Android secret codes...!
All android secrect and most usefull codes
*#*#4636#*#* This code can be used to get some interesting information about your phone and battery. It shows following 5 menus on screen: Phone information Battery information Battery history Usage statistics Wifi information

*#*#7780#*#* This code can be used for a factory data reset. It'll remove following things: Google account settings stored in your phone System and application data and settings Downloaded applications

*2767*3855# Think before you give this code. This code is used for factory format. It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.

*#*#34971539#*#* This code is used to get information about phone camera. It shows following 4 menus: Update camera firmware in image (Don't try this option) Update camera firmware in SD card Get camera firmware version Get firmware update count WARNING: Never use the first option otherwise your phone camera will stop working and you'll need to take your phone to service center to reinstall camera firmware.

*#*#7594#*#* This one is my favorite one. This code can be used to change the "End Call / Power" button action in your phone. Be default, if you long press the button, it shows a screen asking you to select any option from Silent mode, Airplane mode and Power off. You can change this action using this code. You can enable direct power off on this button so you don't need to waste your time in selecting the option.

*#*#273283*255*663282*#*#* This code opens a File copy screen where you can backup your media files e.g. Images, Sound, Video and Voice memo.

*#*#197328640#*#* This code can be used to enter into Service mode. You can run various tests and change settings in the service mode. REHAN 21 Aug 2013 в 22:31 WLAN, GPS and Bluetooth Test Codes:

*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* -WLAN test (Use "Menu" button to start various tests)

*#*#232338#*#* - Shows WiFi MAC address

*#*#1472365#*#* - GPS test

*#*#1575#*#* - Another GPS test

*#*#232331#*#* - Bluetooth test

*#*#232337#*# - Shows Bluetooth device address

#8255#*#*

This code can be used to launch GTalk Service Monitor. *#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate

*#*#1234#*#* - PDA and Phone

*#*#1111#*#* - FTA SW Version

*#*#2222#*#* - FTA HW Version

*#*#44336#*#* - PDA, Phone, CSC, Build Time, Changelist number  *#*#0283#*#* - Packet Loopback

*#*#0*#*#* - LCD test

*#*#0673#*#* OR *#*#0289#*#* - Melody test

*#*#0842#*#* - Device test (Vibration test and BackLight test)

*#*#2663#*#* - Touch screen version

*#*#2664#*#* - Touch screen test

*#*#0588#*#* - Proximity sensor test

*#*#3264#*#* - RAM version

NOTE: All above codes have been checked on Google Android phone Samsung Galaxy I7500 only but they should also work in other Google Android phones.For IMEI Number: *#06# For RAM Memory version: *#*#3264#*#* For FTA SW version: *#*#1111#*#* For FTA HW version: *#*#2222#*#* For Touchscreen version: *#*#2663#*#* To test Bluetooth: *#*#232331#*#* To display Bluetooth Physic Address: #*#232337#*# To test secret GPS: *#*#1472365#*#* To test other GPS: *#*#1575#*#* To test WiFi/Wireless LAN of phone: *#*#232339#*#* or *#*#528#*#* or *#*#526#*#* To display Wi-Fi MAC Address: *#*#232338#*#* To test Vibration and Back-light of device: *#*#0842#*#* To test Proximity/Distance Sensor: *#*#0588#*#* To test Touchscreen: *#*#2663#*#* For Audio Test: *#*#0289#*#* or *#*#0673#*#* To launch Service Mode: *#*#197328640#*#* Hidden Service Menu (Motorola Droid): ##7764726 Field Test: *#*#7262626#*#* To format the phone: *2767*3855# To Restore Factory Settings: *#*#7780#*#* To create Immediate backup of your multimedia files: *#*#273282*255*663282*#*#* To display Phone Information: *#*#4636#*#* To get detailed Camera Information: *#*#34971539#*#* For Software & Hardware Information: *#12580*369# To display HSDPA/HSUPA Control Menu: *#301279# To start GTalk Monitoring: *#*#8255#*#* To get PDA, Phone, H/W and RF Call Date: *#*#4986*2650468#*#* Displays Build Time and Change List number: *#*#44336#*#* Packet Loopback Test: *#*#0283#*#* LCD Display Test: *#*#0*#*#* Enter Service Menu (on New Phones): *#0*# Diagnostic Configuration: *#9090# USB Logging Control: *#872564# System Dump Mode: *#9900# View Phone Lock Status: *#7465625# Executes Emergency Dial Screen to unlock PUK Code: **05**# Enables Voice Dialing Logging Mode: *#*#8351#*#* Disables Voice Dialing Logging Mode: *#*#8350#*#* Change behavior of Power button: *#*#7594#*#*