It is only available in test mode and allows emergency stop applications.
Users of devices with the latest Android operating system 7.1 has found a hidden “panic” button.
This mode can be activated by a fourfold pressing the back button. After the application stops, the user is redirected to home screen.
The developers note that currently only tested compa. Only available to a number of Android users is 7.1. You can check this in the file config.xml in SystemUI APK.
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