The first thing you need to know is what are the Unknown Sources. Different applications that are not verified by Google which also means that those applications are not trusted.

Android by default only allows installing applications from the Play Store. When you need to install the applications from any other sources apart from Play Store, Android system with default settings does not allow you to do so. There is a need to allow applications from the unknown sources i.e. from any website or you need to test custom applications on the Android.

Enabling ‘Unknown Sources’ will help in installing the applications from different websites which is very simple. There are a few simple steps you can follow to enable Unknown Sources.

Enabling Unknown Sources in Android

  • Open Settings.
  • Now open Security Settings in Android 4.0 or higher or Applications in Android 3.0 or lower.How to Enable Unknown Sources in Android
  • Scroll down to see Unknown Sources and Enable them.Enabling Unknown Sources in Android
  • This will help the users to download and install non-trusted applications


It is also a useful option for the Android Developers to test their applications on the Android Device Directly.


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