I read that not to enter those codes in your phones, it can damage it. The code may be used for diagnostic purposes and again could alter or damage the phone ostensibly.
I'm pretty sure this is the diagnostic code for Pixel phones. It can be entered in the phone app. It will take you to hidden diagnostics to test sensors, connectivity, screen, audio/visual, camera, etc. If you want to do this same thing on your Galaxy phone. Open up Samsung members, and you can do all the same diagnostics for your Galaxy.
