How to Download & Install Apk?
1. What is .APK File?
Android Package (APK) is the package file format used by the Android operating system for the distribution and installation of mobile apps and middleware.
APK files are a type of archive file, specifically in zip format-type packages, based on the JAR file format, with .apk as the filename extension.
Allow installing third-party apps on your device
If you want to install the game or application through the APK, you must make sure the phone is allowed to install third-party apps. Do this by going to Settings » Additional Information » Privacy » Turn on Unknown sources