APK documents work likewise as EXE records. On the off chance that you own a Windows PC, you will be comfortable with EXE (Executable) documents. As a rule, it's utilized to dispatch the installer of a product. The APK document works a similar way. At the point when you need to introduce programming on an Android gadget, you dispatch the APK document by means of a record program. Obviously, ensure that you empower UNKNOWN SOURCES in your settings.