Is it possible to revert to the state before displaying the developer options? --Why Android that I can't ask anymore

You can select your favorite device from a wide variety of candidates and customize it to a high degree, which is the appeal and strength of Android. However, on the other hand, it is often pointed out that it is difficult to understand. In this section, we will explain such "I don't understand here on Android" in an easy-to-understand manner. This time, I'll answer the question, "Can I revert to the state before the developer options were displayed?"

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The Android OS has a screen called "Developer Options" that collects the setting items required by some users such as application developers. Since Android 4.2, it is no longer displayed at the factory shipment stage, but it will appear when you open the screen in the order of "About device" → "Software information" in the "Settings" app and tap the "Build number" item a total of 7 times.

It's a developer option, but there is no official way to turn it off. You can return the device of a certain manufacturer to the state where it is not displayed by deleting the data of the "Settings" app (open the app information screen of "Settings" in "Settings" → "Apps"), but some devices cannot use this method. Exists. Fortunately, even if you can hide the developer options by erasing the data in the "Settings" app, the settings will remain as they are, so you need to manually restore them to their original state before hiding.

Devices with specifications that cannot erase the developer options cannot rely on the above method, so you must perform the Android OS reset after creating the backup, initialize it, and then restore it from the backup. It's a hassle, but it allows you to revert to the state before you displayed the developer options.

To the extent of the information I have collected, Sony Mobile Communications' Xperia series and Fujitsu's arrows series were able to turn off the developer options by clearing the data in the "Settings" app. On the other hand, Google's Nexus, Samsung, and LG devices could not erase the data in the "Settings" app, and as a result, could not erase the developer options. However, since it is a function for which no official procedure has been set, you will have to try it and think about countermeasures.