Secret Diagnostic Codes for Android Phones
Warning: These codes are intended for testing and diagnostics. Use with caution. Some may erase data or alter system settings permanently. Always back up your device first.
System & Reset
*2767*3855#
Performs a full factory reset.
All data will be lost. Use only if necessary.
*#9900#
System dump mode to clear temp files and logs.
Helps recover storage space and boost performance.
*#*#4636#*#*
Shows detailed phone, battery, and usage stats.
Useful for advanced users or troubleshooting battery drain.
Network & Connectivity
*#0808#
USB configuration settings.
Used by developers to switch between MTP, PTP, etc.
*#0011#
GSM network status and signal data.
Helpful for identifying weak mobile network signals.
*#*#232339#*#*
Wireless LAN test.
Displays Wi-Fi test logs and connection info.
*#*#232338#*#*
Shows the MAC address of your device’s Wi-Fi module.
Required in network troubleshooting or device registration.
*#*#7262626#*#*
Field Test mode for mobile signal monitoring.
Technicians use this during site testing.
Hardware & Device Info
*#06#
Displays your IMEI number.
Important for unlocking, security, and identification.
*#12580*369#
Hardware and firmware details.
Includes version numbers for system components.
*#1111#
FTA software version.
Used in official service modes.
*#*#2222#*#*
FTA hardware version.
Helpful when comparing repair compatibility.
*#*#3264#*#*
Displays RAM info.
Also known as ROM version, relevant for firmware updates.
Multimedia & Camera
*#*#34971539#*#*
Advanced camera firmware settings.
Do not modify unless you know what you’re doing — risk of camera failure.
*#*#0289#*#*
Audio test tones (speaker test).
Ensures left/right and speaker sound output are functional.
*#*#0283#*#*
Loopback test for mic and speaker.
Checks if your microphone and speaker work correctly together.
*#*#273283*255*663282*#*#*
Opens media backup menu.
Allows selective backup of images, audio, and video.
Testing & Diagnostics
*#0*#
Full device diagnostics menu.
Includes screen, touch, speaker, camera, sensor tests.
*#*#2664#*#*
Touchscreen precision test.
Trace lines to check dead zones.
*#*#1472365#*#*
GPS testing screen.
Useful to check satellite lock issues.
*#*#0588#*#*
Proximity sensor test.
Used to confirm screen-off behavior during calls.
*#*#0842#*#*
Vibration and backlight test.
Confirms vibration motor and screen brightness are functional.
*#*#0*#*#*
LCD pixel test mode.
Shows red, green, blue screens to identify pixel issues.
*#*#232331#*#*
Bluetooth test interface.
Checks sending and receiving Bluetooth signals.
*#*#232337#*#*
Displays Bluetooth MAC address.
Sometimes needed when pairing or troubleshooting Bluetooth devices.
*#*#44336#*#*
Displays build time and software version.
Helpful in debugging ROM version mismatches.
*#*#4986*2650468#*#*
Displays PDA, phone, hardware and RF call data.
Used by repair technicians to verify part compatibility.
*#*#19732840#*#*
Enables Test Mode.
Access advanced settings for diagnostics and configuration.
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