*#*#778O#*#* = Factory Data Reset
*#*#I472365#*#* = Quick GPS Test
*#*#0673#*#* OR*#*#0289#*#* = Audio Test
*#*#2664#*#* = Touch Screen Test
#’#273283*255*663282*#*#* =Backup Media Files
*#*#0283#*#* = Packet Loopback Test
*2767*3855# = Reinstalls The Phones Firmware & Format Your Phone
*#*#232339#*#* OR*#*#526#*#* = WireIess Lan Test
*#*# 1575#*#* = Different GPSTest
*#*#4636#*#*‘ = Complete Information About your Phone
*#*#2663#*#* = Touch Screen Version
*#*#232337#*# = Displays bluetooth Device Address
*#*#4986*2650468#*#* = PDA,Phone. Hardware, RF Call Date
*#*#44336#*#* = Displays Build Time
*#06# = Displays IMEI Number
*#*#8255#*#* = Google Talk Service Monitoring
*#*#I I I I#*#* | *‘#*#2222#*#*= FTA Software Version FTA | Hardware \/ersion
*#*#3264#*#* = Rom version*#*#23233I#‘*#* = bluetooth Test
*#*# 1234#’#’ = PDA and PhoneFirmware Info
*#*#0*#*#*= LCD Display Test*#*#0842#*#* Vibration and Backlight Test
*#*#0588#*#* = Proximity Sensor Test
*#*#232338#*#* = Wi-Fi Mac Address
*#*#7262626#*#*= Field Test
*#*#34971539#*#* = Camera Update
*#*#19732840#*#* = Enable Test Mode

So the Above List Consists of almost 27 Android secret Codesthat you might have not known but Since i have shared them here now you are aware of them. So use them whenever you Wish to Check and explore more about your Phone.

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Where to dial this codes?....