What’s APK/XAPK file and how to install?

APK stands for "Android Application Package," and it's the file format used to distribute and install applications on Android devices. Essentially, an APK file is a package containing all the necessary files and resources needed to install and run an Android app.

Here are the steps to install an APK file:

1. Find the downloaded APK file: Use your device's file manager to locate the downloaded APK file. It's typically found in the "Downloads" folder.
2. Install the APK file: Tap on the APK file to start the installation process. Follow the on-screen instructions to complete the installation.
3. (Optional) Enable installation from unknown sources: By default, Android devices only allow installation of apps from the Google Play Store. To install an APK file, you need to enable installation from unknown sources in your device settings.
4. Open the installed app: Once the installation is complete, the app will appear on your device's app drawer. You can launch the app by tapping on its icon.