This report details the existence, functionality, and technical mechanisms behind "secret codes" within the native Samsung Calculator application. Unlike generic Android dialer codes (USSD codes), the Samsung Calculator hosts a specific set of hidden menus designed for Quality Assurance (QA), hardware stress testing, and demonstration purposes. These features are intended for retail floor models and service center technicians but remain accessible to end-users. This report categorizes these codes, explains their utility, and outlines the risks associated with their use.

If nothing happens: Your carrier may have blocked the code, or the code may not be compatible with your specific model (e.g., Galaxy S23 vs. A54 vs. Note 20).

Once you have entered the DRParser Mode, you can use these codes to test specific hardware components: : Opens the General Test Mode

The official Samsung Calculator app hides more than just math. Beyond standard calculations, you can access hidden diagnostic modes and factory testing tools through specific string sequences. The Master Diagnostic Code

This menu is typically used by technicians to test hardware components or verify system configurations without needing to go through the standard settings or dialer codes. Universal Samsung Dialer Codes