Tap on Install, and the application will be installed successfully unless there are compatibility issues.In some apps, you’ll automatically be sent back to the installer. Give the permission and, depending on the app from where you’re installing the APK, you may have to tap back to get to the installer. If this is the first time you’re installing an APK from that file manager, the Downloads app, or the web browser, Android will throw a warning and ask your permission to continue. Tap on the file name to start the installation.Or you can use a file manager to navigate to the Downloads folder. The downloaded APKs can be found in the Downloads app. Once the APK has been transferred to your phone, you're ready to install it.