Using these codes, you can enter Samsung engineering mode, test the network, diagnose the hardware and get key information about your Samsung phone to Galaxy Tab.
In this article, I will list all Samsung secret codes that work on the older TouchWiz Nature and Grace UX and the latest One UI. While many of these codes work on all devices, some Android skins like One UI, Color OS, Oxygen OS, MIUI, FunTouch OS, etc. To facilitate system diagnosis and test, it supports a range of hidden codes. Android is a highly customizable and developer-friendly OS.
