# Mobile Device Cache

Mobile Device Cache allows the CDN to generate different cache entries based on the detected device type. This ensures that each device category receives appropriately formatted content without cache conflicts.

The feature also forwards device information to your origin using the **X-DEVICE** and **X-MOBILE** headers.

You can manage Mobile Device Cache in the [Medianova Control Panel](https://cloud.medianova.com)

Log in to the [Medianova Control Panel](https://cloud.medianova.com), select a CDN resource in the CDN section, and navigate to the **Caching** tab.

## Enable Mobile Device Cache

{% stepper %}
{% step %}

#### Enable the Setting

Switch **Mobile Device Cache** to **On** to create separate cached versions for mobile, tablet, and desktop.
{% endstep %}

{% step %}

#### Submit the Configuration

Click **Submit** to apply the updated caching behavior.
{% endstep %}
{% endstepper %}

## **Behaviour**

Mobile Device Cache changes how cache keys are generated and what information is forwarded to the origin.

#### **Device Classification**

The CDN classifies each request using the User-Agent header:

* **mobile**
* **tablet**
* **desktop**

#### **Cache Key Variation**

A unique cache entry is created per device type, for example:

```
/index.html | mobile
/index.html | desktop
```

#### **Forwarded Headers**

<table><thead><tr><th width="154">Header</th><th width="323.0001220703125">Description</th><th>Example</th></tr></thead><tbody><tr><td><strong>X-DEVICE</strong></td><td>Device category detected by the CDN</td><td><code>mobile</code> / <code>tablet</code> / <code>desktop</code></td></tr><tr><td><strong>X-MOBILE</strong></td><td>Whether the device is mobile</td><td><code>true</code> / <code>false</code></td></tr></tbody></table>

These headers allow your origin to serve tailored content if needed.

* Device detection is based on User-Agent parsing and may not be accurate for all custom or rare device signatures.
* The feature does not provide per-resolution caching (e.g., based on screen width).
* Use this feature only if your mobile/tablet/desktop content differs meaningfully.

## **FAQ**

#### **Does Mobile Device Cache change how requests are routed to the origin?**

No. This feature affects only cache segmentation and forwards device headers. Origin routing remains unchanged.

#### **What happens if the CDN cannot identify the device type from the User-Agent?**

The request is classified as **desktop** by default, and the cache key is generated accordingly.

#### **Will enabling this feature create separate cached versions for each device type?**

Yes. Mobile, tablet, and desktop clients each receive their own cached version, preventing cross-device content mismatches.


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