Android Phone Secret Codes

Hi,
I just found a nice list of tricks you can execute on your Android OS!

Some of the codes mentioned might be dangerous, so be careful with this list!

*#*#4636#*#* - Phone / Battery / USage information
*#*#7780#*#* - factory data reset*2767*3855# - factory format*#*#34971539#*#* - information about phone camera*#*#7594#*#* - End Call / Power*#*#273283*255*663282*#*#* - File copy / backup*#*#197328640#*#* - Service mode.

WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use "Menu" button to start various tests)*#*#232338#*#* - Shows WiFi MAC address*#*#1472365#*#* - GPS test*#*#1575#*#* - Another GPS test*#*#232331#*#* - Bluetooth test*#*#232337#*# - Shows Bluetooth device address*#*#8255#*#* - This code can be used to launch GTalk Service Monitor.

GET FIRMWARE VERSION INFORMATION:
*#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate*#*#1234#*#* - PDA and Phone*#*#1111#*#* - FTA SW Version*#*#2222#*#* - FTA HW Version*#*#44336#*#* - PDA, Phone, CSC, Build Time, Changelist number

CODES TO LAUNCH VARIOUS FACTORY TESTS:
*#*#0283#*#* - Packet Loopback*#*#0*#*#* - LCD test*#*#0673#*#* OR *#*#0289#*#* - Melody test*#*#0842#*#* - Device test (Vibration test and BackLight test)*#*#2663#*#* - Touch screen version*#*#2664#*#* - Touch screen test*#*#0588#*#* - Proximity sensor test*#*#3264#*#* - RAM version

Have fun with these secrets codes .....:)