> For the complete documentation index, see [llms.txt](https://copy9.gitbook.io/support/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://copy9.gitbook.io/support/guide/agent-app/install-guides/step-2-install-the-apk.md).

# Step 2: Install the APK

Once downloaded:

* Open the APK file.
* Tap **Install**.
* Wait for the installation to complete.
* Tap **Open**.