Malicious Android software often actively prevents the user from closing it, making it impossible to uninstall.
That's why Google has introduced a special app-closing mechanism in its Android version Nougat (7.1) to protect against such malware, as the developer community "xda developers" reports.
The function prompts an app to close if the user quickly presses the back button repeatedly – even if the malware attempts to prevent it. This allows you to get to the app settings to uninstall the malware.
However, if you hope to benefit from the new security feature, you'll have to make sure that the smartphone manufacturer has actually integrated and activated it in the firmware of the respective model. — dpa