#18 Android Hidden Codes

 *#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
 *#*#0842#*#* – Backlight/vibration test
 *#*#2664#*#* – Test the touchscreen
 *#*#1111#*#* – FTA software version (1234 in the same code will give PDA and firmware version)
 *#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