Android Secret Codes

Just open the dialer of your Smartphone and type the secret code of which ever function you need to use.

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

For IMEI Number: *#06# 

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

Diagnostic Configuration: *#9090#

USB Logging Control: *#872564#

Hidden Service Menu (Motorola Droid): ##7764726

View Phone Lock Status: *#7465625#

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

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

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

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

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

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

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

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

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

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

To format the phone: *2767*3855#

To test Touch screen: *#*#2663#*#*

For Touch screen version: *#*#2663#*#*

To test Wi-Fi/Wireless LAN of phone: *#*#232339#*#* or *#*#528#*#* or *#*#526#*#*

To display Wi-Fi MAC Address: *#*#232338#*#*

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

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

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

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

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

LCD  Display Test: *#*#0*#*#*

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

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

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

Change behavior of Power button: *#*#7594#*#*

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

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

To test other GPS:  *#*#1575#*#*

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

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

Disables Voice Dialing Logging Mode: *#*#8350#*#*

System Dump Mode: *#9900#

some codes may not work on your device because Some manufacturers do not allow the use of such codes.