Hidden Android Secret Codes which user must known

We all known that android smart phones are leading the present market with their technology. Now a days most of the people are using android phones for Playing, Chatting and Browsing. At the present situation every house has atleast one android phone because android phones are so cheaper in the market and every app is supported by it but people not know some secret codes of android.

Android Smartphone Secret Codes List:

*#*#I472365#*#* = Quick GPS Test

#’#273283*255*663282*#*#* = Backup Media Files
*#*#0673#*#* OR *#*#0289#*#*  = Audio Test
*#*#778O#*#* = Factory Data Reset
*#*#0283#*#* = Packet Loopback Test
*#*#2664#*#* = Touch Screen Test
*2767*3855# = Reinstalls The Phones Firmware & Format Your Phone
*#*#4636#*#*‘ = Complete Information About your Phone
*#*#4986*2650468#*#* = PDA, Phone. Hardware, RF Call Date
*#*#8255#*#* = Google Talk Service Monitoring
*#*#23233I#‘*#* = bluetooth Test
*#*#0842#*#* Vibration and Backlight Test
*#*#7262626#*#*= Field Test
*#*#19732840#*#* = Enable Test Mode
*#*#34971539#*#* = Camera Update
*#*#0588#*#* = Proximity Sensor Test
*#*#232338#*#* = Wi-Fi Mac Address
*#*# 1234#’#’ = PDA and Phone Firmware Info
*#*#0*#*#*= LCD Display Test
*#*#I I I I#*#*   |  *‘#*#2222#*#* = FTA Software Version FTA | Hardware \/ersion
*#*#3264#*#* = Rom version
*#*#44336#*#* = Displays Build Time
*#06# = Displays IMEI Number
*#*#2663#*#* = Touch Screen Version
*#*#232337#*# = Displays bluetooth Device Addres
*#*#232339#*#* OR *#*#526#*#* = WireIess Lan Test
*#*# 1575#*#* = Different GPS Test