Android Secret codes to Secret Menu

If you feel you want to explore to play with some secret menu inside your android phone, then this are the codes to enter to bring up these Secret menus

––> PHONE INFORMATION: *#*#4636#*#*

Below are some important Android USSD codes regarding Wireless Lan Tests, Softwares and Hardwares version:
 *#*#528#*#* ––> Wireless Lan Tests
*#*#232338#*#* ––> Displays Wi-Fi Mac-address
*#*#1472365#*#* ––> For a quick GPS test
**#*#1575#*#* ––> A Different type GPS test
*#*#0283#*#* ––> Packet Loop back test
 *#*#0*#*#* ––> LCD display test
 *#*#0673#*#* OR *#*#0289#*#* ––> Audio test
*#*#0842#*#* ––> Vibration and Backlight test
*#*#2663#*#* ––> Displays touch-screen version
 *#*#2664#*#* ––> Touch-Screen test
 *#*#0588#*#* ––> Proximity Sensor test
 *#*#3264#*#* ––> RAM Version
 *#*#232331#*#* ––> Bluetooth test
*#*#7262626#*#* ––> Field test
 *#*#232337#*#* ––> Displays bluetooth device address
*#*#8255#*#* ––> For Google Talk service monitoring
 *#*#4986*2650468#*#* ––> PDA, Phone, Hardware, RF Call Date firmware info
*#*#1234#*#* ––> PDA and Phone firmware info
 *#*#1111#*#* ––> FTA Software version
*#*#2222#*#* ––> FTA Hardware version
*#*#44336#*#* ––> Displays Build time and change list number
*#06# ––> Displays IMEI number
*#*#8351#*#* ––> Enables voice dialling logging mode
*#*#8350#*#* ––> Disables voice dialling logging mode