Go to your device Settings > Security (or Apps & Notifications) and toggle on "Install unknown apps" for your browser or file manager.

Because this file is often distributed outside the official Google Play Store, it requires "Sideloading." Follow these steps to install it safely:

The cursor blinked once, twice. Then the response typed itself out, character by character.

The Ks99 application is a social and entertainment platform often used for: