*#06# To check IMEI of yourdevice, enter this code.
*#0*# To enter service menu on the very new Android phones.
*#0228# To check batterystatus.
*#9090# / *#1111# To make device inService mode.
*#*#4636#*#* To get informationabout battery, usage statistics and device.
*#*#34971539#*#* To get allinformation about camera.
*#12580*369# To get software andhardware info.
*#228# For ADC Reading.
#7353# To hide test menu -Self Test Mode.
##7764726 To hide service menu for Motorola Droid.
*#*#273283*255*663282*#*#* For backup ofour all media files.
*#*#232338#*#* It display the Wi-Fimac address.
*#7465625# To view status of lock-phone.
*#*#3264#*#* To show RAMversion.
*#*#44336#*#* To display build timeand change list number.
*#*#232337#*# To see or display device’s Bluetooth address.
*#*#197328640#*#* It enables testmode for service.
*#*#8351#*#* To enable voice dialmode.
*#*#8350#*#* To disable the voice dial mode.
*#*#0842#*#* To test Back-lightvibration.
*#*#2664#*#* To test the touch-screen.
*#*#0289#*#* For Audio test.
*#*#0*#*#* For LCD display test.
*#*#232331#*#* To test Bluetooth ofany Android device.
*#*#0283#*#* To perform a packetloop-back test.
*#*#1575#*#* For advanced GPS test.
*#*#1472365#*#* To Perform a quickGPS test.
*#*#0588#*#* To perform aproximity sensor test.
*#*#7262626#*#* To perform field test.
*#*#232339#*#* Testing WirelessLAN.
*#9090# To Diagnoseconfiguration of device.
*#872564# To control U-S-B logging.
*#9900# System dump mode.
*#*#7780#*#* Reset to factorystate.
*2767*3855# To format Androiddevice.
*#*#4986*2650468#*#* To get pda, phone,H/W and RF Call Date.
*#*#1234#*#* To know about pdaand firmware version.
*#*#1111#*#* For FTA Softwareversion.
*#*#2222#*#* For FTA Hardwareversion.
*#*#7594#*#* To change powerbutton behaviour once code enabled.
*#*#8255#*#* To launch GoogleTalk service monitor.
ENJOY