How to modify unknown application installation permissions

How to modify the installation permissions of unknown applications?

First open the main page of the mobile phone, turn the page to find the "Settings" page, and click "Settings" to enter the new interface and proceed to the next step.

After entering the "Settings" interface, scroll down, find "Applications" and click it. Enter the new interface before proceeding to the next step.

After entering the "Application" setting interface, click the third option "Permission Management" above. After entering the new interface, select the application that needs to modify permissions and click it.

After clicking the application, click "Install other applications within the application", then enter the permission setting interface, select "Prohibit" below, and you are done.

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