Samsung Galaxy J4 - Enable sideload of Apps

Phone: Samsung Galaxy J4
Factory OS: Android 8 (Oreo)
Have you updated your Operating System?
Then view tips for the most recent OS version(s): Android 9 (Pie)
Or view tips for all Android versions
Factory OS: Android 8 (Oreo)
Have you updated your Operating System?
Then view tips for the most recent OS version(s): Android 9 (Pie)
Or view tips for all Android versions
Enable sideload of Apps
If you want to install Apps outside of the Play Store (called sideloading), then go to Settings – Personal – Lock screen and security and select Unknown sources.
This setting will allow you to download Apps onto your device that would normally be blocked in the Play store.
Note: use at your own risk.