> For the complete documentation index, see [llms.txt](https://smartpossdk.gitbook.io/cloudpossdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smartpossdk.gitbook.io/cloudpossdk/faq/certificate/install-ca-certificates.md).

# Install CA Certificates

### For Android 12:

1. Navigate to Settings > Security > Encryption & credentials.
2. Select Install a certificate > CA certificate.
3. Follow the on-screen instructions to complete the installation.

### For Other Android Versions:

1. Save the CA certificate to a TF card.
2. Insert the TF card into the terminal.
3. On the terminal, go to Settings > Security > Install from SD card.
4. Select the CA certificate from the TF card.
5. When prompted, enter a name for the certificate.
6. Set a lock screen PIN if required.
7. A confirmation message will display upon successful installation of the CA certificate.

### Important Notes:

* Third-party apps cannot install a CA certificate on the terminal programmatically without UI interaction for security reasons. Only system APKs have this capability.
* It is crucial to follow these steps to ensure the secure and correct installation of CA certificates.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://smartpossdk.gitbook.io/cloudpossdk/faq/certificate/install-ca-certificates.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.