I found this HTC andorid phone Command code on internet and I would like to share it, maybe some command doesn’t work for old HTC phones, It should work on the phones which has a pre-installed Android 2.1 system.
* # * # 4636 # * # *
Display phone information, battery information, battery history, use of statistical data, WiFi Information
* # * # 7780 # * # *
Factory Reset, will not delete the default program or SD card files.
* 2767 * 3855 #
Factory Reset and delete all the files in the SD card.
* # * # 34971539 # * # *
Display camera firmware version, or update the camera firmware
* # * # 7594 # * # * 6
When press the shutdown button, there will be a menu to switch mobile phone models, including: silent mode, flight mode and shut down, you can use the above code, directly turn it into a shutdown button.
* # * # 273 283 * 255 * 663 282 *#*#*
Allows you to open a place to backup the media files, such as photos, sound and video, etc.
* # * # 197328640 # * # *
Start service mode, you can test the phone settings and change it
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here is WLAN, GPS and Bluetooth test code
* # * # 232339 # * # * or * # * # * # * 526 # or * # * # 528 # * # *-WLAN test
* # * # 232338 # * # * - show WiFi MAC Address
* # * # 1472365 # * # * -GPS test
* # * # 1575 # * # * - other GPS test
* # * # 232331 # * # * - Bluetooth test
* # * # 232337 # * # - Display the Bluetooth device address
* # * # 8255 # * # * - Startup GTalk server, display the software version
* # * # 4986 * 2650468 # * # *-PDA, Phone, H / W, RFCallDate
* # * # 1234 # * # *-PDA and Phone
* # * # 1111 # * # *-FTASW version
* # * # 2222 # * # *-FTAHW version
* # * # 44336 # * # *-PDA, Phone, csc, buildTime, anzhi.name, changelistnumber the hardware test
* # * # 0283 # * # *-PacketLoopback
* # * # 0 *#*#*-LCD test
* # * # 0 673 # * # * or * # * # 0289 # * # *-Melody test
* # * # 0842 # * # * - unit testing, such as vibration, light
* # * # 2663 # * # * - touch screen version
* # * # 2664 # * # * - Touch screen test
* # * # 0588 # * # * - Distance sensor test
* # * # 3264 # * # * - memory version