List of Android Secret Codes

List of Android Secret Codes
Packet Loop Back Test => *#*#0283#*#*
Reset Factory Data => *#*#7780#*#*
Testing Touch Screen => *#*#2664#*#*
GPS Test => *#*#1472365#*#*
Audio Test => *#*#0289#*#*
Wireless Test => *#*#232339#*#*
Info about your smartphone => *#*#4636#*#*
Enable Test Mode => *#*#19732840#*#*
Info about Touch Screen => *#*#2663#*#*
Field Test => *#*#7262626#*#*
Show Bluetooth device address => *#*#232337#*#*
Camera Update => *#*#34971539#*#*
Shows build time => *#*#44336#*#*
Displays Wi-Fi Mac Address => *#*#232338#*#*
Shows IMEI Number of your smartphone => *#06#
Test Proximity Sensor => *#*#0588#*#*
Google Talk Service Monitoring => *#*#8255#*#*
Test Vibration and Backlight => *#*#0842#*#*
ROM version => *#*#3264#*#*
Test LCD => *#*#0*#*#*
Test Bluetooth => *#*#232331#*#*
FTA Software and Hardware version => *#*#2222#*#*
PDA Phone, RF Call Date, Hardware => *#*#4986*2650468#*#*
Backup Media Files => #*#273283*255*663282*#*#*