Secret Codes

Any device with Android OS support several secret codes.
When those codes are typed manually from the phone dialer, they unlock a hidden menus with more options and information for your device. Now is not necessary to remember all those codes, they are just one finger tap away from you! Enjoy and have a fun!
*** IMPORTANT! Some manufacturers not allow the use of these codes and they may not work on your device. By using secret codes you can change some of your device settings. Use at your own risk!

DISCLAIMER: This information is intended for experienced users. It is not intended for basic users, hackers, or mobile thieves. Please do not try any of following methods if you are not familiar with mobile phones. We'll not be responsible for the use or misuse of this information, including loss of data or hardware damage. So use it at your own risk.

Thank you for your appreciation!

Includes Android (default), Samsung, HTC, Sony Ericsson, Motorola, LG manufacturers products.
There are code sections for testing:
Firmware version
WLAN, GPS and Bluetooth Test
Launch various Factory Tests and etc.

There are codes for testing:
For IMEI Number
For RAM Memory version
For FTA SW version
For FTA HW version
For Touchscreen version
To test Bluetooth
To display Bluetooth Physic Address
To test secret GPS
To test other GPS
To test WiFi/Wireless LAN of phone
To display Wi-Fi MAC Address
To test Vibration and Back-light of device
To test Proximity/Distance Sensor
To test Touchscreen
For Audio Test
To launch Service Mode
Hidden Service Menu (Motorola Droid)
Field Test
To format the phone
To Restore Factory Settings
To create Immediate backup of your multimedia files
To display Phone Information
To get detailed Camera Information
For Software & Hardware Information
To display HSDPA/HSUPA Control Menu
To start GTalk Monitoring
To get PDA, Phone, H/W and RF Call Date
Displays Build Time and Change List number
Packet Loopback Test
LCD Display Test
Enter Service Menu (on New Phones)
Diagnostic Configuration
USB Logging Control
System Dump Mode
View Phone Lock Status
Executes Emergency Dial Screen to unlock PUK Code
Enables Voice Dialing Logging Mode
Disables Voice Dialing Logging Mode
Change behavior of Power button and etc.

If some codes does not work, do not worry about that & do not give 1 start :)