Here are the list of secret codes for android phones:
*#*#4636#*#*
Gives Full information like battery status etc
*#*#7780#*#*
Factory Data reset
*#*#7594#*#*
Changes power switch to end the call
*#*#273283*255*663282#*#*
Resets every thung including Frimware so try at your own risk
Test Codes
*#*#23233#*#*
Bluetooth test
*#*#2664#*#*
Touch test
*#*#1472365#*#*
GPS test
#*#*0588#*#*
Proximity test
*#*#3264#*#*
RAM version detail
