Service (they are also engineering, they are secret) codes are used for quick access to various functions, often even hidden. There are universal codes for Android, and there are those that are only available for certain device models.
Now I will talk about the most popular of them, thanks to which you can implement many system settings.
Popular secret codes for Android smartphones
Why are these codes called “secret”? Simply, they are not needed by most ordinary users, they are not published in instructions to smartphones. First of all, “secret codes” are intended for engineers and developers for conducting various tests.
To use any of the service codes, you need to enter it in the dialer. On the tablets you will have to download a third-party application for making calls – enter the query “Dialer” in the Google Play search and load the “caller” you like.
- * # 06 # – information about IMEI smartphone
- * # * # 4636 # * # * – information about Wi-Fi, battery and usage statistics
- * # * # 8255 # * # * – Testing the Google Talk service
- * # * # 7594 # * # * – if you enter this combination, after that, when you press the power button, the smartphone will immediately turn off, without the menu offer
- * 44336 # * # * – information about PDA, CSC, build time and other data about the smartphone
- * 232338 # * # * – MAC address of Wi-Fi
- * # * # 7780 # * # * – Instant Reset to the factory settings (Hard Reset). Deletes only applications
- * 2767 * 3855 # – instant reset to factory settings, but unlike the previous way, Android is completely reinstalled
- * # * # 1234 # * # * or * # 12580 * 369 # – information about the firmware of the device
- * # * # 1111 # * # * – information about the FTA software version
- * 2222 # * # * – information about FTA hardware version
- * 0283 # * # * – Loopback test
- * # * # 0 * # * # * – screen test
- * # 0 * # – testing of various components: screen, camera, speakers, vibration, microphone and other
- * # * # 0673 # * # * or * # * # 0289 # * # * – test the audio
- * 084 # * # * – vibration and backlight test
- 232339 # * # * or * # * # 526 # * # * – test the wireless network
- * * * * * 1472365 # * # * – a GPS test
- * # * # 1575 # * # * – a detailed GPS test
- * * * * * * Bluetooth test
- * 232337 # * # * – show the Bluetooth address
- * 2663 # * # * – the version of the touch screen
- * 2664 # * # * – Touch Screen Testing
- * # * # 0588 # * # * – Test the motion sensor
- * 7262626 # * # * – GSM signal test
- * # 197328640 # – switch to the service mode
- * 3264 # * # * – RAM memory version
- * # * # 8351 # * # * – activating the voice registration mode
- * # 8350 # * # * – turn off voice registration mode
- # * 5376 # – delete all SMS
- * # 2222 # – Android firmware version
- # * 2562 #, # * 3851 #, # * 3876 # – restart the smartphone, tablet
- * # 34971539 # – full information about the cameras and updating their firmware
- * * * * 273283 * 255 * 663282 * – * – fast backup of media files
- * # * # 4636 # * # * – secret menu for Motorola devices
- ** 05 *** # – Unlock the PUK on Sony
- 3845 # * 855 # – service menu on the LG G3
- * # 0011 # – service menu on the 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 # – technical details of the network status (for HTC)
- ## 7738 # – protocol revision (for HTC)
In principle, these are the most basic and universal service (secret) codes for tablets and smartphones on Android, but all manufacturers add support for their own, so if you are interested in codes for a particular device, download the application Secret Codes . It will be discussed below.
Android Service Codes in Secret Codes
The Secret Codes application will scan the system for engineering codes and display the result in a list. You just need to click on the code of interest and you will go to the desired option.
Unfortunately, this method has a minus: on some devices, the application does not find a single service code, and on some finds not all. But on the devices, I tested everything was fine, and the reviews on Google Play are almost all positive.