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How to Enable "Unknown Sources" in Order to Download Independent Apps on Your Galaxy Note 2 or 3

By Nelson Aguilar

Settings menu showing device administration options and permissions on a smartphone.

Installing applications that are not on Google Play requires you to enable a certain permission in the settings so that the whole process goes down smoothly. If you're downloading one of these third-party applications (in the form of an APK), you'll need to enableUnknown sources.

To do this, follow these steps—

Open Settings on your Note 2 or 3
Go to the General section
Tap on Security
Check the box next to Unknown sources

Settings menu displaying security options on a mobile device.

Security settings screen showing options for device administration and unknown sources on a mobile device.

Settings menu displaying security options on a mobile device.

Security settings screen showing options for device administration and unknown sources on a mobile device.

Once this is done, you should be able to successfully download and install any third-party applications not available on Google Play.

Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check our list of supported iPhone and iPad models, then follow our step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.

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