How to Allow/Deny App Installations from Unknown sources - Samsung Manual | TechBone

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"Apps from unknown sources" are apps that are not from the Google Play Store or the Samsung Galaxy Store, meaning that if the app is downloaded as an .apk file from a website, it cannot be installed on the Samsung device by default.

Before Android 9, there was a general option to allow or block apps from unknown sources. Now, under One UI, every single app must be allowed to install apps from unknown sources.

Android 11 | One UI 3.0

How to Allow/Deny App Installations from Unknown sources - Tap on Settings

Tap on Settings
Tap on Apps
Open the Menu
Tap on Special access
Tap on Install unknown apps
Choose an App
Enable or disable Allow from this source

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