One of the most common practices among software developers is to leave secret codes inside the operating systems, so that they can repair or access advanced settings, which can be used to make tests or checks of various types. On an Android smartphone these "secret codes" can be entered on the phone dialer, with numerical sequences mixed with symbols such as # and * that can work according to the model and version of Android. For the occasion, we decided to collect the numeric secret codes of the most popular smartphone manufacturers, Samsung and Huawei, in addition to the generic codes, which can work on any Android device.
The options provided can be very powerful, to the point of damaging the device: we take no responsibility for any problems resulting from the incorrect use of these codes.
READ ALSO: What can be changed in the Android Developer Options
Secret codes for Samsung devices
If we have a Samsung smartphone or tablet (for example the new Galaxy S10 or the latest generation Notes) we can try one of the following secret codes, so as to access specific menus for this manufacturer. Not all codes work or may only work on certain devices: the only way to know for sure is to try them all.- Enter the light sensor mode with this code - * # 0589 #
- Proximity sensor - * # 0588 #
- Access all Wi-Fi Mac addresses - * # * # 232338 # * # *
- For the WLAN network - * # * # 526 # * # *
- To test the GPS - * # * # 1472365 # * # *
- Another code to test GPS - * # * # 1575 # * # *
- Diagnostic configuration - * # 9090 #
- To solve Bluetooth problems - * # * # 232331 # * # *
- Enter Bluetooth test mode - # * 3888 #
- Audio Testing - * # * # 0673 # * # *
- Test your device screen - # * # 0 * # * # *
- Check backlight and vibration - * # * # 0842 # * # *
- General test mode - * # 0 * #
- Audible - * # 0673 #
- Universal Test Menu - * # 8999 * 8378 #
- Live Mobile Time Testing - * # 0782 #
- Vibration motor test - * # 0842 #
- Get your device information - * # * # 4636 # * # *
- See information on H / W, PDA and RFCallDate on your mobile phone - * # * # 4986 * 2650468 # * # *
- See the firmware version - * # * # 1111 # * # *
- See the version and type of PDA - * # * # 1234 # * # *
- See hardware version Firmware - * # * # 2222 # * # *
- View the ROM sales code - * # * # 44336 # * # *
- Restore user data and change sales codes - * # 272 * IMEI #
- Displays the status information for the GSM network - * # 0011 #
- Check hardware and software information - * # 12580 * 369 #
- Check all hardware and software versions of the device - # * # 8377466 #
- Get encryption information and enter service mode - * # 32489 #
- USB service - # 0808 #
- Default service mode - * # 197328640 #
- USB service mode - * # 9090 #
- WLAN mode Engineering service mode - * # 526 #
- TSK / TSP firmware update - * # 2663 #
- Enter the camera firmware menu - * # 7412365 #
- Camera firmware update - * # 34971539 #
- View the sale of SMS / PCODE - * 2767 * 4387264636 #
- OTA menu update - # 8736364 #
Secret codes for Huawei devices
If we use a Huawei device (for example a P20 or a P30), we can try one of the following codes, so as to access the secret menus provided for this very famous manufacturer.NOTE: Some codes do not work on Huawei's standard numeric keypad and a different app must be installed to make a phone call.
- Phone, usage and battery information - * # * # 4636 # * # *
- IMEI number - * # 06 #
- Service menu - * # 0 * #
- Camera details - * # * # 34971539 # * # *
- Media backup - * # * # 273282 * 255 * 663282 * # * # *
- Wi-Fi test - * # * # 232339 # * # *
- Enable Test mode - * # * # 197328640 # * # *
- Full hardware information - * # 12580 * 369 #
- Diagnostic configuration - * # 9090 #
- HSDPA control menu - * # 301279 #
- Check phone lock status - * # 7465625 #
- Show Wi-Fi Mac Address - * # * # 232338 # * # *
- GPS test - * # * # 1472365 # * # * or * # * # 1575 # * # *
- Bluetooth test - * # * # 232331 # * # *
- Touchscreen test - * # * # 2664 # * # *
Android Secret Codes (generic)
In this chapter of the guide we will instead show you the official secret codes for any Android device (including the Samsung and Huawei that we have already talked about), so that you can also access the secret menus on Xiaomi, LG, Motorola and all the other known manufacturers. . All of these codes are integrated into the Android operating system as designed by Google, but many manufacturers may disable or modify some codes for security reasons.- Show IMEI number - * # 06 #
- Test menu - * # * 4636 # * # *
- Factory data reset - * # * # 7780 # * # *
- Full format - * 2767 * 3855 #
- Firmware information - * # * # 34971539 # * # *
- Power off and power on options - * # * # 7594 # * # *
- Media backup - * # * # 273283 * 255 * 663282 * # * # *
- Android service mode - * # * # 197328640 # * # *
- Wi-Fi test - * # * # 232339 # * # *
- Show WiFi MAC address - * # * # 232338 # * # *
- GPS test - * # * # 1472365 # * # *
- Bluetooth test - * # * # 232331 # * # *
- Bluetooth device address - * # * # 232337 # * # *
- Performs a loopback packet test - * # * # 0283 # * # *
- Screen test - * # * # 0 * # * # *
- Audio Test - * # * # 0289 # * # *
- Vibration and light test - * # * # 0842 # * # *
- Proximity sensor test - * # * # 0588 # * # *
- RAM version - * # * # 3264 # * # *
- Performs a signal test - * # * # 7262626 # * # *
- Enable test mode - * # * # 19732840 # * # *
- Activate call log mode - * # * # 8351 # * # *
- Disable call log mode - * # * # 8350 # * # *
Conclusions
As we have seen, there are really many secret codes for Android, each one able to open a menu reserved for developers, a menu to perform tests on the system and menus full of information on the hardware and software of our device.Always to stay on the subject of "secret codes", in other guides we talked about the Codes to deactivate the answering machine, the Codes for call forwarding and finally the codes for making calls and sending SMS anonymously .
