Secret Codes of Samsung application include the secret codes general android and Samsung codes You have to click on copy button code automatically copied and paste it on dialer by longpress. Secret Codes of Samsung for mobile contains common android secret codes include Network GPS Hard reset any device Password recover Password forgotten Software & WH info auto answer selection RF Band Selection Camera Pixels WLAN Mac Address Display CSS Code Bluetooth WLAN test Firmware version information factory tests PDA display the IMEI number Super Mode Service Menu Check Update Reset Device Unlock the device Recover Forgotten pattern Engineering mode GPS test mode Machine information Software Information Hardware Information Test Photograph RGB and much more. 
WARNING! Some manufacturers not allow the use of these secret codes and they may not work on your device. Before using this code keep back up of your data to made it secure. This information is intended for experienced users. It is not intended for basic users hackers or mobile thieves. We are not responsible for the use or misuse of this information including loss of data or hardware damage. So use it at your own risk.

Note: It is not official app of Samsung.