attention: this blog written base on top android site look like Android Hidden Codes 
| *#*#1472365#*#* | For a quick GPS test |
| *#*#1575#*#* | A Different type GPS test |
| *#*#0283#*#* | Packet Loopback test |
| *#*#273283*255*663282*#*#* | For a quick backup to all your media files |
| *#*#197328640#*#* | Enabling test mode for service activity |
| *#*#232339#*#* OR *#*#526#*#* | Wireless Lan Tests |
| *#*#232338#*#* | Displays Wi-Fi Mac-address |
| *#*#4636#*#* | Display information about Phone, Battery and Usage statistics |
| *#*#7780#*#* | Restting your phone to factory state-Only deletes application data and applications |
| *2767*3855# | It’s a complete wiping of your mobile also it reinstalls the phones firmware |
| *#*#34971539#*#* | Shows completes information about the camera |
| *#*#7594#*#* | Changing the power button behavior-Enables direct poweroff once the code enabled |
| *#*#44336#*#* | Displays Build time and change list number |
| *#06# | Displsys IMEI number |
| *#*#8351#*#* | Enables voice dialing logging mode |
| *#*#8350#*#* | Disables voice dialing logging mode |
| ##778 (+call) | Brings up Epst menu |
| *#*#4986*2650468#*#* | PDA, Phone, Hardware, RF Call Date firmware info |
| *#*#1234#*#* | PDA and Phone firmware info |
| *#*#1111#*#* | FTA Software version |
| *#*#2222#*#* | FTA Hardware verion |
| *#*#232331#*#* | Bluetooth test |
| *#*#7262626#*#* | Field test |
| *#*#232337#*# | Displays bluetooth device address |
| *#*#8255#*#* | For Google Talk service monitoring |
| *#*#2663#*#* | Displays touch-screen version |
| *#*#2664#*#* | Touch-Screen test |
| *#*#0588#*#* | Proximity sensor test |
| *#*#3264#*#* | Ram version |
| *#*#0842#*#* | Vibration and Backlight test |
| *#*#0673#*#* OR *#*#0289#*#* | Audio test |