On newer Android versions (8+), you have to allow the specific app from which the install is launched (browser, file manager, third party store, ...). In practi

On newer Android versions (8+), you have to allow the specific app from which the install is launched (browser, file manager, third party store, ...). In practice, not that different. https://developer.android.com/distribute/marketing-tools/alternative-distribution#unknown-sources https://developer.android.com/distribute/marketing-tools/alt...