*#*#4636#*#* Shows Information about phone, battery and also usage stats.
*#*#7780#*#* Factory Reset your smartphone.
*2767*3855# Hard Reset & Reinstall the Firmware.
*#*#34971539#*#* Displays Information about the camera.
*#*#7594#*#* Changes the power button behaviour.
*#*#273283*255*663282*#*#* Backup all media files stored on your device.
*#*#197328640#*#* This opens the Service Mode
*#*#232339#*#* or *#*#526#*#* Test the state of Wireless LAN
*#*#232338#*#* Display the MAC Address of WiF
*#*#232331#*#* Test the Bluetooth sensor of your device.
*#*#232337#*# This Shows the Bluetooth Device address.
*#*#44336#*#* Display the Build time.
*#*#1234#*#* Displays the PDA and Phone Firmware Info
*#*#0588#*#* Tests the Proximity Sensor
*#*#1472365#*#* This Tests the GPS functionality
*#*#0*#*#* Test the phone’s LCD Display
*#*#0673#*#* or *#*#0289#*#* Test the Audio of your smartphone
*#*#0842#*#* Tests the Vibration and Backlight
*#*#8255#*#* Google Talk Service Monitoring.
*#*#2663#*#* Displays the Touchscreen version.
*#*#2664#*#* Allows you to perform a touch screen test
*#*#3264#*#* Displays RAM information
*#*#1111#*#* Displays the software version.
*#*#2222#*#* Displays the hardware version.
*#06# It Displays the phone’s IMEI number
*#2263# Displays the RF band selection
*#9090# Shows the Diagnostic configuration.
*#7284# This opens the USB 12C mode control.
*#872564# This shows the USB logging control.
*#745# This opens the RIL dump menu.
*#746# This opens the Debug dump menu.
*#9900# Opens the System dump mode.
*#03# NAND flash serial number
*#3214789# This shows the GCF mode Status
*#7353# Opens the Quick test menu
*#0782# This performans a Real-time clock test.
*#0589# This performs Light sensor test.