number | Switch between program windows, starting with the last active one, using the location of its icon on the taskbar. |
| Alt + Win + Number | Open the Jump List for a program using the location of its icon on the taskbar. |
| Win+T | Cycle through icons on the taskbar. (From left to right) |
| win+? Shift+T | Cycle through icons on the taskbar. (From right to left) |
| Ctrl+Win+B | Switch to the program that displays the message in the notification area. |
| Win (or Ctrl + Esc) | Open or close the Start menu. |
| Win+R | Opens the Run dialog box. |
| ctrl + ? Shift+Enter ? | Run the program highlighted in the Start menu as an administrator. |
Keyboard shortcuts for working in Windows Explorer.
| Keys | Action |
|---|---|
| Win+E | Launch Windows Explorer. |
| Alt+? | View the previous folder. |
| Alt+? | View next folder. |
| Alt+? | Browse the folder one level up. |
| Alt+D | Choice address bar. |
| Alt+P | Viewport display. |
| Ctrl+E | Selecting a search field. |
| ctrl + ? Shift+E | Displays all folders in which the selected folder is nested. |
| ctrl+f | Selecting a search field. |
| Ctrl + N | Opening a new window. |
| ctrl + ? Shift+N | Create a new folder. |
| Ctrl+W | Close the current window. |
| Ctrl + . | Rotate the image clockwise. |
| ctrl + , | Rotate the image counterclockwise. |
| Ctrl + mouse scroll wheel | Resizing and appearance file and folder icons. |
| Home | Transition to top position active window. |
| end | Jump to the bottom position of the active window. |
| Delete (or Ctrl+D) | Removing the selected item to the Recycle Bin. |
| ? Shift+Delete | Deleting the selected item without placing it in the Trash. |
| F2 | Rename the selected element. |
| F4 | Display a list of previous locations for the address bar in Windows Explorer. |
| F11 | Maximize the active window to full screen / Minimize back. |
| ? | Collapse the selection (if expanded) or select the parent folder. |
| ? | Display the selected item (if it is collapsed) or highlight the first subfolder. |
| ? backspace | View the previous folder. |
| Num Lock + * on numeric keypad | Displays all folders nested in the selected folder. |
| Num Lock + + on the numeric keypad | Display the contents of the selected folder. |
| Num Lock + - on the numeric keypad | Collapse the selected folder. |
Keyboard shortcuts for the dialog box.
Keyboard shortcuts for working with Windows Help.
| Keys | Action |
|---|---|
| F1 | Opens help for the current item. |
| Win+F1 | Launch the built-in Windows dialog: Help and Support. |
| F3 | Move the cursor to the "Search" field. |
| F10 | Go to the "Options" menu. |
| Alt+A | Go to the user support page. |
| Alt+C | Display title. |
| Alt + N | Go to the "Connection Options" menu. |
| Alt+? | Return to the previous viewed section. |
| Alt+? | Move to the next (previously viewed) section. |
| Alt+Home | Go to homepage help and support. |
| Home | Move to the beginning of a section. |
| end | Move to the end of a section. |
| ctrl+f | Search in the current section. |
| ctrl+p | Print section. |
Keyboard shortcuts for working with the Ease of Access Center.
| Keys | Action |
|---|---|
| Win+U | Launch Ease of Access Center. |
| Num Lock (hold for more than five seconds) | Enable / Disable the sound mode when pressing the keys Caps Lock , Num Lock and Scroll lock. |
| ? Shift (press five times) | Enable / Disable Sticky Keys mode (allows you to use the keys? Shift , Ctrl , Alt , Win by pressing them individually). |
| ? Shift right (hold for more than eight seconds) | Enable / Disable input filtering (allows you to ignore short and repeated keystrokes). |
| Alt left + ? Left Shift + PrtScr (or Print screen) | Enable/Disable high contrast mode. |
| Alt left + ? Shift Left + Num Lock (or Num) | Enable / Disable keyboard mouse control. |
Keyboard shortcuts for working with Magnifier.
| Keys | Action |
|---|---|
| win++ | Launching the Magnifier program. Zoom in. |
| Win+- | Zoom out. |
| Win + Esc | Close the Magnifier app. |
| Ctrl+Alt+D | Switch to the "Pinned" mode (the enlarged area is shown in a separate docked window). |
| Ctrl+Alt+F | Switch to Full Screen mode (enlarges the entire screen). |
| Ctrl+Alt+L | Switch to Zoom mode (enlarges the area around the mouse pointer). |
| Ctrl+Alt+R | Change the size of a window that displays an enlarged area of the screen. |
| Ctrl + Alt + Space | Desktop preview in full screen mode. |
| Ctrl+Alt+I | Color inversion. |
| Ctrl + Alt + ? | Attaches a window with an enlarged area to the top edge of the screen. ("Pinned") Move the window with the enlarged area up. ("Increase") Moving up in the enlarged area. ("Full screen") |
| Ctrl + Alt + ? | Attaches a window with an enlarged area to the bottom edge of the screen. ("Pinned") Move the window with the enlarged area down. ("Increase") Moving down the enlarged area. ("Full screen") |
| Ctrl + Alt + ? | Attaches a window with an enlarged area to the left edge of the screen. ("Pinned") Move the window with the enlarged area to the left. ("Increase") Move around the enlarged area to the left. ("Full screen") |
| Ctrl + Alt + ? | Attaches a window with an enlarged area to the right edge of the screen. ("Pinned") Move the window with the enlarged area to the right. ("Increase") Move over the enlarged area to the right. ("Full screen") |
Other keyboard shortcuts.
| Keys | Action |
|---|---|
| Enter? | Replaces mouse clicks to launch an application, click a button, or select an item from a menu. |
| Esc | Identical to clicking the Cancel button in the dialog box. |
| F3 (or Win+F) | Opening the built-in dialog Windows windows to search for a file or folder. |
| ctrl+f | Opens a search window or navigates to a search field in the active window. |
| Ctrl+Win+F | Search for a computer from a domain (when online). |
| ctrl + ? Shift + Esc | Launching the Task Manager. |
| Ctrl+Alt+Delete | Call window Windows Security(Includes Lock Computer, Change User, Log Out, Change Password, Start Task Manager buttons). |
| Win+L | Locking the computer or switching users. |
| Windows + X | Launch Windows Mobility Center. |
| win+pause Break | Launch the System item from the Control Panel (Properties item when you right-click on Computer in the Start menu). |
| Holding? Shift when inserting a CD | Prevent automatic CD playback. |
| Ctrl + Tab ? | Switching between elements (tabs, windows, documents) in programs that allow multiple documents to be open at the same time. |
| Ctrl+F4 | Closes the active document (in programs that allow multiple documents to be open at the same time). |
| Alt+Enter ? | Deploy an active program to Full Screen/ Minimize to window. |
| Alt + underlined letter | Display the corresponding menu. Execute a menu command (or other underlined command). |
| F10 | Activate the menu bar of the current program. |
| ? | Opens the next menu on the left or closes a submenu. |
| ? | Open the next menu on the right or open a submenu. |
| Ctrl + N | Create… |
| Ctrl+O | Open… |
| ctrl+s | Save your changes. |
| Ctrl + Z | Cancel action. |
| ctrl+y ctrl + ? Shift+Z | Repeat action. |
Material prepared: Nizaury
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Examples of engineering codes and combinations for testing components, communications and other modules.
All mobile phones support USSD codes, thanks to which the user can receive background information or connect additional features. For this you need to open standard application to dial a number, enter a certain combination of characters and wait for the dialog box to be displayed. Usually service codes work on all smartphones with an operating system. Android system, regardless of manufacturer. Today we will consider a list of the most useful and relevant combinations.
Check IMEI
Combination *#06# allows you to check the unique an identification number mobile phone. This feature is useful for users to find out detailed information about the manufacturer and the approximate release date of the device. Also IMEI is sometimes needed for cooperation with law enforcement - if the phone has been stolen or lost, ID number specialists.
Smartphone testing
Service code *#0*# is designed to check the status of all components of the mobile device. The combination allows you to test touch screen, speakers, digital camera and vibration. The code is useful for users who plan to purchase a phone from their hands. It allows you to make sure that the device is working properly and performs all the necessary functions. Usually this check takes no more than one minute, but, unfortunately, the combination *#0*# does not work on all smartphones.
To check a used phone before buying, it is better to study.
Checking phone status
The code will allow you to see the current status of the radio module, built-in battery and usage statistics. This combination helps to detect problems related to the operation of internal components. For example, if the device refuses to make outgoing calls or receive calls, it is enough to dial this code and check the network status, in particular,.
Quick reset
Combination *#*#7780#*#* helps to instantly return to the factory settings. Of course, you can perform such a procedure, but sometimes you have to use a service code. Its set leads to complete removal applications and all data, so experimenting is not recommended.
GPS testing
If the user notices errors when using satellite navigation, it is recommended to dial the code *#*#1575#*#* for check . The result will be detailed information about the state of this component. Of course, only specialists can solve the problem. service center, but the combination can be useful and ordinary users who want to find the cause of the problem.
Deleting messages
The code #*5376# allows you to quickly delete all SMS messages stored in the device's memory. The combination helps to clear the phone of spam - it is much more convenient to type a short sequence of characters than manually deleting each SMS. The main thing is to first make sure that the Inbox folder does not contain important letters.
Firmware version
Short code *#2222# is designed to display the version of the operating system installed on the phone. It helps to make sure that the device has up-to-date software.
Checking Call Forwarding
Each owner android phone can dial a combination *#21# to check the fact of call forwarding. If nothing is displayed as a result of typing characters, redirection is most likely disabled. If a phone number is displayed, then voice calls are being redirected to it.
Deactivating the function is quite simple - you need to dial ##002# and wait for confirmation notification. Given code especially relevant for travelers traveling to another country. The combination will disable call forwarding to voicemail and save money for using roaming.
Phone reboot
The code #*2562# allows you to quickly restart your mobile device. This combination is useful if the physical keys refuse to function. The code is only suitable for some phone manufacturers, so on other models you need to enter a sequence of characters #*3852# . Immediately after entering the numbers, the smartphone will automatically turn off and turn on again.
GSM signal test
Results
There are a large number designed to display system information and manage the hidden features of the operating system. In order not to forget the listed combinations, you can write to the memory of your mobile device. The described codes will help you quickly check the performance of smartphone components, test the operation of communication modules, or return to factory settings to correct errors.
The term " secret codes for Android" refers to such combinations of characters that were originally intended for testing devices on which this operating system is installed.
With their help, developers check phones and tablets before they are sent for sale. And their total number reaches several tens.
The introduction of a certain sequence allows you to get data or perform actions that are not available to ordinary users. For example, find out the IMEI ID, reset the system to factory settings, or check the operation individual modules.
Features of "secret" ciphers
Many users who are faced with the need to use such commands may wonder why they are secret.
First of all, combinations of symbols and numbers received such a name due to the fact that most owners of gadgets on this OS do not need them. And there is no mention of these commands in the instructions.
To use any of them, you need to enter the "Phone" application in the dialer (green or blue handset on the main screen).
Tablets without a 3G module do not have this feature by default. And in order to run the codes, the user must download special application, finding it in PlayMarket for the query "Dialer".
Combinations for any Android gadget
Information sequences allow you to obtain data about different characteristics device and its individual elements:
- *#06# - about the IMEI number;
- *#*#4636#*#* - about the battery and the Wi-Fi network;
- *#*#44336#*#* - about the firmware, including the CSC number and build date;
- *#*#232338#*#* – about the wireless network address;
- *#34971539# - about the gadget's cameras;
- *#*#1234#*#* (although *#2222# works much more often) - about the firmware.
By entering *#*#1111#*#*, you can get information about the software version on the screen.
The introduction *#*#2222#*#* shows data about the board of a smartphone or tablet.
Information about the sensor version will be shown by the code *#*#2663#*#*, about RAM - *#*#3264#*#*, and Bluetooth address data - *#*#232337#*#*.
Commands for Verification and Tests
To test the device, there is a group:
- verification Google services Talk provides the sequence *#*#8255#*#*;
- to check the operation of the display - *#*#0*#*#*;
- for testing different parts (from camera to microphone) – *#0*#;
- for the audio test - two at once: *#*#0673#*#* and *#*#0289#*#*.
You can check the operation of the backlight and vibration by entering the combination *#*#0842#*#*.
The Wi-Fi wireless network is tested using the command *#*#232339#*#* and additional *#*#526#*#*.
Check GPS sensor are performed by sending the commands *#*#1472365#*#* (for a normal test) or *#*#1575#*#*.
The Bluetooth network is checked via *#*#232331#*#*.
Several Yet useful commands allow you to test the performance of the screen (*#*#2664#*#*), motion detectors (*#*#0588#*#*) and the GSM module (*#*#7262626#*#*). And entering * # 197328640 # provides a transition to the service mode.
Dangerous Combinations
There are several options, by entering which, you can make serious changes to the system without the ability to return to the initial state. These include, for example, *#*#7780#*#* and *2767*3855#.
The first one provides a reset of all settings and removal of applications installed by the user, the second command leads to complete reinstallation systems.
The combination *#*#7594#*#* allows you to get rid of the shutdown menu - when you press the corresponding button, the tablet or smartphone will automatically turn off without asking the user anything.
Selecting the code *#*#8351#*#* is needed to enable voice dialing registration, and *#*#8350#*#* to disable this mode. The sequence #*5376# is used to delete messages, and several combinations for Android like #*3876#, #*3851# and #*2562# restart the gadget.
Special codes for products of individual manufacturers
There are several combinations that are only suitable for certain models or brands of gadgets. They can be summarized in a small table.
In addition to these, there are other commands. A special Secret Codes application from PlayMarket will help you find them. With it, you can even find those that are not on the list.
You should know: Not all of the sequences, even universal ones, will work on every smartphone. The use of a secret combination can be limited by root rights or a self-reinstalled operating system, taken not from the official site, but from third-party sources.
Results
Most of them should be used very carefully. Especially, those of them that not only give out some information, but also make changes to operating system or firmware. When used correctly, engineering combinations can be quite useful.
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.
How to enter a service code?
Everything is very simple. Open the dialer and enter the numbers with the characters that correspond to the menu you want to execute. After entering the last character, the menu should automatically start, no additional actions need to be taken.
Denial of responsibility: this information is intended experienced users. Do 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.
All service codes for Samsung Galaxy smartphones and tablets
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.
Useful Keyboard Shortcuts for Samsung Galaxy
- Enter the recovery: in the off state of the phone, hold down the volume buttons up, Home and power
- Bootloader / fastboot mode: you also need to turn off the phone, and then hold down the volume buttons, Home and power
- Take a screenshot: on the desired screen, hold down the volume up, power and, of course, the Home button.
- Force the phone to go into the off state: simultaneously hold down the volume down and power buttons
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.