Secret Codes is an application that allows you to scan the secret codes available on your device through the dialer app. The application will scan through all available secret codes on your device. Then you will be able to executes these secret codes and discover hidden functionalities. In Android a secret code is defined by this pattern: *#*#code#*#*. There are multiple ways to execute a secret code; The simplest is to directly write the secret code through the dialer application of your device.