Secret Codes for Android Phones

WOW !! I found some interesting secret codes which can enable/disable lots of hidden settings in the mobile phone. Few codes can also show many useful
information about the phone status.
So in this post, you’ll get several
hidden secret codes which can be used in any Android mobile phone’s to access things which are not accessible by default.
Please note: Some codes mentioned here can be dangerous.

DATA & INFORMATION Codes:
*#*#4636#*#* - Phone / Battery / Usage
information
*#*#7780#*#* - factory data reset
*2767*3855# - factory format
*#*#34971539#*#* - information about
phone camera
*#*#7594#*#* - End Call / Power
*#*#273283*255*663282*#*#* - File
copy / backup
*#*#197328640#*#* - 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.

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, Change-list number

CODES TO LAUNCH VARIOUS FACTORY TESTS:
*#*#0283#*#* - Packet Loop-back
*#*#0*#*#* - LCD test
*#*#0673#*#* - Melody test
*#*#0289#*#* - Melody test
*#*#0842#*#* - Device test (Vibration test and Back-light test)
*#*#2663#*#* - Touch screen version
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test
*#*#3264#*#* - RAM version.