> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/support-us/verifone-hq/device-management/device-profile.md).

# Device Profile

This section discusses the device profile tab in VHQ.

<details>

<summary>Keywords</summary>

Also called: device profile screen, device information. Search terms: communication history, heartbeat history, contact screen.

</details>

## What is a Device Profile?

A device profile comprises the set of attributes associated with a particular device — device ID, model name, device details, communication history, downloads, change history, and more. It's updated:

* Once every 24 hours during the device's maintenance window.
* Each time a device is rebooted.
* When the VHQ Agent on a device registers with the VHQ server and exchanges keys.
* When you select the **Get Device Profile** diagnostic action, under **Device Management** > **Device Profile** > **Schedule Diagnostic Action**.

*Device Profile* provides a complete set of device information collected directly from the device on a periodic basis.

{% hint style="info" %}
If the device model is Carbon, device information for both the payment device and tablet is displayed on the *Device Profile* screen. If the model is Stand, only that device's information is displayed.
{% endhint %}

<figure><img src="https://600591075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHUGEtJbVPg5OkUtYCm8j%2Fuploads%2FFR8gabIqtR2YlPHNenXK%2Fimage.png?alt=media&#x26;token=6b229715-ffff-4e25-9ed6-2e27123f5dc5" alt="Device Profile screen"><figcaption></figcaption></figure>

## Field reference

| Field Name                 | Description                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| -------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Model                      | Device model.                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Serial Number              | Device serial number. Both the tablet and payment device use the same serial number.                                                                                                                                                                                                                                                                                                                                                                  |
| Device ID                  | The device ID.                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Reference Set Name         | Reference set assigned to the device.                                                                                                                                                                                                                                                                                                                                                                                                                 |
| VeriShield Encryption      | VeriShield Encryption certificates sent by the VHQ Agent.                                                                                                                                                                                                                                                                                                                                                                                             |
| Time Zone                  | Device time zone. A *Time zone* parameter supports the *Clock Sync Operation*, performed by the SetClockParams under the TerminalAction ActionType. The VHQ server sends a time request in Linux format as part of the Terminal Management plan. Sync happens during the first KEM, the first MHB, device reboot, and device re-registration — the device acknowledges the Set Clock action as Success or Failure. Supported on VOS, VOS2, and Verix. |
| Hierarchy                  | Device hierarchy.                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Flash Available            | Available flash memory. Carbon devices show flash information for both payment device and tablet.                                                                                                                                                                                                                                                                                                                                                     |
| Device Profile Updated     | Date and time the device profile was last updated.                                                                                                                                                                                                                                                                                                                                                                                                    |
| Diagnostic Profile Updated | Date and time the device diagnostic profile was last updated.                                                                                                                                                                                                                                                                                                                                                                                         |
| Last HeartBeat Received    | Date and time the server last received a heartbeat from the device.                                                                                                                                                                                                                                                                                                                                                                                   |
| RAM Available              | Available RAM. Carbon devices show RAM information for both payment device and tablet.                                                                                                                                                                                                                                                                                                                                                                |
| Edit Hierarchy             | Edits the device's hierarchy.                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Edit Groups                | Edits the device's groups.                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Refresh Data               | Refreshes the displayed data.                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Delete Device              | Deletes the device.                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| Blacklist Device           | Blacklists the device.                                                                                                                                                                                                                                                                                                                                                                                                                                |

## Related feature notes

The **Serial Number** field in *Device Profile* > *Communication History* > *History* has been replaced by the **Payload** field, visible only to support users. Go to **Device Search** > **Communication History** > **History** to view it.

<figure><img src="https://600591075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHUGEtJbVPg5OkUtYCm8j%2Fuploads%2FxO72fccHxxKthckSfrcI%2Fimage.png?alt=media&#x26;token=f8ea38c6-316e-408d-8ee7-a3cf6c68db6c" alt="Communication History Payload field"><figcaption></figcaption></figure>

<figure><img src="https://600591075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHUGEtJbVPg5OkUtYCm8j%2Fuploads%2FtREx22E4iRjE67wIQcOm%2Fimage.png?alt=media&#x26;token=9370814a-bdde-4b46-a251-e577f80050f1" alt="Communication History screen"><figcaption></figcaption></figure>

The **Contact** screen now shows a graphical representation instead of a data grid. Go to **Device Search** > **Communication History** > **Contact** to view it.

<figure><img src="https://600591075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHUGEtJbVPg5OkUtYCm8j%2Fuploads%2FoEjb5tI1Np2ngSMvt7ZA%2Fimage.png?alt=media&#x26;token=bb112296-ad8a-4e80-a88d-2bdd66ddf568" alt="Contact screen"><figcaption></figcaption></figure>

The *Heartbeat History* screen displays when you click the bar graph.

<figure><img src="https://600591075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHUGEtJbVPg5OkUtYCm8j%2Fuploads%2FCVRNZAUHmWdEsOdNovU4%2Fimage.png?alt=media&#x26;token=e4814533-8d44-4c2f-8be4-909e45c6eb38" alt="Heartbeat History screen"><figcaption></figcaption></figure>

## Device Profile Overview Demo

{% hint style="info" %}
View the video below for an overview of the Device Profile in VHQ. See the VHQ Demo Videos section for more videos.
{% endhint %}

{% embed url="<https://vimeo.com/1124919998?fe=cm&fl=pl>" %}

## Related topics

* [Actions](/support-us/verifone-hq/device-management/device-profile/actions.md)
* [Device status evaluation for Carbon devices](/support-us/verifone-hq/device-management/device-profile/device-status-evaluation-for-carbon-devices.md)
* [Connected device](/support-us/verifone-hq/device-management/device-profile/connected-device.md)


---

# 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, and the optional `goal` query parameter:

```
GET https://docs.verifone.com/support-us/verifone-hq/device-management/device-profile.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.