On Android device, navigate to 'Apps' > 'Settings' > 'Security', enable 'Unknown Sources', then tap 'OK' to 👍 agree to enable this setting. This will allow the installation of third party apps and standalone APKs.
The easiest way to install an APK 👍 file on your Android is to download the file using the default browser, Chrome. Find a website offering the Android 👍 app and tap the link to download the APK file. Accept any pop-ups, including This type of file can 👍 harm your device. Only download APK files from reputable sources.