Android secret codes

For IMEI Number: *#06#

For RAM Memory version: *#*#3264#*#*

For FTA SW version: *#*#1111#*#*

For FTA HW version: *#*#2222#*#*

For Touchscreen version: *#*#2663#*#*

View Phone Lock Status: *#7465625#

Executes Emergency Dial Screen to unlock PUK
Code: **05**#

Enables Voice Dialing Logging Mode:
*#*#8351#*#*

Disables Voice Dialing Logging Mode:
*#*#8350#*#*
Change behavior of Power button:
*#*#7594#*#*

To test Vibration and Back-light of device:
*#*#0842#*#*

To test Proximity/Distance Sensor:
*#*#0588#*#*

To test Touchscreen: *#*#2663#*#*

For Audio Test: *#*#0289#*#* 
or
*#*#0673#*#*

To launch Service Mode: *#*#197328640#*#*

Hidden Service Menu (Motorola Droid):
##7764726

Field Test: *#*#7262626#*#*

To format the phone: *2767*3855#

To start GTalk Monitoring: *#*#8255#*#*

To get PDA, Phone, H/W and RF Call Date:
*#*#4986*2650468#*#*

Displays Build Time and Change List number:
*#*#44336#*#*

Packet Loopback Test: *#*#0283#*#*

LCD Display Test: *#*#0*#*#*

Enter Service Menu (on New Phones): *#0*#

Diagnostic Configuration: *#9090#

USB Logging Control: *#872564#

System Dump Mode: *#9900#

To test Bluetooth: *#*#232331#*#*

To display Bluetooth Physic Address:
#*#232337#*#

To test secret GPS: *#*#1472365#*#*

To test other GPS: *#*#1575#*#*

To test WiFi/Wireless LAN of phone:
*#*#232339#*#*
 or 
*#*#528#*#*
 or
*#*#526#*#*
To display Wi-Fi MAC Address:
*#*#232338#*#*

To Restore Factory Settings: *#*#7780#*#*

To create Immediate backup of your multimedia
files: *#*#273282*255*663282*#*#*

To display Phone Information: *#*#4636#*#*

To get detailed Camera Information:
*#*#34971539#*#*

For Software & Hardware Information:
*#12580*369#

To display HSDPA/HSUPA Control Menu:
*#301279#