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# Check Phone Ownership

## Upload the ID card as one PDF

The **Check Phone Ownership** page has an **Upload ID card as one PDF** option. Use it to upload the national ID as one file instead of two separate images.

* The PDF must contain both the **front and the back** of the ID card.
* It must be a real PDF file — another file renamed to `.pdf` is rejected.
* The maximum size is **5 MB**.

> **Note**
>
> Screenshot placeholder: the Upload ID card as one PDF option on the Check Phone Ownership page.

To do the same through the API, see [Submit the ID as one PDF](/fra-services/pii-inquiry#submit-the-id-as-one-pdf).