SOLDIERX.COM Nobody Can Stop Information Insemination

Android phones aren't supposed to have secret codes godddamnit!!
*WARNING MILEAGE MAY VARY*
**HINT** Some codes translate on the numpad into english. Furthermore not all phones have all the codes etc.
Find more codes and I'll add them here.

*#*#checkin#*#* - Check for updates

*#06# - IMEI number

*#0*# – Enter the service menu on newer phones like Galaxy S III

*#*#4636#*#* – Phone information, usage statistics and battery

*#*#34971539#*#* – Detailed camera information

*#*#273282*255*663282*#*#* – Immediate backup of all media files

*#*#197328640#*#* – Enable test mode for service

*#*#232339#*#* – Wireless LAN tests

*#*#526#*#* – WLAN Test

*#*#0842#*#* – Backlight/vibration test

*#*#2664#*#* – Test the touchscreen

*#12580*369# – Software and hardware info

*#9090# – Diagnostic configuration

*#872564# – USB logging control

*#9900# – System dump mode

*#301279# – HSDPA/HSUPA Control Menu

*#7465625# – View phone lock status

*#*#7780#*#* – Reset the /data partition to factory state

*2767*3855# – Format device to factory state (will delete everything on phone)

##7764726 – Hidden service menu for Motorola Droid

*#*#232338#*#* - Shows WiFi MAC address

*#*#1472365#*#* - GPS test

*#*#1575#*#* - Another GPS test

*#*#232331#*#* - Bluetooth test

*#*#232337#*# - Shows Bluetooth device address

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

*#*#0588#*#* - Proximity sensor test

*#*#3264#*#* - RAM version

Codes to 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

**05***# – Execute from Emergency dial screen to unlock PUK code

Links:
http://www.askvg.com/google-android-hidden-secret-codes/
http://www.redmondpie.com/hidden-android-secret-codes-for-samsung-htc-mo...
http://www.plusdroid.com/Blogandnews/we-spill-the-beans-of-jellybean-and...