Important Codes for Smart Phones

Smartphone manufacturers tend to keep the technical stuff away from the common users. They don’t want to confuse or overburden normal people with a bucket load of options. Thankfully, both Android OS developers and smartphone manufacturers tend to keep hidden menus accessible via dialer codes.
There are some codes that are universal and are supported by almost any Android smartphone.Some of the dialer codes are exclusive to manufacturers. I’ll be listing them all in separate sections, so if you want to get codes that work on Android devices, you can just get over to that section and start having fun.
*#*#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
Menus might differ for different mobile phones. Check out following video which shows the above code in action:
*#*#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
It'll NOT remove:
  • Current system software and bundled applications
  • SD card files e.g. photos, music files, etc.
PS: Once you give this code, you get a prompt screen asking you to click on "Reset phone" button. So you get a chance to cancel your operation.
*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.
PS: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.
*#*#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#*#* or *#*#32489#*#* or *#*#0011#*#*
This code can be used to enter into Service mode. You can run various tests and change settings in the service mode.


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.


Codes to get Firmware version information:
*#*#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
*#*#12580*369#*#* - Check software and hardware information
*#*#0228#*#* - Check battery status
*2767*4387264636# - Display product code
*#*#7465625#*#* - Check phone lock status
*#*#272886#*#* - Change automatic answer selection


Codes to launch various Factory Tests:
*#*#0283#*#* - Packet Loopback
*#*#0*#*#* - LCD test
*#*#0673#*#* OR *#*#0289#*#* - Melody test
*#*#0842#*#* - Device test (Vibration test and BackLight test)
*#*#0589#*#* - Light censor test
*#*#0782#*#* - Real time clock 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 phones.
NOTE: If some codes don't work on your mobile phone, try to use only *# in the start of the code and only #* or only # at the end of the secret code. For example*#4636#* or *#4636#

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