Codes

The following special numbers can be "dialed" to read out internal data and get access to various debugging functionality:

*#1234# - print the PDA, PHONE and CSC versions of the current firmware (alternatively: *#*#44336#*#*)
*#06# - print the IMEI
*2767*4387264636# - print the product code
*#*#4636#*#* - Phone information, Battery information, Usage statistics, Wifi information (very useful for debugging, has ping test etc.)
*#0*# - testing mode, has tests for LCD, speaker, vibration, front and back camera, touchscreen and all other internal sensors like accelerometer, magnetic sensor etc.
*#*#7594#*#* - switch the action performed when you hold the "Power" button: default is to display a menu (with options like silent mode, flight mode, power off), the other setting is to directly switch phone off
*#*#8255#*#* - GTalk service monitor, for GTalk debugging
*#*#526#*#* - WiFi driver test, use Menu button to select start transmission and receiving tests (alternatively: *#*#232339#*#*)
*#*#232338#*#* - print WiFi MAC address
*#*#1575#*#* - service mode: GPS test
*#0011# - service mode: signal status
*#1111#* - service mode: print FTA SW Version
*#2222#* - service mode: print FTA HW Version
*#*#0283#*#* - service mode: audio packet loopback
*#*#0673#*#* - speaker test (alternatively *#*#0289#*#*)
*#*#0842#*#* - vibration test
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - print Bluetooth device address
*#*#3264#*#* - print RAM version
*#3214789650# - enter AngryGPS configuration

*2767*3855# - Factory format. WARNING! ALL DATA WILL BE DELETED AS SOON AS YOU TYPE IN THE FINAL #! IT DOES NOT ASK FOR CONFIRMATION!
*#*#34971539#*#* - Camera firmware info and update. WARNING! Trying to flash camera firmware will brick your camera!
*#*#2663#*#* - Touch screen firmware version and update

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